implement SPI flash chip

2 files changed, 12 insertions, 14 deletions

diff --git a/watch-library/hardware/hw/driver_init.c b/watch-library/hardware/hw/driver_init.c
index 3e097a8e..5eec7bcd 100644
--- a/watch-library/hardware/hw/driver_init.c
+++ b/watch-library/hardware/hw/driver_init.c
@@ -90,16 +90,6 @@ void SPI_0_PORT_init(void) {
 	gpio_set_pin_direction(A1, GPIO_DIRECTION_OUT);
 
 	gpio_set_pin_function(A1, PINMUX_PB01C_SERCOM3_PAD3);
-
-	gpio_set_pin_level(A3,
-	                   // <y> Initial level
-	                   // <id> pad_initial_level
-	                   // <false"> Low
-	                   // <true"> High
-	                   true);
-
-	// Set pin direction to output
-	gpio_set_pin_direction(A3, GPIO_DIRECTION_OUT);
 }
 
 void SPI_0_CLOCK_init(void) {
diff --git a/watch-library/hardware/watch/watch_spi.c b/watch-library/hardware/watch/watch_spi.c
index df68bbaa..8cdebb08 100644
--- a/watch-library/hardware/watch/watch_spi.c
+++ b/watch-library/hardware/watch/watch_spi.c
@@ -37,10 +37,18 @@ void watch_disable_spi(void) {
     spi_io = NULL;
 }
 
-void watch_spi_send(uint8_t *buf, uint16_t length) {
-	io_write(spi_io, buf, length);
+bool watch_spi_write(const uint8_t *buf, uint16_t length) {
+	return !!io_write(spi_io, buf, length);
 }
 
-void watch_spi_receive(uint8_t *buf, uint16_t length) {
-	io_read(spi_io, buf, length);
+bool watch_spi_read(uint8_t *buf, uint16_t length) {
+	return !!io_read(spi_io, buf, length);
+}
+
+bool watch_spi_transfer(const uint8_t *data_out, uint8_t *data_in, uint16_t length) {
+    struct spi_xfer xfer;
+    xfer.txbuf = (uint8_t *)data_out;
+    xfer.rxbuf = data_in;
+    xfer.size = length;
+    return !!spi_m_sync_transfer(&SPI_0, &xfer);
 }