varpa: initial public commit

1 files changed, 48 insertions, 0 deletions

diff --git a/firmware/inc/driver/mcp4725.h b/firmware/inc/driver/mcp4725.h
new file mode 100644
index 0000000..06f6281
--- /dev/null
+++ b/firmware/inc/driver/mcp4725.h
@@ -0,0 +1,48 @@
+/**
+ * 
+ * Author: Dylan Muller
+ * Copyright (c) 2025 
+ * All rights reserved.
+ * 
+ * - Commercial/IP use prohibited.
+ * - Attribution required.
+ * See License.txt
+ *
+ */
+
+#ifndef MCP4725_H_
+#define MCP4725_H_
+
+#define MCP4725_BIT_PD0(x) (x << 4)
+#define MCP4725_BIT_PD1(x) (x << 5)
+
+#define MCP4725_ID_GATE_VOLT 0xB1
+#define MCP4725_ID_DRAIN_VOLT 0xB2
+
+#define MCP4725_DEV_0 0
+#define MCP4725_DEV_1 1
+
+#define MCP4725_DEV_GATE_VOLT MCP4725_DEV_0
+#define MCP4725_DEV_DRAIN_VOLT MCP4725_DEV_1
+
+#define MCP4725_DEV_GATE_VOLT_ADDR 0x60
+#define MCP4725_DEV_DRAIN_VOLT_ADDR 0x61
+
+#define MCP4725_DRAIN_GAIN 23
+
+void dac_init(
+    uint16_t init_value
+);
+
+void dac_write(
+    uint8_t id,
+    uint16_t value,
+    uint8_t conv_bypass
+);
+
+uint16_t dac_read(
+    uint8_t id,
+    uint8_t conv_bypass
+);
+
+#endif