Merge pull request #428 from 0xc0170/fix_spi_slave_read_kinetis

bogdanm · bogdanm · commit 83b4b6d213bd · 2014-08-07T09:01:56.000+01:00
[Kinetis K] K64F and K20D50M - SPI Slave read bug fix
diff --git a/libraries/mbed/targets/hal/TARGET_Freescale/TARGET_K20D50M/spi_api.c b/libraries/mbed/targets/hal/TARGET_Freescale/TARGET_K20D50M/spi_api.c
@@ -165,6 +165,7 @@ int spi_slave_receive(spi_t *obj) {
 }
 
 int spi_slave_read(spi_t *obj) {
+    obj->spi->SR |= SPI_SR_RFDF_MASK;
     return obj->spi->POPR;
 }
 
diff --git a/libraries/mbed/targets/hal/TARGET_Freescale/TARGET_KPSDK_MCUS/TARGET_K64F/spi_api.c b/libraries/mbed/targets/hal/TARGET_Freescale/TARGET_KPSDK_MCUS/TARGET_K64F/spi_api.c
@@ -133,6 +133,7 @@ int spi_slave_receive(spi_t *obj) {
 }
 
 int spi_slave_read(spi_t *obj) {
+    dspi_hal_clear_status_flag(obj->instance, kDspiRxFifoDrainRequest);
     return dspi_hal_read_data(obj->instance);
 }
 

Original file line number	Diff line number	Diff line change
`@@ -165,6 +165,7 @@ int spi_slave_receive(spi_t *obj) {`
`165`	`165`	`}`
`166`	`166`
`167`	`167`	`int spi_slave_read(spi_t *obj) {`
	`168`	`+ obj->spi->SR \|= SPI_SR_RFDF_MASK;`
`168`	`169`	`return obj->spi->POPR;`
`169`	`170`	`}`
`170`	`171`
Original file line number	Diff line number	Diff line change
`@@ -133,6 +133,7 @@ int spi_slave_receive(spi_t *obj) {`
`133`	`133`	`}`
`134`	`134`
`135`	`135`	`int spi_slave_read(spi_t *obj) {`
	`136`	`+ dspi_hal_clear_status_flag(obj->instance, kDspiRxFifoDrainRequest);`
`136`	`137`	`return dspi_hal_read_data(obj->instance);`
`137`	`138`	`}`
`138`	`139`