varpa: initial public commit

1 files changed, 46 insertions, 0 deletions

diff --git a/firmware/inc/util.h b/firmware/inc/util.h
new file mode 100644
index 0000000..5936a3a
--- /dev/null
+++ b/firmware/inc/util.h
@@ -0,0 +1,46 @@
+/**
+ * 
+ * Author: Dylan Muller
+ * Copyright (c) 2025 
+ * All rights reserved.
+ * 
+ * - Commercial/IP use prohibited.
+ * - Attribution required.
+ * See License.txt
+ *
+ */
+
+#ifndef UTIL_H_
+#define UTIL_H_
+
+#include <stdint.h>
+
+#define UTIL_SYSTEM_VOLT ((uint32_t)3300) // (mV)
+#define UTIL_CONV_BITS 12
+#define UTIL_CONV_BIT(x) (1 << x)
+
+#define UTIL_COUPLER_ATTEN ((int16_t)4250) // BI-DIR COUPL CAL
+#define UTIL_POWER_THRESHOLD 2000
+
+uint8_t util_volt_to_count(
+    uint16_t volt,
+    uint16_t* count
+);
+
+uint8_t util_count_to_volt(
+    uint16_t count,
+    uint16_t* volt
+);
+
+int8_t util_count_to_pwr(
+    uint16_t count,
+    int16_t* cpwr
+);
+
+void util_print_pwr(
+    int16_t cpwr
+);
+
+uint16_t util_get_free_mem(void);
+
+#endif