722 lines
31 KiB
C
722 lines
31 KiB
C
/*
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* The MIT License (MIT)
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*
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* Copyright (c) 2021 Rafael Silva (@perigoso)
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* Copyright (c) 2021 Ha Thach (tinyusb.org)
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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* This file is part of the TinyUSB stack.
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*/
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#include "../board.h"
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#include "em_device.h"
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/*--------------------------------------------------------------------*/
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/* MACRO TYPEDEF CONSTANT ENUM */
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/*--------------------------------------------------------------------*/
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#define LED_PORT 0 // A
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#define LED_PIN_R 12 // 12
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#define LED_PIN_B 13 // 13
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#define LED_PIN_G 14 // 14
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#define LED_STATE_ON 0 // active-low
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#define BUTTON_PORT 3 // D
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#define BUTTON_PIN 5 // 5
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#define BUTTON_STATE_ACTIVE 0 // active-low
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/*--------------------------------------------------------------------*/
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/* Forward USB interrupt events to TinyUSB IRQ Handler */
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/*--------------------------------------------------------------------*/
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void USB_IRQHandler(void)
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{
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tud_int_handler(0);
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}
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/*--------------------------------------------------------------------*/
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/* Fault Handlers */
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/*--------------------------------------------------------------------*/
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void HardFault_Handler(void)
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{
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asm("bkpt");
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}
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void MemManage_Handler(void)
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{
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asm("bkpt");
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}
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void BusFault_Handler(void)
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{
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asm("bkpt");
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}
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void UsageFault_Handler(void)
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{
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asm("bkpt");
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}
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/*--------------------------------------------------------------------*/
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/* Startup */
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/*--------------------------------------------------------------------*/
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// Required by __libc_init_array in startup code if we are compiling using
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// -nostdlib/-nostartfiles.
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void _init(void)
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{
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}
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/*--------------------------------------------------------------------*/
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/* Initing Funcs */
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/*--------------------------------------------------------------------*/
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void emu_init(uint8_t immediate_switch)
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{
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EMU->PWRCTRL = (immediate_switch ? EMU_PWRCTRL_IMMEDIATEPWRSWITCH : 0) | EMU_PWRCTRL_REGPWRSEL_DVDD | EMU_PWRCTRL_ANASW_AVDD;
