zcy
/
tinySA
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

I2C. Some refactorings. 

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/branches/i2c_dev@3000 35acf78f-673a-0410-8e92-d51de3d6d3f4
master
barthess 2011-05-28 12:31:47 +00:00
parent 07556a2d03
commit 152f34a80c
3 changed files with 19 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
os/hal/include/i2c.h
View File

@ -150,8 +150,8 @@ struct I2CSlaveConfig{
/**
* @brief Receive and transmit buffers.
*/
size_t tx_bytes;
size_t rx_bytes;
size_t txbytes;
size_t rxbytes;
i2cblock_t *rxbuf; /*!< Pointer to receive buffer. */
i2cblock_t *txbuf; /*!< Pointer to transmit buffer.*/
uint16_t slave_addr;

30
os/hal/platforms/STM32/i2c_lld.c
View File

@ -73,20 +73,20 @@ static void i2c_serve_event_interrupt(I2CDriver *i2cp) {
txBuffp = (uint8_t*)i2cp->id_slave_config->txbuf;
datap = txBuffp;
txBuffp++;
i2cp->id_slave_config->tx_bytes--;
i2cp->id_slave_config->txbytes--;
/* If no further data to be sent, disable the I2C ITBUF in order to not have a TxE interrupt */
if(i2cp->id_slave_config->tx_bytes == 0) {
if(i2cp->id_slave_config->txbytes == 0) {
dp->CR2 &= (uint16_t)~I2C_CR2_ITBUFEN;
}
//EV8_1 write the first data
dp->DR = *datap;
break;
case I2C_EV8_MASTER_BYTE_TRANSMITTING:
if(i2cp->id_slave_config->tx_bytes > 0) {
if(i2cp->id_slave_config->txbytes > 0) {
datap = txBuffp;
txBuffp++;
i2cp->id_slave_config->tx_bytes--;
if(i2cp->id_slave_config->tx_bytes == 0) {
i2cp->id_slave_config->txbytes--;
if(i2cp->id_slave_config->txbytes == 0) {
/* If no further data to be sent, disable the ITBUF in order to not have a TxE interrupt */
dp->CR2 &= (uint16_t)~I2C_CR2_ITBUFEN;
}
@ -95,7 +95,7 @@ static void i2c_serve_event_interrupt(I2CDriver *i2cp) {
break;
case I2C_EV8_2_MASTER_BYTE_TRANSMITTED:
/* if nothing to read then generate stop */
if (i2cp->id_slave_config->rx_bytes == 0){
if (i2cp->id_slave_config->rxbytes == 0){
dp->CR1 |= I2C_CR1_STOP; // stop generation
/* Disable ITEVT In order to not have again a BTF IT */
dp->CR2 &= (uint16_t)~I2C_CR2_ITEVTEN;
@ -135,12 +135,12 @@ static void i2c_serve_event_interrupt(I2CDriver *i2cp) {
rxBuffp = i2cp->id_slave_config->rxbuf;
break;
case I2C_EV7_MASTER_REC_BYTE_RECEIVED:
if(i2cp->id_slave_config->rx_bytes != 3) {
if(i2cp->id_slave_config->rxbytes != 3) {
/* Read the data register */
*rxBuffp = dp->DR;
rxBuffp++;
i2cp->id_slave_config->rx_bytes--;
switch(i2cp->id_slave_config->rx_bytes){
i2cp->id_slave_config->rxbytes--;
switch(i2cp->id_slave_config->rxbytes){
case 3:
/* Disable the ITBUF in order to have only the BTF interrupt */
dp->CR2 &= (uint16_t)~I2C_CR2_ITBUFEN;
@ -172,7 +172,7 @@ static void i2c_serve_event_interrupt(I2CDriver *i2cp) {
chSysUnlockFromIsr();
rxBuffp++;
/* Decrement the number of readed bytes */
i2cp->id_slave_config->rx_bytes -= 2;
i2cp->id_slave_config->rxbytes -= 2;
i2cp->id_slave_config->flags = 0;
// ready for read DataN on the next EV7
break;
@ -187,7 +187,7 @@ static void i2c_serve_event_interrupt(I2CDriver *i2cp) {
rxBuffp++;
/* Read the DataN*/
*rxBuffp = dp->DR;
i2cp->id_slave_config->rx_bytes = 0;
i2cp->id_slave_config->rxbytes = 0;
i2cp->id_slave_config->flags = 0;
/* Portable I2C ISR code defined in the high level driver, note, it is a macro.*/
_i2c_isr_code(i2cp, i2cp->id_slave_config);
@ -574,11 +574,11 @@ void i2c_lld_master_receive(I2CDriver *i2cp){
i2cp->id_slave_config->errors = 0;
// Only one byte to be received
if(i2cp->id_slave_config->rx_bytes == 1) {
if(i2cp->id_slave_config->rxbytes == 1) {
i2cp->id_slave_config->flags |= I2C_FLG_1BTR;
}
// Only two bytes to be received
else if(i2cp->id_slave_config->rx_bytes == 2) {
else if(i2cp->id_slave_config->rxbytes == 2) {
i2cp->id_slave_config->flags |= I2C_FLG_2BTR;
i2cp->id_i2c->CR1 |= I2C_CR1_POS; // Acknowledge Position
}
@ -622,11 +622,11 @@ void i2c_lld_master_transceive(I2CDriver *i2cp){
i2cp->id_slave_config->errors = 0;
// Only one byte to be received
if(i2cp->id_slave_config->rx_bytes == 1) {
if(i2cp->id_slave_config->rxbytes == 1) {
i2cp->id_slave_config->flags |= I2C_FLG_1BTR;
}
// Only two bytes to be received
else if(i2cp->id_slave_config->rx_bytes == 2) {
else if(i2cp->id_slave_config->rxbytes == 2) {
i2cp->id_slave_config->flags |= I2C_FLG_2BTR;
i2cp->id_i2c->CR1 |= I2C_CR1_POS; // Acknowledge Position
}

4
os/hal/src/i2c.c
View File

@ -144,7 +144,7 @@ void i2cMasterTransmit(I2CDriver *i2cp, I2CSlaveConfig *i2cscfg) {
txbuf = i2cscfg->txbuf;
nbit_addr = i2cscfg->nbit_address;
n = i2cscfg->tx_bytes;
n = i2cscfg->txbytes;
chDbgCheck((i2cp != NULL) && (i2cscfg != NULL) && \
((nbit_addr == 7) || (nbit_addr == 10)) && (n > 0) && (txbuf != NULL),
@ -192,7 +192,7 @@ void i2cMasterReceive(I2CDriver *i2cp, I2CSlaveConfig *i2cscfg){
uint8_t nbit_addr;
rxbuf = i2cscfg->rxbuf;
n = i2cscfg->rx_bytes;
n = i2cscfg->rxbytes;
nbit_addr = i2cscfg->nbit_address;
chDbgCheck((i2cp != NULL) && (i2cscfg != NULL) && (n > 0) && \