[HAL][KSDK] Switched delay type of SPI

Sissors · Sissors · commit 9f16e7568724 · 2015-05-03T21:09:15.000+02:00
Even though it does not actually toggle the CS signal, we can also use
the delay to CS toggle to get proper waveforms. This also fixes SPI in
mode 3.
diff --git a/libraries/mbed/targets/hal/TARGET_Freescale/TARGET_KPSDK_MCUS/spi_api.c b/libraries/mbed/targets/hal/TARGET_Freescale/TARGET_KPSDK_MCUS/spi_api.c
@@ -91,7 +91,7 @@ void spi_frequency(spi_t *obj, int hz) {
     CLOCK_SYS_GetFreq(kBusClock, &busClock);
     uint32_t spi_address[] = SPI_BASE_ADDRS;
     DSPI_HAL_SetBaudRate(spi_address[obj->instance], kDspiCtar0, (uint32_t)hz, busClock);
-    DSPI_HAL_CalculateDelay(spi_address[obj->instance], kDspiCtar0, kDspiAfterTransfer, busClock, 500000000 / hz);  //Half clock period delay after SPI transfer
+    DSPI_HAL_CalculateDelay(spi_address[obj->instance], kDspiCtar0, kDspiLastSckToPcs, busClock, 500000000 / hz);  //Half clock period delay after SPI transfer
 }
 
 static inline int spi_writeable(spi_t * obj) {

Original file line number	Diff line number	Diff line change
`@@ -91,7 +91,7 @@ void spi_frequency(spi_t *obj, int hz) {`
`91`	`91`	`CLOCK_SYS_GetFreq(kBusClock, &busClock);`
`92`	`92`	`uint32_t spi_address[] = SPI_BASE_ADDRS;`
`93`	`93`	`DSPI_HAL_SetBaudRate(spi_address[obj->instance], kDspiCtar0, (uint32_t)hz, busClock);`
`94`		`- DSPI_HAL_CalculateDelay(spi_address[obj->instance], kDspiCtar0, kDspiAfterTransfer, busClock, 500000000 / hz); //Half clock period delay after SPI transfer`
	`94`	`+ DSPI_HAL_CalculateDelay(spi_address[obj->instance], kDspiCtar0, kDspiLastSckToPcs, busClock, 500000000 / hz); //Half clock period delay after SPI transfer`
`95`	`95`	`}`
`96`	`96`
`97`	`97`	`static inline int spi_writeable(spi_t * obj) {`