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}
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void emu_reg_init(float target_voltage)
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{
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if(target_voltage < 2300.f || target_voltage >= 3800.f)
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return;
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uint8_t level = ((target_voltage - 2300.f) / 100.f);
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EMU->R5VCTRL = EMU_R5VCTRL_INPUTMODE_AUTO;
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EMU->R5VOUTLEVEL = level; /* Reg output to 3.3V*/
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}
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void emu_dcdc_init(float target_voltage, float max_ln_current, float max_lp_current, float max_reverse_current)
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{
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if(target_voltage < 1800.f || target_voltage >= 3000.f)
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return;
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if(max_ln_current <= 0.f || max_ln_current > 200.f)
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return;
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if(max_lp_current <= 0.f || max_lp_current > 10000.f)
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return;
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if(max_reverse_current < 0.f || max_reverse_current > 160.f)
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return;
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// Low Power & Low Noise current limit
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uint8_t lp_bias = 0;
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if(max_lp_current < 75.f)
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lp_bias = 0;
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else if(max_lp_current < 500.f)
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lp_bias = 1;
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else if(max_lp_current < 2500.f)
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lp_bias = 2;
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else
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lp_bias = 3;
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EMU->DCDCMISCCTRL = (EMU->DCDCMISCCTRL & ~_EMU_DCDCMISCCTRL_LPCMPBIASEM234H_MASK) | ((uint32_t)lp_bias << _EMU_DCDCMISCCTRL_LPCMPBIASEM234H_SHIFT);
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EMU->DCDCMISCCTRL |= EMU_DCDCMISCCTRL_LNFORCECCM; // Force CCM to prevent reverse current
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EMU->DCDCLPCTRL |= EMU_DCDCLPCTRL_LPVREFDUTYEN; // Enable duty cycling of the bias for LP mode
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EMU->DCDCLNFREQCTRL = (EMU->DCDCLNFREQCTRL & ~_EMU_DCDCLNFREQCTRL_RCOBAND_MASK) | 4; // Set RCO Band to 7MHz
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uint8_t fet_count = 0;
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if(max_ln_current < 20.f)
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fet_count = 4;
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else if(max_ln_current >= 20.f && max_ln_current < 40.f)
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fet_count = 8;
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else
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fet_count = 16;
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EMU->DCDCMISCCTRL = (EMU->DCDCMISCCTRL & ~_EMU_DCDCMISCCTRL_NFETCNT_MASK) | ((uint32_t)(fet_count - 1) << _EMU_DCDCMISCCTRL_NFETCNT_SHIFT);
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EMU->DCDCMISCCTRL = (EMU->DCDCMISCCTRL & ~_EMU_DCDCMISCCTRL_PFETCNT_MASK) | ((uint32_t)(fet_count - 1) << _EMU_DCDCMISCCTRL_PFETCNT_SHIFT);
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uint8_t ln_current_limit = (((max_ln_current + 40.f) * 1.5f) / (5.f * fet_count)) - 1;
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uint8_t lp_current_limit = 1; // Recommended value
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EMU->DCDCMISCCTRL = (EMU->DCDCMISCCTRL & ~(_EMU_DCDCMISCCTRL_LNCLIMILIMSEL_MASK | _EMU_DCDCMISCCTRL_LPCLIMILIMSEL_MASK)) | ((uint32_t)ln_current_limit << _EMU_DCDCMISCCTRL_LNCLIMILIMSEL_SHIFT) | ((uint32_t)lp_current_limit << _EMU_DCDCMISCCTRL_LPCLIMILIMSEL_SHIFT);
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uint8_t z_det_limit = ((max_reverse_current + 40.f) * 1.5f) / (2.5f * fet_count);
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EMU->DCDCZDETCTRL = (EMU->DCDCZDETCTRL & ~_EMU_DCDCZDETCTRL_ZDETILIMSEL_MASK) | ((uint32_t)z_det_limit << _EMU_DCDCZDETCTRL_ZDETILIMSEL_SHIFT);
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EMU->DCDCCLIMCTRL |= EMU_DCDCCLIMCTRL_BYPLIMEN; // Enable bypass current limiter to prevent overcurrent when switching modes
