Ben Katz / mbed-dev-f303

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Diff: targets/TARGET_Freescale/TARGET_MCUXpresso_MCUS/TARGET_MCU_K64F/spi_api.c

Revision:
167:e84263d55307
Parent:
154:37f96f9d4de2
Child:
170:19eb464bc2be
--- a/targets/TARGET_Freescale/TARGET_MCUXpresso_MCUS/TARGET_MCU_K64F/spi_api.c	Thu Jun 08 15:02:37 2017 +0100
+++ b/targets/TARGET_Freescale/TARGET_MCUXpresso_MCUS/TARGET_MCU_K64F/spi_api.c	Wed Jun 21 17:46:44 2017 +0100
@@ -127,6 +127,21 @@
     return rx_data & 0xffff;
 }
 
+int spi_master_block_write(spi_t *obj, const char *tx_buffer, int tx_length, char *rx_buffer, int rx_length) {
+    int total = (tx_length > rx_length) ? tx_length : rx_length;
+
+    DSPI_MasterTransferBlocking(spi_address[obj->spi.instance], &(dspi_transfer_t){
+        .txData = (uint8_t *)tx_buffer,
+        .rxData = (uint8_t *)rx_buffer,
+        .dataSize = total,
+        .configFlags = kDSPI_MasterCtar0 | kDSPI_MasterPcs0 | kDSPI_MasterPcsContinuous,
+    });
+
+    DSPI_ClearStatusFlags(spi_address[obj->spi.instance], kDSPI_RxFifoDrainRequestFlag | kDSPI_EndOfQueueFlag);
+
+    return total;
+}
+
 int spi_slave_receive(spi_t *obj)
 {
     return spi_readable(obj);