SPI moved from src subfolder and mode changes

SPI USI should now work.
SPI USI is now documented.
Removing architecture specific folders in src.

1 files changed, 0 insertions, 56 deletions

diff --git a/src/avr25/spi_usi.c b/src/avr25/spi_usi.c
deleted file mode 100644
index e63721a..0000000
--- a/src/avr25/spi_usi.c
+++ /dev/null
@@ -1,56 +0,0 @@
-#include "../../spi_usi.h"
-
-#if __AVR_ARCH__ == 25
-
-#ifdef IOE_SPI_USI_MASTER
-
-// TODO counter settings with interups
-inline void ioe_spi_usi_init(void) {
-    USI_DIR_REG |= _BV(USI_USCK_PIN) | _BV(USI_DO_PIN);
-    USI_OUT_REG |= _BV(USI_DI_PIN);
-
-    USICR |= _BV(USIWM0) | _BV(USICS1) | _BV(USICLK);
-}
-
-inline int8_t ioe_spi_usi_transfer(int8_t d) {
-    USISR |= _BV(USIOIF);
-    USIDR = d;
-    do {
-        USICR |= _BV(USITC);
-    } while (!(USISR & _BV(USIOIF)));
-    return USIDR;
-}
-
-#else /* IOE_SPI_USI_MASTER */
-
-inline void ioe_spi_usi_init(void) {
-    USI_DIR_REG |= _BV(USI_DO_PIN);
-    USI_OUT_REG |= _BV(USI_USCK_PIN) | _BV(USI_DI_PIN);
-
-    USICR |= _BV(USIWM0) | _BV(USICS1) | _BV(USIOIE);
-}
-
-inline void ioe_spi_usi_expose(int8_t data) {
-    USIDR = data;
-}
-
-inline void ioe_spi_usi_expect(void) {
-    USISR |= _BV(USIOIF);
-}
-
-inline int ioe_spi_usi_busy(void) {
-    return USISR & 0x0F;
-}
-
-inline void ioe_spi_usi_join(void) {
-    while (ioe_spi_usi_busy()) {
-    }
-}
-
-SIGNAL(USI_OVF_vect) {
-    ioe_spi_usi_retrieve(USIDR);
-}
-
-#endif /* IOE_SPI_USI_MASTER */
-
-#endif /* __AVR_ARCH__ == 25 */