227 lines
7.2 KiB
C
227 lines
7.2 KiB
C
/*
|
|
* The MIT License (MIT)
|
|
*
|
|
* Copyright (c) 2019 Ha Thach (tinyusb.org)
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*
|
|
* This file is part of the TinyUSB stack.
|
|
*/
|
|
|
|
#include "../board.h"
|
|
|
|
#include "stm32f4xx.h"
|
|
#include "stm32f4xx_hal_conf.h"
|
|
|
|
//--------------------------------------------------------------------+
|
|
// Forward USB interrupt events to TinyUSB IRQ Handler
|
|
//--------------------------------------------------------------------+
|
|
void OTG_FS_IRQHandler(void)
|
|
{
|
|
tud_int_handler(0);
|
|
}
|
|
|
|
//--------------------------------------------------------------------+
|
|
// MACRO TYPEDEF CONSTANT ENUM
|
|
//--------------------------------------------------------------------+
|
|
|
|
#define LED_PORT GPIOC
|
|
#define LED_PIN GPIO_PIN_13
|
|
#define LED_STATE_ON 1
|
|
|
|
#define BUTTON_PORT GPIOA
|
|
#define BUTTON_PIN GPIO_PIN_0
|
|
#define BUTTON_STATE_ACTIVE 0
|
|
|
|
// enable all LED, Button, Uart, USB clock
|
|
static void all_rcc_clk_enable(void)
|
|
{
|
|
__HAL_RCC_GPIOA_CLK_ENABLE(); // USB D+, D-, Button
|
|
__HAL_RCC_GPIOC_CLK_ENABLE(); // LED
|
|
}
|
|
|
|
/**
|
|
* @brief System Clock Configuration
|
|
* The system Clock is configured as follow :
|
|
* System Clock source = PLL (HSE)
|
|
* SYSCLK(Hz) = 84000000
|
|
* HCLK(Hz) = 84000000
|
|
* AHB Prescaler = 1
|
|
* APB1 Prescaler = 2
|
|
* APB2 Prescaler = 1
|
|
* HSE Frequency(Hz) = 25000000
|
|
* PLL_M = HSE_VALUE/1000000
|
|
* PLL_N = 336
|
|
* PLL_P = 4
|
|
* PLL_Q = 7
|
|
* VDD(V) = 3.3
|
|
* Main regulator output voltage = Scale2 mode
|
|
* Flash Latency(WS) = 2
|
|
* @param None
|
|
* @retval None
|
|
*/
|
|
static void SystemClock_Config(void)
|
|
{
|
|
RCC_ClkInitTypeDef RCC_ClkInitStruct;
|
|
RCC_OscInitTypeDef RCC_OscInitStruct;
|
|
|
|
/* Enable Power Control clock */
|
|
__HAL_RCC_PWR_CLK_ENABLE();
|
|
|
|
/* The voltage scaling allows optimizing the power consumption when the device is
|
|
clocked below the maximum system frequency, to update the voltage scaling value
|
|
regarding system frequency refer to product datasheet. */
|
|
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE2);
|
|
|
|
/* Enable HSE Oscillator and activate PLL with HSE as source */
|
|
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
|
|
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
|
|
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
|
|
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
|
|
RCC_OscInitStruct.PLL.PLLM = HSE_VALUE/1000000;
|
|
RCC_OscInitStruct.PLL.PLLN = 336;
|
|
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV4;
|
|
RCC_OscInitStruct.PLL.PLLQ = 7;
|
|
HAL_RCC_OscConfig(&RCC_OscInitStruct);
|
|
|
|
/* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2
|
|
clocks dividers */
|
|
RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
|
|
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
|
|
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
|
|
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
|
|
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
|
|
HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2);
|
|
}
|
|
|
|
void board_init(void)
|
|
{
|
|
SystemClock_Config();
|
|
all_rcc_clk_enable();
|
|
|
|
#if CFG_TUSB_OS == OPT_OS_NONE
|
|
// 1ms tick timer
|
|
SysTick_Config(SystemCoreClock / 1000);
|
|
#elif CFG_TUSB_OS == OPT_OS_FREERTOS
|
|
// If freeRTOS is used, IRQ priority is limit by max syscall ( smaller is higher )
|
|
//NVIC_SetPriority(USB0_IRQn, configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY );
|
|
#endif
|
|
|
|
GPIO_InitTypeDef GPIO_InitStruct;
|
|
|
|
// LED
|
|
GPIO_InitStruct.Pin = LED_PIN;
|
|
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
|
|
GPIO_InitStruct.Pull = GPIO_PULLUP;
|
|
GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
|
|
HAL_GPIO_Init(LED_PORT, &GPIO_InitStruct);
|
|
|
|
board_led_write(false);
|
|
|
|
// Button
|
|
GPIO_InitStruct.Pin = BUTTON_PIN;
|
|
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
|
|
GPIO_InitStruct.Pull = BUTTON_STATE_ACTIVE ? GPIO_PULLDOWN : GPIO_PULLUP;
|
|
GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
|
|
HAL_GPIO_Init(BUTTON_PORT, &GPIO_InitStruct);
|
|
|
|
/* Configure USB FS GPIOs */
|
|
/* Configure USB D+ D- Pins */
|
|
GPIO_InitStruct.Pin = GPIO_PIN_11 | GPIO_PIN_12;
|
|
GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
|
|
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
|
|
GPIO_InitStruct.Pull = GPIO_NOPULL;
|
|
GPIO_InitStruct.Alternate = GPIO_AF10_OTG_FS;
|
|
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
|
|
|
|
/* Configure VBUS Pin */
|
|
GPIO_InitStruct.Pin = GPIO_PIN_9;
|
|
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
|
|
GPIO_InitStruct.Pull = GPIO_NOPULL;
|
|
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
|
|
|
|
/* This for ID line debug */
|
|
GPIO_InitStruct.Pin = GPIO_PIN_10;
|
|
GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
|
|
GPIO_InitStruct.Pull = GPIO_PULLUP;
|
|
GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
|
|
GPIO_InitStruct.Alternate = GPIO_AF10_OTG_FS;
|
|
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
|
|
|
|
// Enable USB OTG clock
|
|
__HAL_RCC_USB_OTG_FS_CLK_ENABLE();
|
|
|
|
// Blackpill doens't use VBUS sense (B device)
|
|
// explicitly disable it
|
|
USB_OTG_FS->GCCFG |= USB_OTG_GCCFG_NOVBUSSENS;
|
|
USB_OTG_FS->GCCFG &= ~USB_OTG_GCCFG_VBUSBSEN;
|
|
USB_OTG_FS->GCCFG &= ~USB_OTG_GCCFG_VBUSASEN;
|
|
}
|
|
|
|
//--------------------------------------------------------------------+
|
|
// Board porting API
|
|
//--------------------------------------------------------------------+
|
|
|
|
void board_led_write(bool state)
|
|
{
|
|
HAL_GPIO_WritePin(LED_PORT, LED_PIN, state ? LED_STATE_ON : (1-LED_STATE_ON));
|
|
}
|
|
|
|
uint32_t board_button_read(void)
|
|
{
|
|
return BUTTON_STATE_ACTIVE == HAL_GPIO_ReadPin(BUTTON_PORT, 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
|
|
|
|
void HardFault_Handler (void)
|
|
{
|
|
asm("bkpt");
|
|
}
|
|
|
|
// Required by __libc_init_array in startup code if we are compiling using
|
|
// -nostdlib/-nostartfiles.
|
|
void _init(void)
|
|
{
|
|
|
|
}
|