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This commit is contained in:
Andreas Mieke 2018-04-03 17:18:28 +02:00
parent d109bae8d7
commit 9a18bd88f0
22 changed files with 286 additions and 122 deletions
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36
Mieke/SW/MT/interface_uart.c
View file

@ -2,6 +2,7 @@
void USART_SendString(USART_TypeDef *USARTx, char *str)
{
// Sends a string, character for character, over the specified UART
while (*str) {
while (USART_GetFlagStatus(USARTx, USART_FLAG_TXE) == RESET);
USART_SendData(USARTx, *str++);
@ -10,35 +11,44 @@ void USART_SendString(USART_TypeDef *USARTx, char *str)
void init_all(void)
{
// Enable all GPIO and USART clocks needed for USART1, 2 and 3
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, ENABLE);
// Create gpio struct and fill it with defaults
GPIO_InitTypeDef gpio;
GPIO_StructInit(&gpio);
// Set PA9 to alternate function push pull (Tx)
gpio.GPIO_Mode = GPIO_Mode_AF_PP;
gpio.GPIO_Pin = GPIO_Pin_9;
GPIO_Init(GPIOA, &gpio);
// Same for PA2
gpio.GPIO_Pin = GPIO_Pin_2;
GPIO_Init(GPIOA, &gpio);
// Same for PB10
gpio.GPIO_Pin = GPIO_Pin_10;
GPIO_Init(GPIOB, &gpio);
// Set PA10 to input floating (Rx)
gpio.GPIO_Mode = GPIO_Mode_IN_FLOATING;
gpio.GPIO_Pin = GPIO_Pin_10;
GPIO_Init(GPIOA, &gpio);
// Same for PA3
gpio.GPIO_Pin = GPIO_Pin_3;
GPIO_Init(GPIOA, &gpio);
// Same for PB11
gpio.GPIO_Pin = GPIO_Pin_11;
GPIO_Init(GPIOB, &gpio);
// Create usart struct and set baud rate to 115 200, init all three USARTs with this baud rate
USART_InitTypeDef usart;
USART_StructInit(&usart);
usart.USART_BaudRate = 115200;
@ -46,16 +56,19 @@ void init_all(void)
USART_Init(USART2, &usart);
USART_Init(USART3, &usart);
// Enable USART clocks
USART_ClockInitTypeDef usartclock;
USART_ClockStructInit(&usartclock);
USART_ClockInit(USART1, &usartclock);
USART_ClockInit(USART2, &usartclock);
USART_ClockInit(USART3, &usartclock);
// Enable the USARTs
USART_Cmd(USART1, ENABLE);
USART_Cmd(USART2, ENABLE);
USART_Cmd(USART3, ENABLE);
// Enable the SysTick with T = 1 ms
RCC_ClocksTypeDef clocks;
RCC_GetClocksFreq(&clocks);
SysTick_Config(clocks.HCLK_Frequency/1000 - 1); // SysTick T=1ms
@ -63,6 +76,7 @@ void init_all(void)
void send_welcome(void)
{
// Send a welcome message to all three USARTs
USART_SendString(USART1, "\x1B[2J\x1B[0;0HManufacturing test software, press space...\r\n");
USART_SendString(USART2, "\x1B[2J\x1B[0;0HManufacturing test software, press space...\r\n");
USART_SendString(USART3, "\x1B[2J\x1B[0;0HManufacturing test software, press space...\r\n");
@ -71,10 +85,14 @@ void send_welcome(void)
unsigned int wait_for_start(void)
{
uint8_t data;
// Runs until space has been pressed on one UART
for(;;) {
// Checks if USART1 receive register is not empty
if (USART_GetFlagStatus(USART1, USART_FLAG_RXNE) == SET) {
data = USART_ReceiveData(USART1);
// Checks if space has been pressed
if (data == ' ') {
// Disable the other UARTs and return 1 as this is the used UART
USART_Cmd(USART2, DISABLE);
USART_Cmd(USART3, DISABLE);
USART_DeInit(USART2);
@ -85,9 +103,12 @@ unsigned int wait_for_start(void)
USART_DeInit(USART1);
}
}
// Checks if USART2 receive register is not empty
if (USART_GetFlagStatus(USART2, USART_FLAG_RXNE) == SET) {
data = USART_ReceiveData(USART2);
// Checks if space has been pressed
if (data == ' ') {
// Disable the other UARTs and return 2 as this is the used UART
USART_Cmd(USART1, DISABLE);
USART_Cmd(USART3, DISABLE);
USART_DeInit(USART1);
@ -98,9 +119,12 @@ unsigned int wait_for_start(void)
USART_DeInit(USART2);
}
}
// Checks if USART3 receive register is not empty
if (USART_GetFlagStatus(USART3, USART_FLAG_RXNE) == SET) {
data = USART_ReceiveData(USART3);
// Checks if space has been pressed
if (data == ' ') {
// Disable the other UARTs and return 3 as this is the used UART
USART_Cmd(USART1, DISABLE);
USART_Cmd(USART2, DISABLE);
USART_DeInit(USART1);
@ -117,11 +141,15 @@ unsigned int wait_for_start(void)
unsigned int wait_for_test(USART_TypeDef *USARTx)
{
int data;
// Blocks until something is pressed
for(;;)
{
// Checks if receive register is not empty
if (USART_GetFlagStatus(USARTx, USART_FLAG_RXNE) == SET) {
data = (int)USART_ReceiveData(USARTx);
if ((data > 0x09 && data <= 0x30) || data > 0x39) return 1;
// If data is out of range return 1 (no test)
if ((data > 0x09 && data <= 0x30) || data > 0x39) return 1;
// Else return the correct test id
return (data >= 0x30) ? data - 0x30 : data;
}
}
@ -130,10 +158,14 @@ unsigned int wait_for_test(USART_TypeDef *USARTx)
unsigned int get_test(USART_TypeDef *USARTx)
{
int data;
// Checks if receive register is not empty
if (USART_GetFlagStatus(USARTx, USART_FLAG_RXNE) == SET) {
data = (int)USART_ReceiveData(USARTx);
if ((data > 0x09 && data <= 0x30) || data > 0x39) return 1;
// If data is out of range return 1 (no test)
if ((data > 0x09 && data <= 0x30) || data > 0x39) return 1;
// Else return the correct test id
return (data >= 0x30) ? data - 0x30 : data;
}
// If nothing has been sent to the UART, return 0 (test not changed)
return 0;
}