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Fixed bug #442. 

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@6503 35acf78f-673a-0410-8e92-d51de3d6d3f4
master
gdisirio 2013-11-22 10:19:47 +00:00
parent 10fcc2b9f6
commit 9d19282875
3 changed files with 18 additions and 11 deletions
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23
os/hal/platforms/STM32/USARTv1/serial_lld.c
View File

@ -143,9 +143,7 @@ static void set_error(SerialDriver *sdp, uint16_t sr) {
sts |= SD_FRAMING_ERROR;
if (sr & USART_SR_NE)
sts |= SD_NOISE_ERROR;
chSysLockFromIsr();
chnAddFlagsI(sdp, sts);
chSysUnlockFromIsr();
}
/**
@ -156,12 +154,8 @@ static void set_error(SerialDriver *sdp, uint16_t sr) {
static void serve_interrupt(SerialDriver *sdp) {
USART_TypeDef *u = sdp->usart;
uint16_t cr1 = u->CR1;
uint16_t sr = u->SR; /* SR reset step 1.*/
uint16_t dr = u->DR; /* SR reset step 2.*/
uint16_t sr = u->SR;
/* Error condition detection.*/
if (sr & (USART_SR_ORE | USART_SR_NE | USART_SR_FE | USART_SR_PE))
set_error(sdp, sr);
/* Special case, LIN break detection.*/
if (sr & USART_SR_LBD) {
chSysLockFromIsr();
@ -169,12 +163,18 @@ static void serve_interrupt(SerialDriver *sdp) {
chSysUnlockFromIsr();
u->SR &= ~USART_SR_LBD;
}
/* Data available.*/
if (sr & USART_SR_RXNE) {
chSysLockFromIsr();
sdIncomingDataI(sdp, (uint8_t)dr);
chSysUnlockFromIsr();
chSysLockFromIsr();
while (sr & USART_SR_RXNE) {
/* Error condition detection.*/
if (sr & (USART_SR_ORE | USART_SR_NE | USART_SR_FE | USART_SR_PE))
set_error(sdp, sr);
sdIncomingDataI(sdp, u->DR);
sr = u->SR;
}
chSysUnlockFromIsr();
/* Transmission buffer empty.*/
if ((cr1 & USART_CR1_TXEIE) && (sr & USART_SR_TXE)) {
msg_t b;
@ -188,6 +188,7 @@ static void serve_interrupt(SerialDriver *sdp) {
u->DR = b;
chSysUnlockFromIsr();
}
/* Physical transmission end.*/
if (sr & USART_SR_TC) {
chSysLockFromIsr();

4
os/hal/platforms/STM32/USARTv2/serial_lld.c
View File

@ -156,18 +156,21 @@ static void serve_interrupt(SerialDriver *sdp) {
/* Error condition detection.*/
if (isr & (USART_ISR_ORE | USART_ISR_NE | USART_ISR_FE | USART_ISR_PE))
set_error(sdp, isr);
/* Special case, LIN break detection.*/
if (isr & USART_ISR_LBD) {
chSysLockFromIsr();
chnAddFlagsI(sdp, SD_BREAK_DETECTED);
chSysUnlockFromIsr();
}
/* Data available.*/
if (isr & USART_ISR_RXNE) {
chSysLockFromIsr();
sdIncomingDataI(sdp, (uint8_t)u->RDR);
chSysUnlockFromIsr();
}
/* Transmission buffer empty.*/
if ((cr1 & USART_CR1_TXEIE) && (isr & USART_ISR_TXE)) {
msg_t b;
@ -181,6 +184,7 @@ static void serve_interrupt(SerialDriver *sdp) {
u->TDR = b;
chSysUnlockFromIsr();
}
/* Physical transmission end.*/
if (isr & USART_ISR_TC) {
chSysLockFromIsr();

2
readme.txt
View File

@ -89,6 +89,8 @@
*****************************************************************************
*** 2.7.0 ***
- FIX: Fixed lost incoming characters in STM32 USARTv1 driver (bug #442)
(backported to 2.4.6 and 2.6.2).
- FIX: Fixed UART4/5-related bugs in STM32 USARTv1 UART driver (bug #440)
(backported to 2.6.2).
- FIX: Fixed race condition in STM32 DMA interrupt (bug #439)(backported