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Diff: targets/TARGET_NXP/TARGET_LPC176X/spi_api.c
- Revision:
- 167:e84263d55307
- Parent:
- 149:156823d33999
- Child:
- 170:19eb464bc2be
--- a/targets/TARGET_NXP/TARGET_LPC176X/spi_api.c Thu Jun 08 15:02:37 2017 +0100
+++ b/targets/TARGET_NXP/TARGET_LPC176X/spi_api.c Wed Jun 21 17:46:44 2017 +0100
@@ -190,6 +190,20 @@
return ssp_read(obj);
}
+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 (ssp_readable(obj) && !ssp_busy(obj)) ? (1) : (0);
}