Diff: phs_f405.cpp

Revision:

1:9cb4854ab263

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/phs_f405.cpp	Wed Jul 01 00:45:54 2015 +0000
@@ -0,0 +1,84 @@
+#include "phs_f405.h"
+#include "stm32f4xx_hal.h"
+#include <cstdarg>
+
+
+void PhsReset::write (int value) {
+    __GPIOB_CLK_ENABLE();
+    if (value) {
+        GPIOB->MODER &= ~(3<<22); // PB_11 input
+        GPIOB->PUPDR = (GPIOB->PUPDR & ~(3<<22)) | (1<<22); // pullup
+        GPIOB->OTYPER &= ~(1<<11); // push pull
+        GPIOB->BSRRL = (1<<11); // reser=1
+    } else {
+        GPIOB->MODER = (GPIOB->MODER & ~(3<<22)) | (1<<22); // PB_11 output
+        GPIOB->PUPDR &= ~(3<<22); // pull none
+        GPIOB->OTYPER |= (1<<11); // open drain
+        GPIOB->BSRRH = (1<<11); // reser=0
+    }
+}
+
+int PhsReset::read () {
+    int status;
+    status = (GPIOB->ODR & (1<<11)) ? 1 : 0;
+    return status;
+}
+
+
+#define STRING_STACK_LIMIT 256
+#define UART5_BASE            (APB1PERIPH_BASE + 0x5000)
+#define UART5               ((USART_TypeDef *) UART5_BASE)
+#define  RCC_APB1ENR_UART5EN                 ((uint32_t)0x00100000)
+#define __UART5_CLK_ENABLE()   (RCC->APB1ENR |= (RCC_APB1ENR_UART5EN))
+#define GPIO_AF8_UART5         ((uint8_t)0x08) 
+
+ShieldSerial::ShieldSerial (int baud) {
+    __UART5_CLK_ENABLE();
+
+    UartHandle.Instance = (USART_TypeDef *)UART5;
+    UartHandle.Init.BaudRate   = baud;
+    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;
+    if (HAL_UART_Init(&UartHandle) != HAL_OK) {
+        mbed_die();
+    }
+
+    __GPIOC_CLK_ENABLE();
+    __GPIOD_CLK_ENABLE();
+    GPIO_InitTypeDef  GPIO_InitStruct;
+    GPIO_InitStruct.Mode      = GPIO_MODE_AF_PP;
+    GPIO_InitStruct.Pull      = GPIO_PULLUP;
+    GPIO_InitStruct.Speed     = GPIO_SPEED_FAST;
+    GPIO_InitStruct.Pin       = GPIO_PIN_12;
+    GPIO_InitStruct.Alternate = GPIO_AF8_UART5;
+    HAL_GPIO_Init(GPIOC, &GPIO_InitStruct); // TX
+    GPIO_InitStruct.Pin = GPIO_PIN_2;
+    GPIO_InitStruct.Alternate = GPIO_AF8_UART5;
+    HAL_GPIO_Init(GPIOD, &GPIO_InitStruct); // RX
+}
+
+int ShieldSerial::getc () {
+    while (!readable());
+    return (int)(UartHandle.Instance->DR & 0x1FF);
+}
+
+int ShieldSerial::putc (int c) {
+    while (!writeable());
+    UartHandle.Instance->DR = (uint32_t)(c & 0x1FF);
+    return 0;
+}
+
+int ShieldSerial::readable () {
+    int status;
+    status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) ? 1 : 0);
+    return status;
+}
+
+int ShieldSerial::writeable () {
+    int status;
+    status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TXE) != RESET) ? 1 : 0);
+    return status;
+}