diff options
Diffstat (limited to 'tinyusb/hw/bsp/stm32l4r5nucleo/stm32l4r5nucleo.c')
| -rwxr-xr-x | tinyusb/hw/bsp/stm32l4r5nucleo/stm32l4r5nucleo.c | 287 |
1 files changed, 287 insertions, 0 deletions
diff --git a/tinyusb/hw/bsp/stm32l4r5nucleo/stm32l4r5nucleo.c b/tinyusb/hw/bsp/stm32l4r5nucleo/stm32l4r5nucleo.c new file mode 100755 index 00000000..bab66b55 --- /dev/null +++ b/tinyusb/hw/bsp/stm32l4r5nucleo/stm32l4r5nucleo.c @@ -0,0 +1,287 @@ +/* + * The MIT License (MIT) + * + * Copyright (c) 2019 William D. Jones (thor0505@comcast.net), + * Ha Thach (tinyusb.org) + * Uwe Bonnes (bon@elektron.ikp.physik.tu-darmstadt.de) + * + * 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 "stm32l4xx_hal.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 GPIOB +#define LED_PIN GPIO_PIN_14 +#define LED_STATE_ON 1 + +#define BUTTON_PORT GPIOC +#define BUTTON_PIN GPIO_PIN_13 +#define BUTTON_STATE_ACTIVE 1 + +#define UARTx LPUART1 +#define UART_GPIO_PORT GPIOG +#define UART_GPIO_AF GPIO_AF8_LPUART1 +#define UART_TX_PIN GPIO_PIN_7 +#define UART_RX_PIN GPIO_PIN_8 + +UART_HandleTypeDef UartHandle; + +// enable all LED, Button, Uart, USB clock +static void all_rcc_clk_enable(void) +{ + __HAL_RCC_GPIOA_CLK_ENABLE(); // USB D+, D- + __HAL_RCC_GPIOB_CLK_ENABLE(); // LED + __HAL_RCC_GPIOC_CLK_ENABLE(); // Button + __HAL_RCC_GPIOG_CLK_ENABLE(); // Uart TX, RX + __HAL_RCC_LPUART1_CLK_ENABLE(); // LPUart1 module +} + +/** + * @brief System Clock Configuration + * The system Clock is configured as follow : + * System Clock source = PLL (MSI) + * SYSCLK(Hz) = 120000000 + * HCLK(Hz) = 120000000 + * AHB Prescaler = 1 + * APB1 Prescaler = 1 + * APB2 Prescaler = 1 + * MSI Frequency(Hz) = 48000000 + * PLL_M = 12 + * PLL_N = 60 + * PLL_P = 2 + * PLL_Q = 2 + * VDD(V) = 3.3 + * Main regulator output voltage = Scale1 mode + * Flash Latency(WS) = 5 + * The USB clock configuration from PLLSAI: + * PLLSAIP = 8 FIXME + * PLLSAIN = 384 FIXME + * PLLSAIQ = 7 FIXME + * @param None + * @retval None + */ +void SystemClock_Config(void) +{ + RCC_ClkInitTypeDef RCC_ClkInitStruct; + RCC_OscInitTypeDef RCC_OscInitStruct; + RCC_PeriphCLKInitTypeDef PeriphClkInitStruct = {0}; + + /* Activate PLL with MSI , stabilizied via PLL by LSE */ + RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSE | RCC_OSCILLATORTYPE_MSI; + RCC_OscInitStruct.MSIState = RCC_MSI_ON; + RCC_OscInitStruct.LSEState = RCC_LSE_ON; + RCC_OscInitStruct.MSIClockRange = RCC_MSIRANGE_11; + RCC_OscInitStruct.MSICalibrationValue = RCC_MSICALIBRATION_DEFAULT; + RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; + RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_MSI; + RCC_OscInitStruct.PLL.PLLM = 12; + RCC_OscInitStruct.PLL.PLLN = 60; + RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2; + RCC_OscInitStruct.PLL.PLLQ = 2; + HAL_RCC_OscConfig(&RCC_OscInitStruct); + + /* Enable MSI Auto-calibration through LSE */ + HAL_RCCEx_EnableMSIPLLMode(); + + /* Select MSI output as USB clock source */ + PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_USB; + PeriphClkInitStruct.UsbClockSelection = RCC_USBCLKSOURCE_MSI; + HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct); + + /* Select MSI output as USB clock source */ + PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_LPUART1; + PeriphClkInitStruct.Lpuart1ClockSelection = RCC_LPUART1CLKSOURCE_PCLK1; + HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct); + + /* 