diff options
Diffstat (limited to 'tinyusb/hw/bsp/stm32f303disco/stm32f303disco.c')
| -rwxr-xr-x | tinyusb/hw/bsp/stm32f303disco/stm32f303disco.c | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/tinyusb/hw/bsp/stm32f303disco/stm32f303disco.c b/tinyusb/hw/bsp/stm32f303disco/stm32f303disco.c new file mode 100755 index 00000000..33552bc0 --- /dev/null +++ b/tinyusb/hw/bsp/stm32f303disco/stm32f303disco.c @@ -0,0 +1,215 @@ +/* + * 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 "stm32f3xx_hal.h" + +//--------------------------------------------------------------------+ +// Forward USB interrupt events to TinyUSB IRQ Handler +//--------------------------------------------------------------------+ + +// USB defaults to using interrupts 19, 20 and 42, however, this BSP sets the +// SYSCFG_CFGR1.USB_IT_RMP bit remapping interrupts to 74, 75 and 76. + +// FIXME: Do all three need to be handled, or just the LP one? +// USB high-priority interrupt (Channel 74): Triggered only by a correct +// transfer event for isochronous and double-buffer bulk transfer to reach +// the highest possible transfer rate. +void USB_HP_IRQHandler(void) +{ + tud_int_handler(0); +} + +// USB low-priority interrupt (Channel 75): Triggered by all USB events +// (Correct transfer, USB reset, etc.). The firmware has to check the +// interrupt source before serving the interrupt. +void USB_LP_IRQHandler(void) +{ + tud_int_handler(0); +} + +// USB wakeup interrupt (Channel 76): Triggered by the wakeup event from the USB +// Suspend mode. +void USBWakeUp_RMP_IRQHandler(void) +{ + tud_int_handler(0); +} + +//--------------------------------------------------------------------+ +// MACRO TYPEDEF CONSTANT ENUM +//--------------------------------------------------------------------+ + +#define LED_PORT GPIOE +#define LED_PIN GPIO_PIN_9 +#define LED_STATE_ON 1 + +#define BUTTON_PORT GPIOA +#define BUTTON_PIN GPIO_PIN_0 +#define BUTTON_STATE_ACTIVE 1 + + +/** + * @brief System Clock Configuration + * The system Clock is configured as follow : + * System Clock source = PLL (HSE) + * SYSCLK(Hz) = 72000000 + * HCLK(Hz) = 72000000 + * AHB Prescaler = 1 + * APB1 Prescaler = 2 + * APB2 Prescaler = 1 + * HSE Frequency(Hz) = 8000000 + * HSE PREDIV = 1 + * PLLMUL = RCC_PLL_MUL9 (9) + * Flash Latency(WS) = 2 + * @param None + * @retval None + */ +static void SystemClock_Config(void) +{ + RCC_ClkInitTypeDef RCC_ClkInitStruct; + RCC_OscInitTypeDef RCC_OscInitStruct; + RCC_PeriphCLKInitTypeDef RCC_PeriphClkInit; + + /* Enable HSE Oscillator and activate PLL with HSE as source */ + RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE; + RCC_OscInitStruct.HSEState = RCC_HSE_ON; + RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1; + RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; + RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE; + RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9; + HAL_RCC_OscConfig(&RCC_OscInitStruct); + + /* Configures the USB clock */ + HAL_RCCEx_GetPeriphCLKConfig(&RCC_PeriphClkInit); + RCC_PeriphClkInit.USBClockSelection = RCC_USBCLKSOURCE_PLL_DIV1_5; + HAL_RCCEx_PeriphCLKConfig(&RCC_PeriphClkInit); + + /* 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); + + /* Enable Power Clock */ + __HAL_RCC_PWR_CLK_ENABLE(); +} + +void board_init(void) +{ + SystemClock_Config(); + + #if CFG_TUSB_OS == OPT_OS_NONE + // 1ms tick timer + SysTick_Config(SystemCoreClock / 1000); + #endif + + // Remap the USB interrupts + __HAL_RCC_SYSCFG_CLK_ENABLE(); + __HAL_REMAPINTERRUPT_USB_ENABLE(); + + // LED + __HAL_RCC_GPIOE_CLK_ENABLE(); + GPIO_InitTypeDef GPIO_InitStruct; + GPIO_InitStruct.Pin = LED_PIN; + GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; + GPIO_InitStruct.Pull = GPIO_PULLUP; + GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH; + HAL_GPIO_Init(LED_PORT, &GPIO_InitStruct); + + // Button + __HAL_RCC_GPIOA_CLK_ENABLE(); + GPIO_InitStruct.Pin = BUTTON_PIN; + GPIO_InitStruct.Mode = GPIO_MODE_INPUT; + GPIO_InitStruct.Pull = GPIO_PULLDOWN; + GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH; + HAL_GPIO_Init(BUTTON_PORT, &GPIO_InitStruct); + + /* Configure USB DM and DP pins */ + __HAL_RCC_GPIOA_CLK_ENABLE(); + GPIO_InitStruct.Pin = (GPIO_PIN_11 | GPIO_PIN_12); + GPIO_InitStruct.Mode = GPIO_MODE_AF_PP; + GPIO_InitStruct.Pull = GPIO_NOPULL; + GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH; + GPIO_InitStruct.Alternate = GPIO_AF14_USB; + HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); + + // Enable USB clock + __HAL_RCC_USB_CLK_ENABLE(); +} + +//--------------------------------------------------------------------+ +// 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) +{ + +} |