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// Output Voltage
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if(target_voltage > 1800.f)
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{
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float max_vout = 3000.f;
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float min_vout = 1800.f;
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float diff_vout = max_vout - min_vout;
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uint8_t ln_vref_high = (DEVINFO->DCDCLNVCTRL0 & _DEVINFO_DCDCLNVCTRL0_3V0LNATT1_MASK) >> _DEVINFO_DCDCLNVCTRL0_3V0LNATT1_SHIFT;
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uint8_t ln_vref_low = (DEVINFO->DCDCLNVCTRL0 & _DEVINFO_DCDCLNVCTRL0_1V8LNATT1_MASK) >> _DEVINFO_DCDCLNVCTRL0_1V8LNATT1_SHIFT;
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uint8_t ln_vref = ((target_voltage - min_vout) * (float)(ln_vref_high - ln_vref_low)) / diff_vout;
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ln_vref += ln_vref_low;
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EMU->DCDCLNVCTRL = (ln_vref << _EMU_DCDCLNVCTRL_LNVREF_SHIFT) | EMU_DCDCLNVCTRL_LNATT;
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uint8_t lp_vref_low = 0;
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uint8_t lp_vref_high = 0;
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switch(lp_bias)
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{
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case 0:
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{
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lp_vref_high = (DEVINFO->DCDCLPVCTRL2 & _DEVINFO_DCDCLPVCTRL2_3V0LPATT1LPCMPBIAS0_MASK) >> _DEVINFO_DCDCLPVCTRL2_3V0LPATT1LPCMPBIAS0_SHIFT;
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lp_vref_low = (DEVINFO->DCDCLPVCTRL2 & _DEVINFO_DCDCLPVCTRL2_1V8LPATT1LPCMPBIAS0_MASK) >> _DEVINFO_DCDCLPVCTRL2_1V8LPATT1LPCMPBIAS0_SHIFT;
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}
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break;
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case 1:
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{
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lp_vref_high = (DEVINFO->DCDCLPVCTRL2 & _DEVINFO_DCDCLPVCTRL2_3V0LPATT1LPCMPBIAS1_MASK) >> _DEVINFO_DCDCLPVCTRL2_3V0LPATT1LPCMPBIAS1_SHIFT;
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lp_vref_low = (DEVINFO->DCDCLPVCTRL2 & _DEVINFO_DCDCLPVCTRL2_1V8LPATT1LPCMPBIAS1_MASK) >> _DEVINFO_DCDCLPVCTRL2_1V8LPATT1LPCMPBIAS1_SHIFT;
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}
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break;
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case 2:
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{
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lp_vref_high = (DEVINFO->DCDCLPVCTRL3 & _DEVINFO_DCDCLPVCTRL3_3V0LPATT1LPCMPBIAS2_MASK) >> _DEVINFO_DCDCLPVCTRL3_3V0LPATT1LPCMPBIAS2_SHIFT;
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lp_vref_low = (DEVINFO->DCDCLPVCTRL3 & _DEVINFO_DCDCLPVCTRL3_1V8LPATT1LPCMPBIAS2_MASK) >> _DEVINFO_DCDCLPVCTRL3_1V8LPATT1LPCMPBIAS2_SHIFT;
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}
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break;
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case 3:
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{
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lp_vref_high = (DEVINFO->DCDCLPVCTRL3 & _DEVINFO_DCDCLPVCTRL3_3V0LPATT1LPCMPBIAS3_MASK) >> _DEVINFO_DCDCLPVCTRL3_3V0LPATT1LPCMPBIAS3_SHIFT;
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lp_vref_low = (DEVINFO->DCDCLPVCTRL3 & _DEVINFO_DCDCLPVCTRL3_1V8LPATT1LPCMPBIAS3_MASK) >> _DEVINFO_DCDCLPVCTRL3_1V8LPATT1LPCMPBIAS3_SHIFT;
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}
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break;
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}
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uint8_t lp_vref = ((target_voltage - min_vout) * (float)(lp_vref_high - lp_vref_low)) / diff_vout;
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lp_vref += lp_vref_low;
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EMU->DCDCLPVCTRL = (lp_vref << _EMU_DCDCLPVCTRL_LPVREF_SHIFT) | EMU_DCDCLPVCTRL_LPATT;
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}
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else
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{
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float max_vout = 1800.f;
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float min_vout = 1200.f;
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float diff_vout = max_vout - min_vout;
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uint8_t ln_vref_high = (DEVINFO->DCDCLNVCTRL0 & _DEVINFO_DCDCLNVCTRL0_1V8LNATT0_MASK) >> _DEVINFO_DCDCLNVCTRL0_1V8LNATT0_SHIFT;
