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Fixed bug 3607549. I2C malfunction after fixing bug 3607518. 

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@5408 35acf78f-673a-0410-8e92-d51de3d6d3f4
This commit is contained in:
barthess 2013-03-10 21:26:04 +00:00
parent 7f9f396a77
commit 444d818b22
3 changed files with 27 additions and 12 deletions
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30
os/hal/platforms/STM32/I2Cv1/i2c_lld.c
View File

@ -575,9 +575,14 @@ void i2c_lld_init(void) {
void i2c_lld_start(I2CDriver *i2cp) {
I2C_TypeDef *dp = i2cp->i2c;
i2cp->dmamode = STM32_DMA_CR_PSIZE_BYTE | STM32_DMA_CR_MSIZE_BYTE |
STM32_DMA_CR_MINC | STM32_DMA_CR_DMEIE | STM32_DMA_CR_TEIE |
STM32_DMA_CR_TCIE;
i2cp->txdmamode = STM32_DMA_CR_PSIZE_BYTE | STM32_DMA_CR_MSIZE_BYTE |
STM32_DMA_CR_MINC | STM32_DMA_CR_DMEIE |
STM32_DMA_CR_TEIE | STM32_DMA_CR_TCIE |
STM32_DMA_CR_DIR_M2P;
i2cp->rxdmamode = STM32_DMA_CR_PSIZE_BYTE | STM32_DMA_CR_MSIZE_BYTE |
STM32_DMA_CR_MINC | STM32_DMA_CR_DMEIE |
STM32_DMA_CR_TEIE | STM32_DMA_CR_TCIE |
STM32_DMA_CR_DIR_P2M;
/* If in stopped state then enables the I2C and DMA clocks.*/
if (i2cp->state == I2C_STOP) {
@ -603,7 +608,9 @@ void i2c_lld_start(I2CDriver *i2cp) {
nvicEnableVector(I2C1_ER_IRQn,
CORTEX_PRIORITY_MASK(STM32_I2C_I2C1_IRQ_PRIORITY));
i2cp->dmamode |= STM32_DMA_CR_CHSEL(I2C1_RX_DMA_CHANNEL) |
i2cp->rxdmamode |= STM32_DMA_CR_CHSEL(I2C1_RX_DMA_CHANNEL) |
STM32_DMA_CR_PL(STM32_I2C_I2C1_DMA_PRIORITY);
i2cp->txdmamode |= STM32_DMA_CR_CHSEL(I2C1_TX_DMA_CHANNEL) |
STM32_DMA_CR_PL(STM32_I2C_I2C1_DMA_PRIORITY);
}
#endif /* STM32_I2C_USE_I2C1 */
@ -629,7 +636,9 @@ void i2c_lld_start(I2CDriver *i2cp) {
nvicEnableVector(I2C2_ER_IRQn,
CORTEX_PRIORITY_MASK(STM32_I2C_I2C2_IRQ_PRIORITY));
i2cp->dmamode |= STM32_DMA_CR_CHSEL(I2C2_RX_DMA_CHANNEL) |
i2cp->rxdmamode |= STM32_DMA_CR_CHSEL(I2C2_RX_DMA_CHANNEL) |
STM32_DMA_CR_PL(STM32_I2C_I2C2_DMA_PRIORITY);
i2cp->txdmamode |= STM32_DMA_CR_CHSEL(I2C2_TX_DMA_CHANNEL) |
STM32_DMA_CR_PL(STM32_I2C_I2C2_DMA_PRIORITY);
}
#endif /* STM32_I2C_USE_I2C2 */
@ -655,16 +664,14 @@ void i2c_lld_start(I2CDriver *i2cp) {
nvicEnableVector(I2C3_ER_IRQn,
CORTEX_PRIORITY_MASK(STM32_I2C_I2C3_IRQ_PRIORITY));
i2cp->dmamode |= STM32_DMA_CR_CHSEL(I2C3_RX_DMA_CHANNEL) |
i2cp->rxdmamode |= STM32_DMA_CR_CHSEL(I2C3_RX_DMA_CHANNEL) |
STM32_DMA_CR_PL(STM32_I2C_I2C3_DMA_PRIORITY);
i2cp->txdmamode |= STM32_DMA_CR_CHSEL(I2C3_TX_DMA_CHANNEL) |
STM32_DMA_CR_PL(STM32_I2C_I2C3_DMA_PRIORITY);
}
#endif /* STM32_I2C_USE_I2C3 */
}
/* DMA streams mode preparation in advance.*/
dmaStreamSetMode(i2cp->dmatx, i2cp->dmamode | STM32_DMA_CR_DIR_M2P);
dmaStreamSetMode(i2cp->dmarx, i2cp->dmamode | STM32_DMA_CR_DIR_P2M);
/* I2C registers pointed by the DMA.*/
dmaStreamSetPeripheral(i2cp->dmarx, &dp->DR);
dmaStreamSetPeripheral(i2cp->dmatx, &dp->DR);
@ -770,6 +777,7 @@ msg_t i2c_lld_master_receive_timeout(I2CDriver *i2cp, i2caddr_t addr,
i2cp->errors = 0;
/* RX DMA setup.*/
dmaStreamSetMode(i2cp->dmarx, i2cp->rxdmamode);
dmaStreamSetMemory0(i2cp->dmarx, rxbuf);
dmaStreamSetTransactionSize(i2cp->dmarx, rxbytes);
@ -852,10 +860,12 @@ msg_t i2c_lld_master_transmit_timeout(I2CDriver *i2cp, i2caddr_t addr,
i2cp->errors = 0;
/* TX DMA setup.*/
dmaStreamSetMode(i2cp->dmatx, i2cp->txdmamode);
dmaStreamSetMemory0(i2cp->dmatx, txbuf);
dmaStreamSetTransactionSize(i2cp->dmatx, txbytes);
/* RX DMA setup.*/
dmaStreamSetMode(i2cp->dmarx, i2cp->rxdmamode);
dmaStreamSetMemory0(i2cp->dmarx, rxbuf);
dmaStreamSetTransactionSize(i2cp->dmarx, rxbytes);

8
os/hal/platforms/STM32/I2Cv1/i2c_lld.h
View File

@ -391,9 +391,13 @@ struct I2CDriver {
*/
i2caddr_t addr;
/**
* @brief DMA mode bit mask.
* @brief RX DMA mode bit mask.
*/
uint32_t dmamode;
uint32_t rxdmamode;
/**
* @brief TX DMA mode bit mask.
*/
uint32_t txdmamode;
/**
* @brief Receive DMA channel.
*/

1
readme.txt
View File

@ -86,6 +86,7 @@
*****************************************************************************
*** 2.5.2 ***
- FIX: Fixed fixed I2C malfunction after fixing bug 3607518 (bug 3607549)
- FIX: Fixed spurious interrupt disabling an STM32 DMA stream (bug 3607518)
(backported to 2.4.4).
- FIX: Fixed start of any ADC disables VREF and VBAT (bug 3607467)