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Fixed bug 581. 

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@7893 35acf78f-673a-0410-8e92-d51de3d6d3f4
master
Giovanni Di Sirio 2015-04-14 18:31:15 +00:00
parent 6c6132abbb
commit 1dab4fb6ae
2 changed files with 20 additions and 12 deletions
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28
os/hal/ports/STM32/LLD/I2Cv2/i2c_lld.c
View File

@ -141,16 +141,20 @@ static void i2c_lld_serve_interrupt(I2CDriver *i2cp, uint32_t isr) {
/* Starts the read operation.*/
dp->CR2 |= I2C_CR2_RD_WRN;
dp->CR2 |= I2C_CR2_START;
return;
}
else {
/* Nothing to receive - send STOP immediately.*/
dp->CR2 |= I2C_CR2_STOP;
}
/* Nothing to receive - send STOP immediately.*/
dp->CR2 |= I2C_CR2_STOP;
}
if (isr & I2C_ISR_NACKF) {
/* Starts a STOP sequence immediately on error.*/
dp->CR2 |= I2C_CR2_STOP;
/* Stops the associated DMA streams.*/
dmaStreamDisable(i2cp->dmatx);
dmaStreamDisable(i2cp->dmarx);
/* Error flag.*/
i2cp->errors |= I2C_ACK_FAILURE;
}
if (isr & I2C_ISR_STOPF) {
@ -158,12 +162,13 @@ static void i2c_lld_serve_interrupt(I2CDriver *i2cp, uint32_t isr) {
dmaStreamDisable(i2cp->dmatx);
dmaStreamDisable(i2cp->dmarx);
/* The wake up message depends on the presence of errors.*/
if (i2cp->errors)
/* Errors are propagated to the upper layer.*/
if (i2cp->errors) {
_i2c_wakeup_error_isr(i2cp);
else
_i2c_wakeup_isr(i2cp);
return;
}
}
_i2c_wakeup_isr(i2cp);
}
/**
@ -188,7 +193,6 @@ static void i2c_lld_serve_rx_end_irq(I2CDriver *i2cp, uint32_t flags) {
dmaStreamDisable(i2cp->dmarx);
dp->CR2 |= I2C_CR2_STOP;
_i2c_wakeup_isr(i2cp);
}
/**
@ -595,8 +599,9 @@ msg_t i2c_lld_master_receive_timeout(I2CDriver *i2cp, i2caddr_t addr,
/* If the system time went outside the allowed window then a timeout
condition is returned.*/
if (!osalOsIsTimeWithinX(osalOsGetSystemTimeX(), start, end))
if (!osalOsIsTimeWithinX(osalOsGetSystemTimeX(), start, end)) {
return MSG_TIMEOUT;
}
osalSysUnlock();
}
@ -685,8 +690,9 @@ msg_t i2c_lld_master_transmit_timeout(I2CDriver *i2cp, i2caddr_t addr,
/* If the system time went outside the allowed window then a timeout
condition is returned.*/
if (!osalOsIsTimeWithinX(osalOsGetSystemTimeX(), start, end))
if (!osalOsIsTimeWithinX(osalOsGetSystemTimeX(), start, end)) {
return MSG_TIMEOUT;
}
osalSysUnlock();
}

4
readme.txt
View File

@ -73,8 +73,10 @@
*** Releases and Change Log ***
*****************************************************************************
- HAL: Fixed STM32 I2Cv2 driver issue (bug 581).
*** 3.0.0p3 ***
- RT: Fixed tickless mode instability in RT (bug 577).
- RT: Fixed tickless mode instability in RT (bug 577).
*** 3.0.0p2 ***
- HAL: Fixed instances of RT API in HAL drivers (bug 574).