160 lines
4.5 KiB
C
160 lines
4.5 KiB
C
/*
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* The MIT License (MIT)
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*
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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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/* metadata:
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manufacturer: Infineon
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*/
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#include "xmc_gpio.h"
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#include "xmc_scu.h"
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#include "xmc_uart.h"
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#include "bsp/board_api.h"
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#include "board.h"
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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 USB0_0_IRQHandler(void) {
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tud_int_handler(0);
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}
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void board_init(void) {
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board_clock_init();
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SystemCoreClockUpdate();
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// LED
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XMC_GPIO_CONFIG_t led_cfg = {0};
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led_cfg.mode = XMC_GPIO_MODE_OUTPUT_PUSH_PULL;
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led_cfg.output_level = XMC_GPIO_OUTPUT_LEVEL_HIGH;
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led_cfg.output_strength = XMC_GPIO_OUTPUT_STRENGTH_MEDIUM;
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XMC_GPIO_Init(LED_PIN, &led_cfg);
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// Button
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XMC_GPIO_CONFIG_t button_cfg = {0};
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button_cfg.mode = XMC_GPIO_MODE_INPUT_TRISTATE;
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XMC_GPIO_Init(BUTTON_PIN, &button_cfg);
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#ifdef UART_DEV
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XMC_UART_CH_CONFIG_t uart_cfg = {0};
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uart_cfg.baudrate = CFG_BOARD_UART_BAUDRATE;
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uart_cfg.data_bits = 8;
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uart_cfg.stop_bits = 1;
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XMC_UART_CH_Init(UART_DEV, &uart_cfg);
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XMC_GPIO_SetMode(UART_RX_PIN, XMC_GPIO_MODE_INPUT_PULL_UP);
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XMC_UART_CH_SetInputSource(UART_DEV, XMC_UART_CH_INPUT_RXD, UART_RX_INPUT);
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XMC_UART_CH_Start(UART_DEV);
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XMC_GPIO_SetMode(UART_TX_PIN, (XMC_GPIO_MODE_t)(XMC_GPIO_MODE_OUTPUT_PUSH_PULL | UART_TX_PIN_AF));
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#endif
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#if CFG_TUSB_OS == OPT_OS_NONE
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// 1ms tick timer
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SysTick_Config(SystemCoreClock / 1000);
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#elif CFG_TUSB_OS == OPT_OS_FREERTOS
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// Explicitly disable systick to prevent its ISR runs before scheduler start
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SysTick->CTRL &= ~1U;
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// If freeRTOS is used, IRQ priority is limit by max syscall ( smaller is higher )
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NVIC_SetPriority(USB0_0_IRQn, configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY );
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#endif
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// USB Power Enable
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#if(UC_SERIES != XMC45)
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XMC_SCU_CLOCK_UngatePeripheralClock(XMC_SCU_PERIPHERAL_CLOCK_USB0);
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#endif
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XMC_SCU_RESET_DeassertPeripheralReset(XMC_SCU_PERIPHERAL_RESET_USB0);
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XMC_SCU_POWER_EnableUsb();
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}
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//--------------------------------------------------------------------+
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// Board porting API
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//--------------------------------------------------------------------+
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void board_led_write(bool state) {
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uint32_t is_high = state ? LED_STATE_ON : (1 - LED_STATE_ON);
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XMC_GPIO_SetOutputLevel(LED_PIN, is_high ? XMC_GPIO_OUTPUT_LEVEL_HIGH : XMC_GPIO_OUTPUT_LEVEL_LOW);
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}
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uint32_t board_button_read(void) {
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return BUTTON_STATE_ACTIVE == XMC_GPIO_GetInput(BUTTON_PIN);
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}
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size_t board_get_unique_id(uint8_t id[], size_t max_len) {
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uint8_t const len = tu_min8(16, max_len);
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memcpy(id, g_chipid, len);
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return len;
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}
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int board_uart_read(uint8_t* buf, int len) {
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#ifdef UART_DEV
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for(int i=0;i<len;i++) {
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buf[i] = XMC_UART_CH_GetReceivedData(UART_DEV);
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}
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return len;
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#else
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(void) buf;
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(void) len;
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return 0;
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#endif
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}
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int board_uart_write(void const* buf, int len) {
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#ifdef UART_DEV
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char const* bufch = (char const*) buf;
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for(int i=0;i<len;i++) {
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XMC_UART_CH_Transmit(UART_DEV, bufch[i]);
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}
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return len;
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#else
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(void) buf;
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(void) len;
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return 0;
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#endif
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}
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#if CFG_TUSB_OS == OPT_OS_NONE
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volatile uint32_t system_ticks = 0;
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void SysTick_Handler(void) {
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system_ticks++;
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}
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uint32_t board_millis(void) {
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return system_ticks;
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}
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#endif
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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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