1 files changed, 122 insertions, 0 deletions
diff --git a/platform/atm2/ATM22xx-x1x/driver/gadc/gadc.h b/platform/atm2/ATM22xx-x1x/driver/gadc/gadc.h
new file mode 100644
index 0000000..6f1719a
--- /dev/null
+++ b/platform/atm2/ATM22xx-x1x/driver/gadc/gadc.h
@@ -0,0 +1,122 @@
+/**
+ *******************************************************************************
+ *
+ * @file gadc.h
+ *
+ * @brief Analog-to-digital converter
+ *
+ * Copyright (C) Atmosic 2020
+ *
+ *******************************************************************************
+ */
+
+#pragma once
+
+/**
+ *******************************************************************************
+ * @defgroup GADC General purpose ADC
+ * @ingroup DRIVERS
+ * @brief User driver for General purpose Analog to Digital Converter
+ *
+ * @{
+ *******************************************************************************
+ */
+
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if defined(__IEEE_LITTLE_ENDIAN) || defined(__LITTLE_ENDIAN__)
+/// Calibration data type
+struct gadc_cal_s {
+    union {
+	/// 32 bits data which combine offset and gain
+	uint32_t value;
+	/// Decomposition structure.
+	struct {
+	    /// Mantissa part of gain.
+	    unsigned int c1_mantissa:12;
+	    /// Exponent part of gain.
+	    int c1_exponent:6;
+	    /// Sign part of gain.
+	    unsigned int c1_sign:1;
+	    /// Double value of offset
+	    int c0_x2:13;
+	};
+    };
+};
+
+STATIC_ASSERT(sizeof(struct gadc_cal_s) == 4, "wrong size");
+/// Float data type
+typedef union {
+    /// C float value
+    float value;
+    /// Decomposition structure.
+    struct {
+	/// Mantissa part of float.
+	unsigned int fraction: 23;
+	/// Exponent part of float.
+	int exponent: 8;
+	/// Sign part of float.
+	unsigned int sign : 1;
+    } number;
+} __ieee_float_shape_type;
+#else
+#error "Unsupported floating point endian"
+#endif
+
+/// Channels used by GADC
+typedef enum {
+    /// VBAT channel.
+    VBATT =  0,
+    /// VSTORE channel.
+    VSTORE = 1,
+    /// VDD1A channel.
+    CORE = 2,
+    /// Temperature channel.
+    TEMP = 3,
+    /// P10/P11 differential channel.
+    PORT0_DIFFERENTIAL = 4,
+    /// P10 single-ended channel.
+    PORT0_SINGLE_ENDED_0 = 6,
+    /// P11 single-ended channel.
+    PORT0_SINGLE_ENDED_1 = 7,
+    /// For GADC driver use only
+    ZV_PORT = 8,
+    /// P9 single-ended channel.
+    PORT1_SINGLE_ENDED_1 = 9,
+} gadc_chan_t;
+
+/// Callback context data
+typedef struct {
+    /// Sensed channel.
+    gadc_chan_t ch;
+    /// Gext setting. (0 = more range / 1 = better resolution)
+    uint8_t gext;
+    /// Application context.
+    void const *app_ctx;
+} gadc_cb_ctx_t;
+
+/// Callback prototype
+typedef void (*gadc_callback_t)(float result, int16_t raw, struct gadc_cal_s cal,
+    gadc_cb_ctx_t const *ctx);
+
+/**
+ * @brief Sample given GADC channel and invoke callback on completion of measurement
+ * @param[in] channel    GADC channel to monitor
+ * @param[in] cb  Callback invoked with channel measurement on completion.
+ * @param[in] gext gain setting
+ * @param[in] ctx Context associated.
+ */
+void gadc_sample_channel(gadc_chan_t channel, gadc_callback_t cb, uint8_t gext,
+    void const *ctx);
+
+#ifdef __cplusplus
+}
+#endif
+
+/// @} GADC
+