[WIP] nrf52832: add spi master driverHEADmain

1 files changed, 47 insertions, 0 deletions

diff --git a/src/spim.h b/src/spim.h
new file mode 100644
index 0000000..2a7a5aa
--- /dev/null
+++ b/src/spim.h
@@ -0,0 +1,47 @@
+#ifndef SPIM_H
+#define SPIM_H
+
+#include "types.h"
+
+#define SPI_MAX_BUFFER_SIZE 256
+
+enum spim_clk_frequency_bps {
+	K125 = 0x02000000,
+	K250 = 0x04000000,
+	K500 = 0x08000000,
+	M1 = 0x10000000,
+	M2 = 0x20000000,
+	M4 = 0x40000000,
+	M8 = 0x80000000,
+};
+
+enum spim_clk_phase {
+	LEADING = 0,
+	TRAILING = 1,
+};
+
+enum spim_clk_polarity {
+	ACTIVE_HIGH = 0,
+	ACTIVE_LOW = 1,
+};
+
+struct spim_setup_info {
+	u8 sclk_pin;
+	u8 miso_pin;
+	u8 mosi_pin;
+	u8 ss_pin;
+	enum clk_frequency_bps clk_freqency;
+	u8 rxd_len;
+	u8 txd_len;
+	enum spim_clk_phase clk_phase;
+	enum spim_clk_polarity clk_polarity;
+	u8 over_read_char;
+};
+
+u8 spim_setup(u8 spi_index, struct spim_setup_info setup_info);
+
+void spim_send(u8 spi_index, u8 *write_buffer, u8 *read_buffer);
+
+void spim_stop(u8 spi_index);
+
+#endif