Tux Leon
/
mbed-dev
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Diff: targets/TARGET_Freescale/TARGET_K20XX/spi_api.c
- Revision:
- 167:e84263d55307
- Parent:
- 149:156823d33999
- Child:
- 170:19eb464bc2be
diff -r c97ed07ec1a8 -r e84263d55307 targets/TARGET_Freescale/TARGET_K20XX/spi_api.c
--- a/targets/TARGET_Freescale/TARGET_K20XX/spi_api.c Thu Jun 08 15:02:37 2017 +0100
+++ b/targets/TARGET_Freescale/TARGET_K20XX/spi_api.c Wed Jun 21 17:46:44 2017 +0100
@@ -140,6 +140,20 @@
return obj->spi->POPR;
}
+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;
+
+ for (int i = 0; i < total; i++) {
+ char out = (i < tx_length) ? tx_buffer[i] : 0xff;
+ char in = spi_master_write(obj, out);
+ if (i < rx_length) {
+ rx_buffer[i] = in;
+ }
+ }
+
+ return total;
+}
+
int spi_slave_receive(spi_t *obj) {
return spi_readable(obj);
}