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uint8_t ln_vref_low = (DEVINFO->DCDCLNVCTRL0 & _DEVINFO_DCDCLNVCTRL0_1V2LNATT0_MASK) >> _DEVINFO_DCDCLNVCTRL0_1V2LNATT0_SHIFT;
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uint8_t ln_vref = ((target_voltage - min_vout) * (float)(ln_vref_high - ln_vref_low)) / diff_vout;
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ln_vref += ln_vref_low;
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EMU->DCDCLNVCTRL = ln_vref << _EMU_DCDCLNVCTRL_LNVREF_SHIFT;
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uint8_t lp_vref_low = 0;
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uint8_t lp_vref_high = 0;
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switch(lp_bias)
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{
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case 0:
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{
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lp_vref_high = (DEVINFO->DCDCLPVCTRL0 & _DEVINFO_DCDCLPVCTRL2_3V0LPATT1LPCMPBIAS0_MASK) >> _DEVINFO_DCDCLPVCTRL2_3V0LPATT1LPCMPBIAS0_SHIFT;
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lp_vref_low = (DEVINFO->DCDCLPVCTRL0 & _DEVINFO_DCDCLPVCTRL2_1V8LPATT1LPCMPBIAS0_MASK) >> _DEVINFO_DCDCLPVCTRL2_1V8LPATT1LPCMPBIAS0_SHIFT;
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}
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break;
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case 1:
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{
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lp_vref_high = (DEVINFO->DCDCLPVCTRL0 & _DEVINFO_DCDCLPVCTRL2_3V0LPATT1LPCMPBIAS1_MASK) >> _DEVINFO_DCDCLPVCTRL2_3V0LPATT1LPCMPBIAS1_SHIFT;
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lp_vref_low = (DEVINFO->DCDCLPVCTRL0 & _DEVINFO_DCDCLPVCTRL2_1V8LPATT1LPCMPBIAS1_MASK) >> _DEVINFO_DCDCLPVCTRL2_1V8LPATT1LPCMPBIAS1_SHIFT;
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}
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break;
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case 2:
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{
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lp_vref_high = (DEVINFO->DCDCLPVCTRL1 & _DEVINFO_DCDCLPVCTRL3_3V0LPATT1LPCMPBIAS2_MASK) >> _DEVINFO_DCDCLPVCTRL3_3V0LPATT1LPCMPBIAS2_SHIFT;
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lp_vref_low = (DEVINFO->DCDCLPVCTRL1 & _DEVINFO_DCDCLPVCTRL3_1V8LPATT1LPCMPBIAS2_MASK) >> _DEVINFO_DCDCLPVCTRL3_1V8LPATT1LPCMPBIAS2_SHIFT;
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}
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break;
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case 3:
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{
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lp_vref_high = (DEVINFO->DCDCLPVCTRL1 & _DEVINFO_DCDCLPVCTRL3_3V0LPATT1LPCMPBIAS3_MASK) >> _DEVINFO_DCDCLPVCTRL3_3V0LPATT1LPCMPBIAS3_SHIFT;
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lp_vref_low = (DEVINFO->DCDCLPVCTRL1 & _DEVINFO_DCDCLPVCTRL3_1V8LPATT1LPCMPBIAS3_MASK) >> _DEVINFO_DCDCLPVCTRL3_1V8LPATT1LPCMPBIAS3_SHIFT;
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}
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break;
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}
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uint8_t lp_vref = ((target_voltage - min_vout) * (float)(lp_vref_high - lp_vref_low)) / diff_vout;
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lp_vref += lp_vref_low;
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EMU->DCDCLPVCTRL = lp_vref << _EMU_DCDCLPVCTRL_LPVREF_SHIFT;
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}
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EMU->DCDCLPCTRL = (EMU->DCDCLPCTRL & ~_EMU_DCDCLPCTRL_LPCMPHYSSELEM234H_MASK) | (((DEVINFO->DCDCLPCMPHYSSEL1 & (((uint32_t)0xFF) << (lp_bias * 8))) >> (lp_bias * 8)) << _EMU_DCDCLPCTRL_LPCMPHYSSELEM234H_SHIFT);
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while(EMU->DCDCSYNC & EMU_DCDCSYNC_DCDCCTRLBUSY); // Wait for configuration to write
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// Calibration
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//EMU->DCDCLNCOMPCTRL = 0x57204077; // Compensation for 1uF DCDC capacitor
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EMU->DCDCLNCOMPCTRL = 0xB7102137; // Compensation for 4.7uF DCDC capacitor
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// Enable DCDC converter
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EMU->DCDCCTRL = EMU_DCDCCTRL_DCDCMODEEM4_EM4LOWPOWER | EMU_DCDCCTRL_DCDCMODEEM23_EM23LOWPOWER | EMU_DCDCCTRL_DCDCMODE_LOWNOISE;
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// Switch digital domain to DVDD
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EMU->PWRCTRL = EMU_PWRCTRL_REGPWRSEL_DVDD | EMU_PWRCTRL_ANASW_AVDD;
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}
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void cmu_hfxo_startup_calib(uint16_t ib_trim, uint16_t c_tune)
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{
