phs fan / Mbed 2 deprecated PHSShield_f405bridge

Hack the PHS Shield, serial bridge

Dependencies:   mbed

Fork of PHSShield_F405hack by phs fan

phs_f405.cpp@1:9cb4854ab263, 2015-07-01 (annotated)

Committer:
phsfan
Date:
Wed Jul 01 00:45:54 2015 +0000
Revision:
1:9cb4854ab263
test build

Who changed what in which revision?

UserRevisionLine numberNew contents of line
phsfan 1:9cb4854ab263 1 #include "phs_f405.h"
phsfan 1:9cb4854ab263 2 #include "stm32f4xx_hal.h"
phsfan 1:9cb4854ab263 3 #include <cstdarg>
phsfan 1:9cb4854ab263 4
phsfan 1:9cb4854ab263 5
phsfan 1:9cb4854ab263 6 void PhsReset::write (int value) {
phsfan 1:9cb4854ab263 7 __GPIOB_CLK_ENABLE();
phsfan 1:9cb4854ab263 8 if (value) {
phsfan 1:9cb4854ab263 9 GPIOB->MODER &= ~(3<<22); // PB_11 input
phsfan 1:9cb4854ab263 10 GPIOB->PUPDR = (GPIOB->PUPDR & ~(3<<22)) | (1<<22); // pullup
phsfan 1:9cb4854ab263 11 GPIOB->OTYPER &= ~(1<<11); // push pull
phsfan 1:9cb4854ab263 12 GPIOB->BSRRL = (1<<11); // reser=1
phsfan 1:9cb4854ab263 13 } else {
phsfan 1:9cb4854ab263 14 GPIOB->MODER = (GPIOB->MODER & ~(3<<22)) | (1<<22); // PB_11 output
phsfan 1:9cb4854ab263 15 GPIOB->PUPDR &= ~(3<<22); // pull none
phsfan 1:9cb4854ab263 16 GPIOB->OTYPER |= (1<<11); // open drain
phsfan 1:9cb4854ab263 17 GPIOB->BSRRH = (1<<11); // reser=0
phsfan 1:9cb4854ab263 18 }
phsfan 1:9cb4854ab263 19 }
phsfan 1:9cb4854ab263 20
phsfan 1:9cb4854ab263 21 int PhsReset::read () {
phsfan 1:9cb4854ab263 22 int status;
phsfan 1:9cb4854ab263 23 status = (GPIOB->ODR & (1<<11)) ? 1 : 0;
phsfan 1:9cb4854ab263 24 return status;
phsfan 1:9cb4854ab263 25 }
phsfan 1:9cb4854ab263 26
phsfan 1:9cb4854ab263 27
phsfan 1:9cb4854ab263 28 #define STRING_STACK_LIMIT 256
phsfan 1:9cb4854ab263 29 #define UART5_BASE (APB1PERIPH_BASE + 0x5000)
phsfan 1:9cb4854ab263 30 #define UART5 ((USART_TypeDef *) UART5_BASE)
phsfan 1:9cb4854ab263 31 #define RCC_APB1ENR_UART5EN ((uint32_t)0x00100000)
phsfan 1:9cb4854ab263 32 #define __UART5_CLK_ENABLE() (RCC->APB1ENR |= (RCC_APB1ENR_UART5EN))
phsfan 1:9cb4854ab263 33 #define GPIO_AF8_UART5 ((uint8_t)0x08)
phsfan 1:9cb4854ab263 34
phsfan 1:9cb4854ab263 35 ShieldSerial::ShieldSerial (int baud) {
phsfan 1:9cb4854ab263 36 __UART5_CLK_ENABLE();
phsfan 1:9cb4854ab263 37
phsfan 1:9cb4854ab263 38 UartHandle.Instance = (USART_TypeDef *)UART5;
phsfan 1:9cb4854ab263 39 UartHandle.Init.BaudRate = baud;
phsfan 1:9cb4854ab263 40 UartHandle.Init.WordLength = UART_WORDLENGTH_8B;
phsfan 1:9cb4854ab263 41 UartHandle.Init.StopBits = UART_STOPBITS_1;
phsfan 1:9cb4854ab263 42 UartHandle.Init.Parity = UART_PARITY_NONE;
phsfan 1:9cb4854ab263 43 UartHandle.Init.HwFlowCtl = UART_HWCONTROL_NONE;
phsfan 1:9cb4854ab263 44 UartHandle.Init.Mode = UART_MODE_TX_RX;
phsfan 1:9cb4854ab263 45 if (HAL_UART_Init(&UartHandle) != HAL_OK) {
phsfan 1:9cb4854ab263 46 mbed_die();
phsfan 1:9cb4854ab263 47 }
phsfan 1:9cb4854ab263 48
phsfan 1:9cb4854ab263 49 __GPIOC_CLK_ENABLE();
phsfan 1:9cb4854ab263 50 __GPIOD_CLK_ENABLE();
phsfan 1:9cb4854ab263 51 GPIO_InitTypeDef GPIO_InitStruct;
phsfan 1:9cb4854ab263 52 GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
phsfan 1:9cb4854ab263 53 GPIO_InitStruct.Pull = GPIO_PULLUP;
phsfan 1:9cb4854ab263 54 GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
phsfan 1:9cb4854ab263 55 GPIO_InitStruct.Pin = GPIO_PIN_12;
phsfan 1:9cb4854ab263 56 GPIO_InitStruct.Alternate = GPIO_AF8_UART5;
phsfan 1:9cb4854ab263 57 HAL_GPIO_Init(GPIOC, &GPIO_InitStruct); // TX
phsfan 1:9cb4854ab263 58 GPIO_InitStruct.Pin = GPIO_PIN_2;
phsfan 1:9cb4854ab263 59 GPIO_InitStruct.Alternate = GPIO_AF8_UART5;
phsfan 1:9cb4854ab263 60 HAL_GPIO_Init(GPIOD, &GPIO_InitStruct); // RX
phsfan 1:9cb4854ab263 61 }
phsfan 1:9cb4854ab263 62
phsfan 1:9cb4854ab263 63 int ShieldSerial::getc () {
phsfan 1:9cb4854ab263 64 while (!readable());
phsfan 1:9cb4854ab263 65 return (int)(UartHandle.Instance->DR & 0x1FF);
phsfan 1:9cb4854ab263 66 }
phsfan 1:9cb4854ab263 67
phsfan 1:9cb4854ab263 68 int ShieldSerial::putc (int c) {
phsfan 1:9cb4854ab263 69 while (!writeable());
phsfan 1:9cb4854ab263 70 UartHandle.Instance->DR = (uint32_t)(c & 0x1FF);
phsfan 1:9cb4854ab263 71 return 0;
phsfan 1:9cb4854ab263 72 }
phsfan 1:9cb4854ab263 73
phsfan 1:9cb4854ab263 74 int ShieldSerial::readable () {
phsfan 1:9cb4854ab263 75 int status;
phsfan 1:9cb4854ab263 76 status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) ? 1 : 0);
phsfan 1:9cb4854ab263 77 return status;
phsfan 1:9cb4854ab263 78 }
phsfan 1:9cb4854ab263 79
phsfan 1:9cb4854ab263 80 int ShieldSerial::writeable () {
phsfan 1:9cb4854ab263 81 int status;
phsfan 1:9cb4854ab263 82 status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TXE) != RESET) ? 1 : 0);
phsfan 1:9cb4854ab263 83 return status;
phsfan 1:9cb4854ab263 84 }