Diff: inc/admw1001/admw1001_host_comms.h

Revision:

5:0728bde67bdb

Child:

6:9d393a9677f4

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/inc/admw1001/admw1001_host_comms.h	Wed Jun 05 05:39:15 2019 +0000
@@ -0,0 +1,61 @@
+/*
+Copyright (c) 2018 by ADI. This model is the confidential and
+proprietary property of ADI and the possession or use of this
+file requires a written license.
+*/
+#ifndef __ADMW1001_HOST_COMMS_H__
+#define __ADMW1001_HOST_COMMS_H__
+
+#include "admw_types.h"
+/*
+ * The host is expected to transfer a 16-bit command, followed by data bytes, in 2
+ * separate transfers delineated by the CS signal and a short delay in between.
+ *
+ * The 16-bit command contains a right-justified 11-bit register address (offset),
+ * and the remaining upper 5 bits are reserved as command bits assigned as follows:
+ * [15:11] 10000b = write command, 01000b = read command, anything else is invalid
+ * [10:0]  register address (0-2047)
+ */
+
+/* Register address space is limited to 2048 bytes (11 bit address) */
+#define ADMW1001_HOST_COMMS_CMD_MASK 0xF800
+#define ADMW1001_HOST_COMMS_ADR_MASK 0x07FF
+
+/*
+ * The following commands are currently supported, anything else is treated
+ * as an error
+ */
+#define ADMW1001_HOST_COMMS_WRITE_CMD 0x8000
+#define ADMW1001_HOST_COMMS_READ_CMD  0x4000
+
+/*
+ * The following bytes are sent back to the host when a command is recieved,
+ * to be used by the host to verify that we were ready to receive the command.
+ */
+#define ADMW1001_HOST_COMMS_CMD_RESP_0 0xF0
+#define ADMW1001_HOST_COMMS_CMD_RESP_1 0xE1
+
+/*
+ * The following minimum delay, in microseconds, must be inserted after each SPI
+ * transfer to allow time for it to be processed by the device
+ */
+#define ADMW1001_HOST_COMMS_XFER_DELAY (60)
+
+/*! ADMW1001 Sensor Result bit field structure */
+typedef struct _ADMW1001_Sensor_Result_t {
+    union {
+        struct {
+            float32_t Sensor_Result;      /**< Linearized and compensated sensor result */
+            uint32_t Channel_ID    :  4;  /**< Indicates which channel this result corresponds to */
+            uint32_t Ch_Error      :  1;  /**< Indicates Error on channel */
+            uint32_t Ch_Alert      :  1;  /**< Indicates Alert on channel */
+            uint32_t Ch_Raw        :  1;  /**< Indicates if Raw sensor data field is valid */
+            uint32_t Ch_Valid      :  1;  /**< Indicates if this Result structure is valid */
+            uint32_t Raw_Sample    : 24;  /**< Raw sensor data value */
+        };
+        uint64_t VALUE64;
+   };
+} ADMW1001_Sensor_Result_t;
+
+#endif /* __ADMW1001_HOST_COMMS_H__ */
+