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if(CMU->STATUS & CMU_STATUS_HFXOENS)
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return;
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CMU->HFXOSTARTUPCTRL = (CMU->HFXOSTARTUPCTRL & ~(_CMU_HFXOSTARTUPCTRL_CTUNE_MASK | _CMU_HFXOSTARTUPCTRL_IBTRIMXOCORE_MASK)) | (((uint32_t)c_tune << _CMU_HFXOSTARTUPCTRL_CTUNE_SHIFT) & _CMU_HFXOSTARTUPCTRL_CTUNE_MASK) | (((uint32_t)ib_trim << _CMU_HFXOSTARTUPCTRL_IBTRIMXOCORE_SHIFT) & _CMU_HFXOSTARTUPCTRL_IBTRIMXOCORE_MASK);
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}
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void cmu_hfxo_steady_calib(uint16_t ib_trim, uint16_t c_tune)
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{
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if(CMU->STATUS & CMU_STATUS_HFXOENS)
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return;
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CMU->HFXOSTEADYSTATECTRL = (CMU->HFXOSTEADYSTATECTRL & ~(_CMU_HFXOSTEADYSTATECTRL_CTUNE_MASK | _CMU_HFXOSTEADYSTATECTRL_IBTRIMXOCORE_MASK)) | (((uint32_t)c_tune << _CMU_HFXOSTEADYSTATECTRL_CTUNE_SHIFT) & _CMU_HFXOSTEADYSTATECTRL_CTUNE_MASK) | (((uint32_t)ib_trim << _CMU_HFXOSTEADYSTATECTRL_IBTRIMXOCORE_SHIFT) & _CMU_HFXOSTEADYSTATECTRL_IBTRIMXOCORE_MASK);
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}
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void cmu_hfrco_calib(uint32_t calibration)
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{
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if(CMU->STATUS & CMU_STATUS_DPLLENS)
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return;
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while(CMU->SYNCBUSY & CMU_SYNCBUSY_HFRCOBSY);
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CMU->HFRCOCTRL = calibration;
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while(CMU->SYNCBUSY & CMU_SYNCBUSY_HFRCOBSY);
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}
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void cmu_ushfrco_calib(uint8_t enable, uint32_t calibration)
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{
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if(CMU->USBCRCTRL & CMU_USBCRCTRL_USBCREN)
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return;
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if(!enable)
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{
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CMU->OSCENCMD = CMU_OSCENCMD_USHFRCODIS;
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while(CMU->STATUS & CMU_STATUS_USHFRCOENS);
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return;
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}
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while(CMU->SYNCBUSY & CMU_SYNCBUSY_USHFRCOBSY);
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CMU->USHFRCOCTRL = calibration | CMU_USHFRCOCTRL_FINETUNINGEN;
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while(CMU->SYNCBUSY & CMU_SYNCBUSY_USHFRCOBSY);
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if(enable && !(CMU->STATUS & CMU_STATUS_USHFRCOENS))
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{
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CMU->OSCENCMD = CMU_OSCENCMD_USHFRCOEN;
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while(!(CMU->STATUS & CMU_STATUS_USHFRCORDY));
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}
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}
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void cmu_auxhfrco_calib(uint8_t enable, uint32_t calibration)
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{
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if(!enable)
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{
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CMU->OSCENCMD = CMU_OSCENCMD_AUXHFRCODIS;
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while(CMU->STATUS & CMU_STATUS_AUXHFRCOENS);
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return;
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}
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while(CMU->SYNCBUSY & CMU_SYNCBUSY_AUXHFRCOBSY);
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CMU->AUXHFRCOCTRL = calibration;
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while(CMU->SYNCBUSY & CMU_SYNCBUSY_AUXHFRCOBSY);
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if(enable && !(CMU->STATUS & CMU_STATUS_AUXHFRCOENS))
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{
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CMU->OSCENCMD = CMU_OSCENCMD_AUXHFRCOEN;
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while(!(CMU->STATUS & CMU_STATUS_AUXHFRCORDY));
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}
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}
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void cmu_init(void)
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{
