v/maiana
1
0
Fork 0
mirror of https://github.com/peterantypas/maiana.git synced 2025-05-28 05:10:40 -07:00
Code Issues Projects Releases Wiki Activity

Corrected UART

Browse Source
This commit is contained in:
Peter Antypas 2016-06-14 17:58:16 -07:00
parent 72d91f75af
commit db0a282699
1 changed files with 16 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
bootloader/src/DataTerminal.cpp
View File

@ -28,18 +28,17 @@ void DataTerminal::init()
GPIO_InitTypeDef GPIO_InitStruct;
NVIC_InitTypeDef NVIC_InitStruct;
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE); // For USART2
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE);
GPIO_PinAFConfig(GPIOA, GPIO_PinSource2, GPIO_AF_7);
GPIO_PinAFConfig(GPIOA, GPIO_PinSource3, GPIO_AF_7);
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE); // For USART3, LEDs
GPIO_PinAFConfig(GPIOB, GPIO_PinSource10, GPIO_AF_7);
GPIO_PinAFConfig(GPIOB, GPIO_PinSource11, GPIO_AF_7);
// Initialize pins as alternative function 7 (USART)
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_2 | GPIO_Pin_3;
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_10 | GPIO_Pin_11;
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStruct.GPIO_OType = GPIO_OType_PP;
GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_InitStruct.GPIO_Speed = GPIO_Speed_Level_1;
GPIO_Init(GPIOA, &GPIO_InitStruct);
GPIO_Init(GPIOB, &GPIO_InitStruct);
// These two pins are LEDs. Just turn them on to indicate we have entered "update" mode.
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_14 | GPIO_Pin_15;
@ -49,24 +48,24 @@ void DataTerminal::init()
//GPIO_SetBits(GPIOB, GPIO_Pin_14);
//GPIO_SetBits(GPIOB, GPIO_Pin_15);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, ENABLE);
USART_InitTypeDef USART_InitStructure;
USART_StructInit(&USART_InitStructure);
USART_InitStructure.USART_BaudRate = 38400;
USART_Init(USART2, &USART_InitStructure);
USART_Init(USART3, &USART_InitStructure);
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
USART_InitStructure.USART_Parity = USART_Parity_No;
USART_InitStructure.USART_StopBits = USART_StopBits_1;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
USART_Cmd(USART2, ENABLE);
USART_Cmd(USART3, ENABLE);
USART_ITConfig(USART2, USART_IT_RXNE, ENABLE);
NVIC_InitStruct.NVIC_IRQChannel = USART2_IRQn;
USART_ITConfig(USART3, USART_IT_RXNE, ENABLE);
NVIC_InitStruct.NVIC_IRQChannel = USART3_IRQn;
NVIC_InitStruct.NVIC_IRQChannelCmd = ENABLE;
NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority = 1;
NVIC_Init(&NVIC_InitStruct);
@ -199,6 +198,7 @@ void DataTerminal::fail()
mState = STATE_WAITING;
GPIO_ResetBits(GPIOB, GPIO_Pin_14|GPIO_Pin_15);
FLASH_Lock();
trace_printf("Resetting\n");
writeCmd(NACK);
}
@ -269,12 +269,12 @@ void write_char(USART_TypeDef* USARTx, char c)
void DataTerminal::write(const char* s)
{
for ( int i = 0; s[i] != 0; ++i )
write_char(USART2, s[i]);
write_char(USART3, s[i]);
}
void DataTerminal::writeCmd(uint8_t cmd)
{
write_char(USART2, (char)cmd);
write_char(USART3, (char)cmd);
}
void DataTerminal::clearScreen()
@ -291,10 +291,10 @@ void DataTerminal::_write(const char *s)
extern "C" {
void USART2_IRQHandler(void)
void USART3_IRQHandler(void)
{
if ( USART_GetITStatus(USART2, USART_IT_RXNE) ) {
uint8_t byte = (uint8_t)USART2->RDR;
if ( USART_GetITStatus(USART3, USART_IT_RXNE) ) {
uint8_t byte = (uint8_t)USART3->RDR;
DataTerminal::instance().processByte(byte);
}
}