norma dmm: Implemented driver.

[libsigrok.git] / hardware / norma-dmm / protocol.h

diff --git a/hardware/norma-dmm/protocol.h b/hardware/norma-dmm/protocol.h
index a8af261384b78603c568aee89a5c46514e5d2168..70a777afc4a6908a61cb182a05810717e121e1be 100644 (file)
--- a/hardware/norma-dmm/protocol.h
+++ b/hardware/norma-dmm/protocol.h
@@ -34,18 +34,48 @@
 #define sr_warn(s, args...) sr_warn(LOG_PREFIX s, ## args)
 #define sr_err(s, args...) sr_err(LOG_PREFIX s, ## args)
 
+#define NMADMM_BUFSIZE  256
+
+/** Norma DMM request types (used ones only, the multimeters support about 50).
+ */
+enum nmadmm_req_t {
+       NMADMM_REQ_IDN = 0,     /**< Request identity */
+       NMADMM_REQ_STATUS,      /**< Request device status (value + ...) */
+};
+
+/** Defines requests used to communicate with device. */
+struct nmadmm_req {
+       enum nmadmm_req_t req_t;        /** Request type. */
+       const char* reqstr;             /** Request string */
+};
+
+/** Strings for requests. */
+extern const struct nmadmm_req nmadmm_requests[];
+
 /** Private, per-device-instance driver context. */
 struct dev_context {
        /* Model-specific information */
-
+       char*   version;        /**< Version string */
+       int     type;           /**< DM9x0, e.g. 5 = DM950 */
        /* Acquisition settings */
+       uint64_t limit_samples; /**< Target number of samples */
+       uint64_t limit_msec;    /**< Target sampling time */
 
-       /* Operational state */
+       /* Opaque pointer passed in by frontend. */
+       void *cb_data;
 
+       /* Operational state */
+       enum nmadmm_req_t last_req;     /**< Last request. */
+       gboolean last_req_pending;      /**< Last request not answered yet.*/
+       int     lowbatt;                /**< Low battery. 1=low, 2=critical.*/
        /* Temporary state across callbacks */
-
+       uint64_t num_samples;           /**< Current #samples. */
+       GTimer* elapsed_msec;           /**< Used for sampling with limit_msec*/
+       unsigned char buf[NMADMM_BUFSIZE];      /**< Buffer for read callback */
+       int buflen;                     /**< Data len in buf */
 };
 
 SR_PRIV int norma_dmm_receive_data(int fd, int revents, void *cb_data);
+SR_PRIV int xgittoint(char xgit);
 
 #endif