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// Change SDIO clock to HFXO if HFRCO selected and disable it
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CMU->SDIOCTRL = CMU_SDIOCTRL_SDIOCLKDIS | CMU_SDIOCTRL_SDIOCLKSEL_HFXO;
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while(CMU->STATUS & CMU_STATUS_SDIOCLKENS);
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// Change QSPI clock to HFXO if HFRCO selected and disable it
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CMU->QSPICTRL = CMU_QSPICTRL_QSPI0CLKDIS | CMU_QSPICTRL_QSPI0CLKSEL_HFXO;
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while(CMU->STATUS & CMU_STATUS_QSPI0CLKENS);
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// Disable DPLL if enabled
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if(CMU->STATUS & CMU_STATUS_DPLLENS)
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{
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CMU->OSCENCMD = CMU_OSCENCMD_DPLLDIS;
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while(CMU->STATUS & CMU_STATUS_DPLLENS);
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}
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// Disable HFXO if enabled
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if(CMU->STATUS & CMU_STATUS_HFXOENS)
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{
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CMU->OSCENCMD = CMU_OSCENCMD_HFXODIS;
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while(CMU->STATUS & CMU_STATUS_HFXOENS);
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}
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// Setup HFXO
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CMU->HFXOCTRL = CMU_HFXOCTRL_PEAKDETMODE_AUTOCMD | CMU_HFXOCTRL_MODE_XTAL;
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CMU->HFXOCTRL1 = CMU_HFXOCTRL1_PEAKDETTHR_DEFAULT;
|
|
CMU->HFXOSTEADYSTATECTRL |= CMU_HFXOSTEADYSTATECTRL_PEAKMONEN;
|
|
CMU->HFXOTIMEOUTCTRL = (7 << _CMU_HFXOTIMEOUTCTRL_PEAKDETTIMEOUT_SHIFT) | (8 << _CMU_HFXOTIMEOUTCTRL_STEADYTIMEOUT_SHIFT) | (12 << _CMU_HFXOTIMEOUTCTRL_STARTUPTIMEOUT_SHIFT);
|
|
|
|
// Enable HFXO and wait for it to be ready
|
|
CMU->OSCENCMD = CMU_OSCENCMD_HFXOEN;
|
|
while(!(CMU->STATUS & CMU_STATUS_HFXORDY));
|
|
|
|
// Switch main clock to HFXO and wait for it to be selected
|
|
CMU->HFCLKSEL = CMU_HFCLKSEL_HF_HFXO;
|
|
while((CMU->HFCLKSTATUS & _CMU_HFCLKSTATUS_SELECTED_MASK) != CMU_HFCLKSTATUS_SELECTED_HFXO);
|
|
|
|
// Calibrate HFRCO for 72MHz and enable tuning by PLL
|
|
cmu_hfrco_calib((DEVINFO->HFRCOCAL16) | CMU_HFRCOCTRL_FINETUNINGEN);
|
|
|
|
// Setup the PLL
|
|
CMU->DPLLCTRL = CMU_DPLLCTRL_REFSEL_HFXO | CMU_DPLLCTRL_AUTORECOVER | CMU_DPLLCTRL_EDGESEL_RISE | CMU_DPLLCTRL_MODE_FREQLL;
|
|
// 72MHz = 50MHz (HFXO) * 1.44 (144/100)
|
|
CMU->DPLLCTRL1 = (143 << _CMU_DPLLCTRL1_N_SHIFT) | (99 << _CMU_DPLLCTRL1_M_SHIFT); // fHFRCO = fHFXO * (N + 1) / (M + 1)
|
|
|
|
// Enable the DPLL and wait for it to be ready
|
|
CMU->OSCENCMD = CMU_OSCENCMD_DPLLEN;
|
|
while(!(CMU->STATUS & CMU_STATUS_DPLLRDY));
|
|
|
|
// Config peripherals for the new frequency (freq > 32MHz)
|
|
CMU->CTRL |= CMU_CTRL_WSHFLE;
|
|
|
|
// Set prescalers
|
|
CMU->HFPRESC = CMU_HFPRESC_HFCLKLEPRESC_DIV2 | CMU_HFPRESC_PRESC_NODIVISION;
|
|
CMU->HFBUSPRESC = 1 << _CMU_HFBUSPRESC_PRESC_SHIFT;
|
|
CMU->HFCOREPRESC = 0 << _CMU_HFCOREPRESC_PRESC_SHIFT;
|
|
CMU->HFPERPRESC = 1 << _CMU_HFPERPRESC_PRESC_SHIFT;
|
|
CMU->HFEXPPRESC = 0 << _CMU_HFEXPPRESC_PRESC_SHIFT;
|
|
CMU->HFPERPRESCB = 0 << _CMU_HFPERPRESCB_PRESC_SHIFT;
|
|
CMU->HFPERPRESCC = 1 << _CMU_HFPERPRESCC_PRESC_SHIFT;
|
|
|
|
// Enable clock to peripherals
|
|
CMU->CTRL |= CMU_CTRL_HFPERCLKEN;
|
|
|
|
// Switch main clock to HFRCO and wait for it to be selected
|
|
CMU->HFCLKSEL = CMU_HFCLKSEL_HF_HFRCO;
|
|
while((CMU->HFCLKSTATUS & _CMU_HFCLKSTATUS_SELECTED_MASK) != CMU_HFCLKSTATUS_SELECTED_HFRCO);
|
|
|
|
// LFA Clock
|
|
CMU->LFACLKSEL = CMU_LFACLKSEL_LFA_LFRCO;
|
|
|
|
// LFB Clock
|
|
CMU->LFBCLKSEL = CMU_LFBCLKSEL_LFB_LFRCO;
|
|
|
|
// LFC Clock
|
|
CMU->LFCCLKSEL = CMU_LFCCLKSEL_LFC_LFRCO;
|
|
|
|
// LFE Clock
|
|
CMU->LFECLKSEL = CMU_LFECLKSEL_LFE_ULFRCO;
|
|
}
|
|
|
|
void systick_init(void)
|
|
{
|
|
SysTick->LOAD = (72000000 / 1000) - 1;
|
|
SysTick->VAL = 0;
|
|
SysTick->CTRL = SysTick_CTRL_TICKINT_Msk | SysTick_CTRL_ENABLE_Msk | SysTick_CTRL_CLKSOURCE_Msk;
|
|
|
|
SCB->SHP[11] = 7 << (8 - __NVIC_PRIO_BITS); // Set priority 3,1 (min)
|
|
}
|
|
|
|
void gpio_init(void)
|
|
{
|
|
CMU->HFBUSCLKEN0 |= CMU_HFBUSCLKEN0_GPIO;
|
|
|
|
// NC - Not Connected (not available in mcu package)
|
|
// NR - Not routed (no routing to pin on pcb, floating)
|
|
// NU - Not used (not currently in use)
|
|
|
|
// Port A
|
|
GPIO->P[0].CTRL = GPIO_P_CTRL_DRIVESTRENGTHALT_STRONG | (6 << _GPIO_P_CTRL_SLEWRATEALT_SHIFT)
|
|
| GPIO_P_CTRL_DRIVESTRENGTH_STRONG | (6 << _GPIO_P_CTRL_SLEWRATE_SHIFT);
|
|
GPIO->P[0].MODEL = GPIO_P_MODEL_MODE0_DISABLED // NU
|
|
| GPIO_P_MODEL_MODE1_DISABLED // NU
