Add Software I2C implementation

1 files changed, 26 insertions, 0 deletions

diff --git a/include/driver/soft_i2c.h b/include/driver/soft_i2c.h
new file mode 100644
index 0000000..aff63e3
--- /dev/null
+++ b/include/driver/soft_i2c.h
@@ -0,0 +1,26 @@
+#ifndef SOFTI2C_H
+#define SOFTI2C_H
+
+class SoftI2C {
+	private:
+		SoftI2C(const SoftI2C &copy);
+
+		unsigned char sda, scl;
+
+		void start();
+		void stop();
+		bool tx(unsigned char byte);
+		unsigned char rx(bool send_ack);
+
+	public:
+		SoftI2C(unsigned char sda, unsigned char scl) : sda(sda), scl(scl) {}
+		signed char setup();
+		void scan(unsigned int *results);
+		signed char xmit(unsigned char address,
+				unsigned char tx_len, unsigned char *tx_buf,
+				unsigned char rx_len, unsigned char *rx_buf);
+};
+
+extern SoftI2C i2c;
+
+#endif