altos: Add one-byte SPI output routine for LPC and STM cores

[fw/altos] / src / lpc / ao_arch_funcs.h

diff --git a/src/lpc/ao_arch_funcs.h b/src/lpc/ao_arch_funcs.h
index fbe641d87b9ee7ca53c16934e70a8ce6b35bc660..dbb415381ce28c980cf78f31da38ada52fad1f55 100644 (file)
--- a/src/lpc/ao_arch_funcs.h
+++ b/src/lpc/ao_arch_funcs.h
@@ -227,6 +227,28 @@ ao_spi_duplex(const void *out, void *in, uint16_t len, uint8_t spi_index);
 void
 ao_spi_init(void);
 
+static inline void
+ao_spi_send_sync(const void *block, uint16_t len, uint8_t spi_index)
+{
+       ao_spi_send(block, len, spi_index);
+}
+
+static inline void ao_spi_send_byte(uint8_t byte, uint8_t spi_index)
+{
+       struct lpc_ssp  *lpc_ssp;
+       switch (spi_index) {
+       case 0:
+               lpc_ssp = &lpc_ssp0;
+               break;
+       case 1:
+               lpc_ssp = &lpc_ssp1;
+               break;
+       }
+       lpc_ssp->dr = byte;
+       while ((lpc_ssp->sr & (1 << LPC_SSP_SR_RNE)) == 0);
+       (void) lpc_ssp->dr;
+}
+
 #define ao_spi_init_cs(port, mask) do {                                        \
                uint8_t __bit__;                                        \
                for (__bit__ = 0; __bit__ < 32; __bit__++) {            \