|
|
| GPIO_P_MODEL_MODE2_DISABLED // NU
|
|
| GPIO_P_MODEL_MODE3_DISABLED // NU
|
|
| GPIO_P_MODEL_MODE4_DISABLED // NU
|
|
| GPIO_P_MODEL_MODE5_DISABLED // NU
|
|
| GPIO_P_MODEL_MODE6_DISABLED // NU
|
|
| GPIO_P_MODEL_MODE7_DISABLED; // NC
|
|
GPIO->P[0].MODEH = GPIO_P_MODEH_MODE8_DISABLED // GPIO - MIC_ENABLE
|
|
| GPIO_P_MODEH_MODE9_DISABLED // NC
|
|
| GPIO_P_MODEH_MODE10_DISABLED // NC
|
|
| GPIO_P_MODEH_MODE11_DISABLED // NC
|
|
| GPIO_P_MODEH_MODE12_WIREDAND // LED0R
|
|
| GPIO_P_MODEH_MODE13_WIREDAND // LED0B
|
|
| GPIO_P_MODEH_MODE14_WIREDAND // LED0G
|
|
| GPIO_P_MODEH_MODE15_DISABLED; // NU
|
|
GPIO->P[0].DOUT = 0x7000; // Leds off By default
|
|
GPIO->P[0].OVTDIS = 0;
|
|
|
|
// Port B
|
|
GPIO->P[1].CTRL = GPIO_P_CTRL_DRIVESTRENGTHALT_STRONG | (6 << _GPIO_P_CTRL_SLEWRATEALT_SHIFT)
|
|
| GPIO_P_CTRL_DRIVESTRENGTH_STRONG | (6 << _GPIO_P_CTRL_SLEWRATE_SHIFT);
|
|
GPIO->P[1].MODEL = GPIO_P_MODEL_MODE0_DISABLED // NC
|
|
| GPIO_P_MODEL_MODE1_DISABLED // NC
|
|
| GPIO_P_MODEL_MODE2_DISABLED // NC
|
|
| GPIO_P_MODEL_MODE3_DISABLED // NU
|
|
| GPIO_P_MODEL_MODE4_DISABLED // NU
|
|
| GPIO_P_MODEL_MODE5_DISABLED // NU
|
|
| GPIO_P_MODEL_MODE6_DISABLED // NU
|
|
| GPIO_P_MODEL_MODE7_DISABLED; // MAIN_LFXTAL_P
|
|
GPIO->P[1].MODEH = GPIO_P_MODEH_MODE8_DISABLED // MAIN_LFXTAL_N
|
|
| GPIO_P_MODEH_MODE9_DISABLED // NC
|
|
| GPIO_P_MODEH_MODE10_DISABLED // NC
|
|
| GPIO_P_MODEH_MODE11_DISABLED // PDM_DAT0 - MIC_DATA
|
|
| GPIO_P_MODEH_MODE12_DISABLED // PDM_CLK - MIC_CLOCK
|
|
| GPIO_P_MODEH_MODE13_DISABLED // MAIN_HFXTAL_P
|
|
| GPIO_P_MODEH_MODE14_DISABLED // MAIN_HFXTAL_N
|
|
| GPIO_P_MODEH_MODE15_DISABLED; // NC
|
|
GPIO->P[1].DOUT = 0;
|
|
GPIO->P[1].OVTDIS = 0;
|
|
|
|
// Port C
|
|
GPIO->P[2].CTRL = GPIO_P_CTRL_DRIVESTRENGTHALT_STRONG | (6 << _GPIO_P_CTRL_SLEWRATEALT_SHIFT)
|
|
| GPIO_P_CTRL_DRIVESTRENGTH_STRONG | (7 << _GPIO_P_CTRL_SLEWRATE_SHIFT);
|
|
GPIO->P[2].MODEL = GPIO_P_MODEL_MODE0_DISABLED // NC
|
|
| GPIO_P_MODEL_MODE1_DISABLED // NC
|
|
| GPIO_P_MODEL_MODE2_DISABLED // NC
|
|
| GPIO_P_MODEL_MODE3_DISABLED // NC
|
|
| GPIO_P_MODEL_MODE4_DISABLED // NU
|
|
| GPIO_P_MODEL_MODE5_DISABLED // NU
|
|
| GPIO_P_MODEL_MODE6_DISABLED // NC
|
|
| GPIO_P_MODEL_MODE7_DISABLED; // NC
|
|
GPIO->P[2].MODEH = GPIO_P_MODEH_MODE8_DISABLED // NC
|
|
| GPIO_P_MODEH_MODE9_DISABLED // NC
|
|
| GPIO_P_MODEH_MODE10_DISABLED // NC
|
|
| GPIO_P_MODEH_MODE11_DISABLED // NC
|
|
| GPIO_P_MODEH_MODE12_DISABLED // NC
|
|
| GPIO_P_MODEH_MODE13_DISABLED // NC
|
|
| GPIO_P_MODEH_MODE14_DISABLED // NC
|
|
| GPIO_P_MODEH_MODE15_DISABLED; // NC
|
|
GPIO->P[2].DOUT = 0;
|
|
GPIO->P[2].OVTDIS = 0;
|
|
|
|
// Port D
|
|
GPIO->P[3].CTRL = GPIO_P_CTRL_DRIVESTRENGTHALT_STRONG | (6 << _GPIO_P_CTRL_SLEWRATEALT_SHIFT)
|
|
| GPIO_P_CTRL_DRIVESTRENGTH_STRONG | (6 << _GPIO_P_CTRL_SLEWRATE_SHIFT);
|
|
GPIO->P[3].MODEL = GPIO_P_MODEL_MODE0_DISABLED // NU
|
|
| GPIO_P_MODEL_MODE1_DISABLED // NU
|
|
| GPIO_P_MODEL_MODE2_DISABLED // NU
|
|
| GPIO_P_MODEL_MODE3_DISABLED // NU
|
|
| GPIO_P_MODEL_MODE4_DISABLED // NU
|
|
| GPIO_P_MODEL_MODE5_INPUT // GPIO - BTN0
|
|
| GPIO_P_MODEL_MODE6_WIREDAND // LED1R
|
|
| GPIO_P_MODEL_MODE7_DISABLED; // NU
|
|
GPIO->P[3].MODEH = GPIO_P_MODEH_MODE8_INPUT // GPIO - BTN1
|
|
| GPIO_P_MODEH_MODE9_DISABLED // NC
|
|
| GPIO_P_MODEH_MODE10_DISABLED // NC
|
|
| GPIO_P_MODEH_MODE11_DISABLED // NC
|
|
| GPIO_P_MODEH_MODE12_DISABLED // NC
|
|
| GPIO_P_MODEH_MODE13_DISABLED // NC
|
|
| GPIO_P_MODEH_MODE14_DISABLED // NC
|
|
| GPIO_P_MODEH_MODE15_DISABLED; // NC
|
|
GPIO->P[3].DOUT = 0;
|
|
GPIO->P[3].OVTDIS = 0;
|
|
|
|
// Port E
|
|
GPIO->P[4].CTRL = GPIO_P_CTRL_DRIVESTRENGTHALT_STRONG | (6 << _GPIO_P_CTRL_SLEWRATEALT_SHIFT)
|
|
| GPIO_P_CTRL_DRIVESTRENGTH_STRONG | (6 << _GPIO_P_CTRL_SLEWRATE_SHIFT);
|
|
GPIO->P[4].MODEL = GPIO_P_MODEL_MODE0_DISABLED // NC
|
|
| GPIO_P_MODEL_MODE1_DISABLED // NC
|
|
| GPIO_P_MODEL_MODE2_DISABLED // NC
|
|
| GPIO_P_MODEL_MODE3_DISABLED // NC
|
|
| GPIO_P_MODEL_MODE4_DISABLED // NU
|
|
| GPIO_P_MODEL_MODE5_DISABLED // NU
|
|
| GPIO_P_MODEL_MODE6_DISABLED // NU
|
|
| GPIO_P_MODEL_MODE7_DISABLED; // NU
|
|
GPIO->P[4].MODEH = GPIO_P_MODEH_MODE8_DISABLED // NU
|
|
| GPIO_P_MODEH_MODE9_DISABLED // NU
|
|
| GPIO_P_MODEH_MODE10_DISABLED // NU
|
|
| GPIO_P_MODEH_MODE11_DISABLED // NU
|
|
| GPIO_P_MODEH_MODE12_WIREDAND // LED1B
|
|
| GPIO_P_MODEH_MODE13_DISABLED // NU
|
|
| GPIO_P_MODEH_MODE14_DISABLED // NU
|
|
| GPIO_P_MODEH_MODE15_DISABLED; // NU
|
|
GPIO->P[4].DOUT = 0;
|
|
GPIO->P[4].OVTDIS = 0;
|
|
|
|
// Port F
|
|
GPIO->P[5].CTRL = GPIO_P_CTRL_DRIVESTRENGTHALT_STRONG | (6 << _GPIO_P_CTRL_SLEWRATEALT_SHIFT)
|
|
| GPIO_P_CTRL_DRIVESTRENGTH_STRONG | (6 << _GPIO_P_CTRL_SLEWRATE_SHIFT);
|
|
GPIO->P[5].MODEL = GPIO_P_MODEL_MODE0_PUSHPULL // SWCLK
|
|
| GPIO_P_MODEL_MODE1_PUSHPULL // SWDIO
|
|
| GPIO_P_MODEL_MODE2_PUSHPULL // SWO
|
|
| GPIO_P_MODEL_MODE3_DISABLED // NC
|
|
| GPIO_P_MODEL_MODE4_DISABLED // NC
|
|
| GPIO_P_MODEL_MODE5_DISABLED // NU
|
|
| GPIO_P_MODEL_MODE6_DISABLED // NC
|
|
| GPIO_P_MODEL_MODE7_DISABLED; // NC
