1 files changed, 14 insertions, 45 deletions
diff --git a/src/spi.c b/src/spi.c
index 262f402..4c0293c 100644
--- a/src/spi.c
+++ b/src/spi.c
@@ -1,54 +1,23 @@
-#include "../spi.h"
+#ifdef CONFIG_IOE_SPI
+#ifdef MCUSUPPORT_USART
 
 volatile int8_t _spi_busy;
 
-inline void spi_init(enum spiMode mode) {
-    _spi_busy = 0;
-    if (mode == SPI_MODE_MASTER) {
-        // Set MOSI and SCK output
-        DDR_SPI |= _BV(DD_MOSI) | _BV(DD_SCLK);
-        // Set MISO pull up resistor
-        PORT_SPI |= _BV(PORT_MISO);
-        // Enable SPI master, set clock rate fck/16 and enable SPI interrupt
-        SPCR = _BV(SPE) | _BV(SPIE) | _BV(MSTR) | _BV(SPR0);
-    } else {
-        // Set MISO as output
-        DDR_SPI |= _BV(DD_MISO);
-        // Set SCLK and MOSI pull up resistor
-        PORT_SPI |= _BV(PORT_SCLK) | _BV(PORT_MOSI);
-        // Enable SPI and interrupt
-        SPCR = _BV(SPE) | _BV(SPIE);
-    }
-}
-
-inline int8_t spi_busy(void) {
-    return _spi_busy;
-}
-
-inline void spi_join(void) {
-    while (spi_busy());
-}
-
-inline uint8_t spi_send(uint8_t data) {
-    spi_transfer(data);
-    while (spi_busy());
-    return SPDR;
-}
-
-inline void spi_transfer(uint8_t data) {
-    _spi_busy = 1;
-    SPDR = data;
-}
-
-inline void spi_expose(uint8_t data) {
-    SPDR = data;
-}
-
 ////// Interrupts ////////////////////////////////
-void (*spi_receive)(uint8_t data) = 0;
+void (*spi_receive) (uint8_t data) = 0;
+
+#ifdef CONFIG_IOE_CAN_MCP2515
+extern void can_mcp2515_spi_hook(uint8_t);
+#endif /* CONFIG_IOE_CAN_MCP2515 */
 
-SIGNAL(SPI_STC_vect) {
+ISR(SPI_STC_vect, ISR_BLOCK) {
     _spi_busy = 0;
+#ifdef CONFIG_IOE_CAN_MCP2515
+    can_mcp2515_spi_hook(SPDR);
+#endif /* CONFIG_IOE_CAN_MCP2515 */
     if (spi_receive)
         spi_receive(SPDR);
 }
+
+#endif /* MCUSUPPORT_SPI */
+#endif /* CONFIG_IOE_SPI */