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257 lines
8.4 KiB
257 lines
8.4 KiB
/**
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******************************************************************************
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* File Name : main.c
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* Description : Main program body
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******************************************************************************
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*
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* COPYRIGHT(c) 2015 STMicroelectronics
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. Neither the name of STMicroelectronics nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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******************************************************************************
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*
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* Modifications by Robert Fisk
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "stm32f4xx_hal.h"
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#include "usb_host.h"
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#include "board_config.h"
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#include "downstream_statemachine.h"
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#include "downstream_spi.h"
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#include "led.h"
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#include "interrupts.h"
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/* Private function prototypes -----------------------------------------------*/
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void SystemClock_Config(void);
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static void GPIO_Init(void);
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void DisableFlashWrites(void);
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void CheckFirmwareMatchesHardware(void);
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int main(void)
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{
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uint32_t iterationCount = 0;
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//First things first!
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DisableFlashWrites();
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CheckFirmwareMatchesHardware();
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/* Configure the system clock */
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SystemClock_Config();
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/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
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HAL_Init();
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/* Initialize all configured peripherals */
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GPIO_Init();
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LED_Init();
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USB_Host_Init();
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Downstream_InitStateMachine();
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while (1)
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{
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USB_Host_Process();
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Downstream_SPIProcess();
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Downstream_PacketProcessor_CheckNotifyDisconnectReply();
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//Some USB host state transitions take 3 iterations to fully apply.
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//We'll be generous and give it 5 before sleeping.
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iterationCount++;
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if (iterationCount > 4)
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{
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iterationCount = 0;
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__WFI(); //sleep time!
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}
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}
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}
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void DisableFlashWrites(void)
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{
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//Disable flash writes until the next reset
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//This will cause a bus fault interrupt, so allow one now.
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EnableOneBusFault();
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FLASH->KEYR = 999;
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//Confirm that flash cannot be unlocked
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//This unlock attempt will also cause a bus fault.
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EnableOneBusFault();
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if ((FLASH->CR & FLASH_CR_LOCK) == 0) while(1);
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FLASH->KEYR = FLASH_KEY1;
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FLASH->KEYR = FLASH_KEY2;
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if ((FLASH->CR & FLASH_CR_LOCK) == 0) while(1);
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}
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void CheckFirmwareMatchesHardware(void)
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{
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//Check we are running on the expected hardware:
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//STM32F401RC on USG v1.0 beta
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GPIO_InitTypeDef GPIO_InitStruct;
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if ((*(uint32_t*)DBGMCU_BASE & DBGMCU_IDCODE_DEV_ID) == DBGMCU_IDCODE_DEV_ID_401xB_xC)
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{
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//Read in board revision and ID on port C
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__HAL_RCC_GPIOC_CLK_ENABLE();
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GPIO_InitStruct.Pin = BOARD_REV_PIN_MASK | BOARD_ID_PIN_MASK;
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GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
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GPIO_InitStruct.Pull = GPIO_PULLUP;
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GPIO_InitStruct.Speed = GPIO_SPEED_LOW;
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GPIO_InitStruct.Alternate = 0;
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HAL_GPIO_Init(BOARD_REV_ID_PORT, &GPIO_InitStruct);
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//Correct board revision?
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if ((BOARD_REV_ID_PORT->IDR & BOARD_REV_PIN_MASK) == BOARD_REV_1_0_BETA)
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{
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//Correct board ID: downstream?
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if (!(BOARD_REV_ID_PORT->IDR & BOARD_ID_PIN_MASK))
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{
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return;
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}
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}
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}
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//This is not the hardware we expected, so turn on our fault LED(s) and die in a heap.
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GPIO_InitStruct.Pin = FAULT_LED_PIN | H405_FAULT_LED_PIN;
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GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
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GPIO_InitStruct.Pull = GPIO_NOPULL;
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HAL_GPIO_Init(FAULT_LED_PORT, &GPIO_InitStruct);
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FAULT_LED_ON;
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H405_FAULT_LED_ON;
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while (1);
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}
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/** System Clock Configuration
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*/
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void SystemClock_Config(void)
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{
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RCC_OscInitTypeDef RCC_OscInitStruct;
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RCC_ClkInitTypeDef RCC_ClkInitStruct;
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__PWR_CLK_ENABLE();
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__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE2);
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RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
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RCC_OscInitStruct.HSEState = RCC_HSE_ON;
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RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
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RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
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RCC_OscInitStruct.PLL.PLLM = 8;
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RCC_OscInitStruct.PLL.PLLN = 336;
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RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV4;
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RCC_OscInitStruct.PLL.PLLQ = 7;
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if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) while (1);
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RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_SYSCLK |
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RCC_CLOCKTYPE_HCLK |
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RCC_CLOCKTYPE_PCLK1 |
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RCC_CLOCKTYPE_PCLK2;
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RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
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RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
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RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
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RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
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if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK) while (1);
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HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);
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}
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void GPIO_Init(void)
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{
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GPIO_InitTypeDef GPIO_InitStruct;
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/* GPIO Ports Clock Enable */
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//__GPIOH_CLK_ENABLE();
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__HAL_RCC_GPIOA_CLK_ENABLE();
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__HAL_RCC_GPIOB_CLK_ENABLE();
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__HAL_RCC_GPIOC_CLK_ENABLE();
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__HAL_RCC_GPIOD_CLK_ENABLE();
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//Bulk initialise all ports as inputs with pullups active,
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//excluding JTAG pins which must remain as AF0!
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GPIO_InitStruct.Pin = (GPIO_PIN_All & ~(PA_JTMS | PA_JTCK | PA_JTDI));
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GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
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GPIO_InitStruct.Pull = GPIO_PULLUP;
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GPIO_InitStruct.Speed = GPIO_SPEED_LOW;
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GPIO_InitStruct.Alternate = 0;
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HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
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GPIO_InitStruct.Pin = (GPIO_PIN_All & ~(PB_JTDO | PB_NJTRST));
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HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
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GPIO_InitStruct.Pin = GPIO_PIN_All;
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HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
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HAL_GPIO_Init(GPIOD, &GPIO_InitStruct);
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//Fault LED is output
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GPIO_InitStruct.Pin = FAULT_LED_PIN;
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GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
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GPIO_InitStruct.Pull = GPIO_NOPULL;
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HAL_GPIO_Init(FAULT_LED_PORT, &GPIO_InitStruct);
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FAULT_LED_OFF;
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// //SPI_INT_ACTIVE indicator
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// GPIO_InitStruct.Pin = INT_ACTIVE_PIN;
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// HAL_GPIO_Init(INT_ACTIVE_PORT, &GPIO_InitStruct);
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// INT_ACTIVE_OFF;
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}
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#ifdef USE_FULL_ASSERT
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/**
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* @brief Reports the name of the source file and the source line number
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* where the assert_param error has occurred.
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* @param file: pointer to the source file name
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* @param line: assert_param error line source number
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* @retval None
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*/
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void assert_failed(uint8_t* file, uint32_t line)
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{
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/* USER CODE BEGIN 6 */
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/* User can add his own implementation to report the file name and line number,
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ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
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/* USER CODE END 6 */
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}
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#endif
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/**
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* @}
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*/
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/**
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* @}
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*/
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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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