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; + // Avoid overshoot and start with HCLK 60 MHz + RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV2; + RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1; + RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2; + HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_3); + + /* AHB prescaler divider at 1 as second step */ + RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK; + RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; + HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5); +} + +void board_init(void) +{ + /* Enable Power Clock*/ + __HAL_RCC_PWR_CLK_ENABLE(); + /* Enable voltage range 1 boost mode for frequency above 80 Mhz */ + HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1_BOOST); + + /* Set tick interrupt priority, default HAL value is intentionally invalid + and that prevents PLL initialization in HAL_RCC_OscConfig() */ + + HAL_InitTick((1UL << __NVIC_PRIO_BITS) - 1UL); + + 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 + + /* Enable USB power on Pwrctrl CR2 register */ + HAL_PWREx_EnableVddUSB(); + + GPIO_InitTypeDef GPIO_InitStruct; + + // LED + GPIO_InitStruct.Pin = LED_PIN; + GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; + GPIO_InitStruct.Pull = GPIO_PULLUP; + HAL_GPIO_Init(LED_PORT, &GPIO_InitStruct); + + // Button + GPIO_InitStruct.Pin = BUTTON_PIN; + GPIO_InitStruct.Mode = GPIO_MODE_INPUT; + GPIO_InitStruct.Pull = GPIO_NOPULL; + HAL_GPIO_Init(BUTTON_PORT, &GPIO_InitStruct); + + // IOSV bit MUST be set to access GPIO port G[2:15] */ + __HAL_RCC_PWR_CLK_ENABLE(); + HAL_PWREx_EnableVddIO2(); + + // Uart + GPIO_InitStruct.Pin = UART_TX_PIN | UART_RX_PIN; + GPIO_InitStruct.Mode = GPIO_MODE_AF_PP; + GPIO_InitStruct.Pull = GPIO_PULLUP; + GPIO_InitStruct.Alternate = UART_GPIO_AF; + HAL_GPIO_Init(UART_GPIO_PORT, &GPIO_InitStruct); + + UartHandle.Instance = UARTx; + UartHandle.Init.BaudRate = CFG_BOARD_UART_BAUDRATE; + UartHandle.Init.WordLength = UART_WORDLENGTH_8B; + UartHandle.Init.StopBits = UART_STOPBITS_1; + UartHandle.Init.Parity = UART_PARITY_NONE; + UartHandle.Init.HwFlowCtl = UART_HWCONTROL_NONE; + UartHandle.Init.Mode = UART_MODE_TX_RX; + UartHandle.Init.OverSampling = UART_OVERSAMPLING_16; + UartHandle.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE; + UartHandle.Init.ClockPrescaler = UART_PRESCALER_DIV1; + UartHandle.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT; + + HAL_UART_Init(&UartHandle); + + /* Configure USB FS GPIOs */ + /* Configure DM DP Pins */ + 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_HIGH; + 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); + + /* Configure ID pin */ + GPIO_InitStruct.Pin = GPIO_PIN_10; + GPIO_InitStruct.Mode = GPIO_MODE_AF_OD; + GPIO_InitStruct.Pull = GPIO_PULLUP; + GPIO_InitStruct.Alternate = GPIO_AF10_OTG_FS; + HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); + + /* Enable USB FS Clocks */ + __HAL_RCC_USB_OTG_FS_CLK_ENABLE(); + + // Enable VBUS sense (B device) via pin PA9 + USB_OTG_FS->GCCFG |= USB_OTG_GCCFG_VBDEN; +} + +//--------------------------------------------------------------------+ +// 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) +{ + HAL_UART_Transmit(&UartHandle, (uint8_t*) buf, len, 0xffff); + return len; +} + +#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) +{ + +} |