[fix][lpc21] workaround for init of spi_slave_hs

conf/firmwares/subsystems/fixedwing/spi_slave_hs.makefile

@@ -1,7 +1,7 @@
 # Hey Emacs, this is a -*- makefile -*-
 
 #generic spi driver
-$(TARGET).CFLAGS += -DUSE_SPI
+$(TARGET).CFLAGS += -DUSE_SPI -DSPI_SLAVE_HS
 
 ifeq ($(TARGET), sim)
 else

sw/airborne/arch/lpc21/mcu_periph/spi_slave_hs_arch.c

@@ -47,7 +47,6 @@ uint8_t spi_slave_hs_tx_insert_idx, spi_slave_hs_tx_extract_idx;
 uint8_t spi_slave_hs_tx_buffer[SPI_SLAVE_HS_TX_BUFFER_SIZE];
 
 /* Prototypes */
-// void spi_init( void ); // -> declared in spi.h
 static void SSP_ISR(void) __attribute__((naked));
 
 /* SSPCR0 settings */
@@ -105,7 +104,7 @@ static void SSP_ISR(void) __attribute__((naked));
 #endif
 
 
-void spi_init(void) {
+void spi_slave_hs_init(void) {
 
   /* setup pins for SSP (SCK, MISO, MOSI) */
   PINSEL1 |= SSP_PINSEL1_SCK  | SSP_PINSEL1_MISO | SSP_PINSEL1_MOSI | SSP_PINSEL1_SSEL;

sw/airborne/mcu.c

@@ -143,6 +143,10 @@ void mcu_init(void) {
   spi3_slave_init();
 #endif
 #endif // SPI_SLAVE
+
+#if SPI_SLAVE_HS
+  spi_slave_hs_init();
+#endif
 #endif // USE_SPI
 
 #ifdef USE_DAC

sw/airborne/mcu_periph/spi.h

@@ -359,4 +359,8 @@ extern bool_t spi_slave_wait(struct spi_periph* p);
 /** @}*/
 /** @}*/
 
+#if SPI_SLAVE_HS
+extern void spi_slave_hs_init(void);
+#endif
+
 #endif /* SPI_H */