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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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33
Mieke/SW/ODD/io.c
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@ -6,104 +6,125 @@ uint8_t usart3_inited = 0;
void i2c1_init(void)
{
// If I2C1 is already inited, do nothing
if (i2c1_inited == 1) {
return;
}
// Enable GPIOB and I2C1 clocks
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1, ENABLE);
// Create gpio struct and fill default values
GPIO_InitTypeDef gpio;
GPIO_StructInit(&gpio);
// SCL
// Set PB6 to alternate function push pull (SCL)
gpio.GPIO_Mode = GPIO_Mode_AF_PP;
gpio.GPIO_Pin = GPIO_Pin_6;
GPIO_Init(GPIOB, &gpio);
// SDA
// Set PB7 to alternate function open drain (SDA)
gpio.GPIO_Mode = GPIO_Mode_AF_OD;
gpio.GPIO_Pin = GPIO_Pin_7;
GPIO_Init(GPIOB, &gpio);
// Set I2C1 clock to 400 kHz
I2C_InitTypeDef i2c;
I2C_StructInit(&i2c);
i2c.I2C_ClockSpeed = 400000;
I2C_Init(I2C1, &i2c);
// Enable I2C1
I2C_Cmd(I2C1, ENABLE);
i2c1_inited = 1;
}
void usart1_init(void)
{
// If USART1 is inited, do nothing
if (usart1_inited == 1) {
return;
}
// Enable GPIOA and USART1 clocks
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
// Create gpio struct and fill default values
GPIO_InitTypeDef gpio;
GPIO_StructInit(&gpio);
// TxD
// Set PA9 to alternate function push pull (TxD)
gpio.GPIO_Mode = GPIO_Mode_AF_PP;
gpio.GPIO_Pin = GPIO_Pin_9;
GPIO_Init(GPIOA, &gpio);
// RxD
// Set PA10 to input floating (RxD)
gpio.GPIO_Mode = GPIO_Mode_IN_FLOATING;
gpio.GPIO_Pin = GPIO_Pin_10;
GPIO_Init(GPIOA, &gpio);
// Set USART1 clock to 115 200 baud
USART_InitTypeDef usart;
USART_StructInit(&usart);
usart.USART_BaudRate = 115200;
USART_Init(USART1, &usart);
// Init USART1 clocks
USART_ClockInitTypeDef usartclock;
USART_ClockStructInit(&usartclock);
USART_ClockInit(USART1, &usartclock);
// Enable USART1
USART_Cmd(USART1, ENABLE);
usart1_inited = 1;
}
void usart3_init(void)
{
// If USART3 is inited, do nothing
if (usart3_inited == 1) {
return;
}
// Enable GPIOB and USART3 clocks
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, ENABLE);
// Create gpio struct and fill default values
GPIO_InitTypeDef gpio;
GPIO_StructInit(&gpio);
// TxD
// Set PB10 to alternate function push pull (TxD)
gpio.GPIO_Mode = GPIO_Mode_AF_PP;
gpio.GPIO_Pin = GPIO_Pin_10;
GPIO_Init(GPIOB, &gpio);
// RxD
// Set PB11 to input floating (RxD)
gpio.GPIO_Mode = GPIO_Mode_IN_FLOATING;
gpio.GPIO_Pin = GPIO_Pin_11;
GPIO_Init(GPIOB, &gpio);
// Set USART3 clock to 115 200 baud
USART_InitTypeDef usart;
USART_StructInit(&usart);
usart.USART_BaudRate = 115200;
USART_Init(USART3, &usart);
// Init USART3 clocks
USART_ClockInitTypeDef usartclock;
USART_ClockStructInit(&usartclock);
USART_ClockInit(USART3, &usartclock);
// Enable USART3
USART_Cmd(USART3, ENABLE);
usart3_inited = 1;
}
void USART_SendString(USART_TypeDef *USARTx, char *str)
{
// Send a string, byte by byte over the specified USART
while (*str) {
while (USART_GetFlagStatus(USARTx, USART_FLAG_TXE) == RESET);
USART_SendData(USARTx, *str++);