|
|
GPIO->P[5].MODEH = GPIO_P_MODEH_MODE8_DISABLED // NC
|
|
| GPIO_P_MODEH_MODE9_DISABLED // NC
|
|
| GPIO_P_MODEH_MODE10_DISABLED // USB N
|
|
| GPIO_P_MODEH_MODE11_DISABLED // USB P
|
|
| GPIO_P_MODEH_MODE12_WIREDAND // LED1G
|
|
| GPIO_P_MODEH_MODE13_DISABLED // NC
|
|
| GPIO_P_MODEH_MODE14_DISABLED // NC
|
|
| GPIO_P_MODEH_MODE15_DISABLED; // NC
|
|
GPIO->P[5].DOUT = 0;
|
|
|
|
GPIO->P[5].OVTDIS = 0;
|
|
|
|
// Debugger Route
|
|
GPIO->ROUTEPEN &= ~(GPIO_ROUTEPEN_TDIPEN | GPIO_ROUTEPEN_TDOPEN); // Disable JTAG
|
|
GPIO->ROUTEPEN |= GPIO_ROUTEPEN_SWVPEN; // Enable SWO
|
|
GPIO->ROUTELOC0 = GPIO_ROUTELOC0_SWVLOC_LOC0; // SWO on PF2
|
|
|
|
// External interrupts
|
|
GPIO->EXTIPSELL = GPIO_EXTIPSELL_EXTIPSEL0_PORTE // NU
|
|
| GPIO_EXTIPSELL_EXTIPSEL1_PORTB // NU
|
|
| GPIO_EXTIPSELL_EXTIPSEL2_PORTB // NU
|
|
| GPIO_EXTIPSELL_EXTIPSEL3_PORTB // NU
|
|
| GPIO_EXTIPSELL_EXTIPSEL4_PORTA // NU
|
|
| GPIO_EXTIPSELL_EXTIPSEL5_PORTA // NU
|
|
| GPIO_EXTIPSELL_EXTIPSEL6_PORTC // NU
|
|
| GPIO_EXTIPSELL_EXTIPSEL7_PORTC; // NU
|
|
GPIO->EXTIPSELH = GPIO_EXTIPSELH_EXTIPSEL8_PORTA // NU
|
|
| GPIO_EXTIPSELH_EXTIPSEL9_PORTE // NU
|
|
| GPIO_EXTIPSELH_EXTIPSEL10_PORTF // NU
|
|
| GPIO_EXTIPSELH_EXTIPSEL11_PORTA // NU
|
|
| GPIO_EXTIPSELH_EXTIPSEL12_PORTA // NU
|
|
| GPIO_EXTIPSELH_EXTIPSEL13_PORTE // NU
|
|
| GPIO_EXTIPSELH_EXTIPSEL14_PORTF // NU
|
|
| GPIO_EXTIPSELH_EXTIPSEL15_PORTA; // NU
|
|
|
|
GPIO->EXTIPINSELL = GPIO_EXTIPINSELL_EXTIPINSEL0_PIN3 // NU
|
|
| GPIO_EXTIPINSELL_EXTIPINSEL1_PIN1 // NU
|
|
| GPIO_EXTIPINSELL_EXTIPINSEL2_PIN2 // NU
|
|
| GPIO_EXTIPINSELL_EXTIPINSEL3_PIN3 // NU
|
|
| GPIO_EXTIPINSELL_EXTIPINSEL4_PIN6 // NU
|
|
| GPIO_EXTIPINSELL_EXTIPINSEL5_PIN7 // NU
|
|
| GPIO_EXTIPINSELL_EXTIPINSEL6_PIN4 // NU
|
|
| GPIO_EXTIPINSELL_EXTIPINSEL7_PIN7; // NU
|
|
GPIO->EXTIPINSELH = GPIO_EXTIPINSELH_EXTIPINSEL8_PIN8 // NU
|
|
| GPIO_EXTIPINSELH_EXTIPINSEL9_PIN9 // NU
|
|
| GPIO_EXTIPINSELH_EXTIPINSEL10_PIN11 // NU
|
|
| GPIO_EXTIPINSELH_EXTIPINSEL11_PIN8 // NU
|
|
| GPIO_EXTIPINSELH_EXTIPINSEL12_PIN13 // NU
|
|
| GPIO_EXTIPINSELH_EXTIPINSEL13_PIN15 // NU
|
|
| GPIO_EXTIPINSELH_EXTIPINSEL14_PIN12 // NU
|
|
| GPIO_EXTIPINSELH_EXTIPINSEL15_PIN12; // NU
|
|
|
|
}
|
|
|
|
/*--------------------------------------------------------------------*/
|
|
/* Board Init */
|
|
/*--------------------------------------------------------------------*/
|
|
|
|
void board_init(void)
|
|
{
|
|
|
|
emu_dcdc_init(1800.f, 50.f, 100.f, 0.f); // Init DC-DC converter (1.8 V, 50 mA active, 100 uA sleep, 0 mA reverse limit)
|
|
emu_init(0);
|
|
emu_reg_init(3300.f); // set output regulator to 3.3V
|
|
|
|
cmu_hfxo_startup_calib(0x200, 0x145); // Config HFXO Startup for 1280 uA, 36 pF (18 pF + 2 pF CLOAD)
|
|
cmu_hfxo_steady_calib(0x009, 0x145); // Config HFXO Steady for 12 uA, 36 pF (18 pF + 2 pF CLOAD)
|
|
|
|
cmu_init(); // Init Clock Management Unit
|
|
|
|
cmu_ushfrco_calib(1, DEVINFO->USHFRCOCAL13); // Enable and calibrate USHFRCO for 48 MHz
|
|
cmu_auxhfrco_calib(1, DEVINFO->AUXHFRCOCAL11); // Enable and calibrate AUXHFRCO for 32 MHz
|
|
|
|
CMU->USBCRCTRL = CMU_USBCRCTRL_USBCREN; // enable USB clock recovery
|
|
CMU->USBCTRL = CMU_USBCTRL_USBCLKSEL_USHFRCO | CMU_USBCTRL_USBCLKEN; // select USHFRCO as USB Phy clock source and enable it
|
|
|
|
CMU->HFBUSCLKEN0 |= CMU_HFBUSCLKEN0_USB; // enable USB peripheral clock
|
|
|
|
systick_init(); // Init system tick
|
|
|
|
gpio_init(); // Init IOs
|
|
|
|
}
|
|
|
|
/*--------------------------------------------------------------------*/
|
|
/* Board porting API */
|
|
/*--------------------------------------------------------------------*/
|
|
|
|
void board_led_write(bool state)
|
|
{
|
|
// Combine red and blue for pink Because it looks good :)
|
|
GPIO->P[LED_PORT].DOUT = (GPIO->P[LED_PORT].DOUT & ~((1 << LED_PIN_R) | (1 << LED_PIN_B))) | (state << LED_PIN_R) | (state << LED_PIN_B);
|
|
}
|
|
|
|
uint32_t board_button_read(void)
|
|
{
|
|
return !!(GPIO->P[BUTTON_PORT].DIN & (1 << BUTTON_PIN));
|
|
}
|
|
|
|
int board_uart_read(uint8_t* buf, int len)
|
|
{
|
|
(void) buf; (void) len;
|
|
return 0;
|
|
}
|
|
|
|
int board_uart_write(void const * buf, int len)
|
|
{
|
|
(void) buf; (void) len;
|
|
return 0;
|
|
}
|
|
|
|
#if CFG_TUSB_OS == OPT_OS_NONE
|
|
volatile uint32_t system_ticks = 0;
|
|
void SysTick_Handler(void)
|
|
{
|
|
system_ticks++;
|
|
}
|
|
|
|
uint32_t board_millis(void)
|
|
{
|
|
return system_ticks;
|
|
}
|
|
#endif
|
|
|
|
#ifdef USE_FULL_ASSERT
|
|
/**
|
|
* @brief Reports the name of the source file and the source line number
|
|
* where the assert_param error has occurred.
|
|
* @param file: pointer to the source file name
|
|
* @param line: assert_param error line source number
|
|
* @retval None
|
|
*/
|
|
void assert_failed(char *file, uint32_t line)
|
|
{
|
|
/* USER CODE BEGIN 6 */
|
|
/* User can add his own implementation to report the file name and line number,
|
|
tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
|
|
/* USER CODE END 6 */
|
|
}
|
|
#endif /* USE_FULL_ASSERT */
|