Fixed get_volume for multiple channels.

1 files changed, 5 insertions, 5 deletions

diff --git a/main.cpp b/main.cpp
index 031c042..6e46591 100644
--- a/main.cpp
+++ b/main.cpp
@@ -85,7 +85,6 @@ auto conf_desc = configuration_desc(2, 1, 0, 0xc0, 0,
 class DAC {
 	Pin& reset;
 	I2C& i2c;
-	uint8_t volume;
 
 	public:
 		DAC(Pin& _reset, I2C& _i2c) : reset(_reset), i2c(_i2c) {
@@ -100,12 +99,13 @@ class DAC {
 			i2c.write_reg(0x4a, 0x02, 0x9e);
 			i2c.write_reg(0x4a, 0x06, (0 << 7) | (1 << 6) | (0 << 4) | (1 << 2) | (3 << 0));
 		}
-		uint8_t get_volume() {
-			return volume;
+		uint8_t get_volume(uint8_t c) {
+			uint8_t buf;
+			i2c.read_reg(0x4a, 0x1a + c, 1, &buf);
+			return buf & 0x7f;
 		}
 		void set_volume(uint8_t c, uint8_t v) {
-			volume = v;
-			i2c.write_reg(0x4a, 0x1a + c, volume & 0x7f);
+			i2c.write_reg(0x4a, 0x1a + c, v & 0x7f);
 		}
 };