Add Metex 14-byte ASCII protocol parser.

[libsigrok.git] / hardware / radioshack-dmm / api.c

diff --git a/hardware/radioshack-dmm/api.c b/hardware/radioshack-dmm/api.c
index a920d3a93f0b315b5e6368e28f38a8785af36ccf..c32ffbe6e1d62ed55440045e4060fc543800ebe4 100644 (file)
--- a/hardware/radioshack-dmm/api.c
+++ b/hardware/radioshack-dmm/api.c
@@ -26,7 +26,9 @@
 #include <errno.h>
 #include "libsigrok.h"
 #include "libsigrok-internal.h"
-#include "radioshack-dmm.h"
+#include "protocol.h"
+
+#define SERIALCOMM "4800/8n1"
 
 static const int hwopts[] = {
        SR_HWOPT_CONN,
@@ -95,21 +97,18 @@ static GSList *rs_22_812_scan(const char *conn, const char *serialcomm)
        struct drv_context *drvc;
        struct dev_context *devc;
        struct sr_probe *probe;
+       struct sr_serial_dev_inst *serial;
        GSList *devices;
-       int fd, retry;
+       int retry;
        size_t len, i, good_packets, dropped;
        char buf[128], *b;
        const struct rs_22_812_packet *rs_packet;
 
-       if ((fd = serial_open(conn, O_RDONLY | O_NONBLOCK)) < 0) {
-               sr_err("Unable to open '%s': %d.", conn, fd);
+       if (!(serial = sr_serial_dev_inst_new(conn, serialcomm)))
                return NULL;
-       }
 
-       if (serial_set_paramstr(fd, serialcomm) != SR_OK) {
-               sr_err("Unable to set serial parameters.");
+       if (serial_open(serial, O_RDONLY|O_NONBLOCK) != SR_OK)
                return NULL;
-       }
 
        sr_info("Probing port '%s' readonly.", conn);
 
@@ -126,11 +125,11 @@ static GSList *rs_22_812_scan(const char *conn, const char *serialcomm)
        while (!devices && retry < 3) {
                good_packets = 0;
                retry++;
-               serial_flush(fd);
+               serial_flush(serial);
 
                /* Let's get a bit of data and see if we can find a packet. */
                len = sizeof(buf);
-               serial_readline(fd, &b, &len, 250);
+               serial_readline(serial, &b, &len, 250);
                if ((len == 0) || (len < RS_22_812_PACKET_SIZE)) {
                        /* Not enough data received, is the DMM connected? */
                        continue;
@@ -167,8 +166,7 @@ static GSList *rs_22_812_scan(const char *conn, const char *serialcomm)
                        return NULL;
                }
 
-               devc->serial = sr_serial_dev_inst_new(conn, -1);
-               devc->serialcomm = g_strdup(serialcomm);
+               devc->serial = serial;
 
                sdi->priv = devc;
                sdi->driver = di;
@@ -179,7 +177,7 @@ static GSList *rs_22_812_scan(const char *conn, const char *serialcomm)
                devices = g_slist_append(devices, sdi);
                break;
        }
-       serial_close(fd);
+       serial_close(serial);
 
        return devices;
 }
@@ -205,13 +203,12 @@ static GSList *hw_scan(GSList * options)
        if (!conn)
                return NULL;
 
-       if (serialcomm) {
+       if (serialcomm)
                /* Use the provided comm specs. */
                devices = rs_22_812_scan(conn, serialcomm);
-       } else {
-               /* Try the default 4800/8n1. */
-               devices = rs_22_812_scan(conn, "4800/8n1");
-       }
+       else
+               /* Try the default. */
+               devices = rs_22_812_scan(conn, SERIALCOMM);
 
        return devices;
 }
@@ -234,15 +231,9 @@ static int hw_dev_open(struct sr_dev_inst *sdi)
                return SR_ERR_BUG;
        }
 
-       devc->serial->fd = serial_open(devc->serial->port, O_RDONLY);
-       if (devc->serial->fd < 0) {
-               sr_err("Couldn't open serial port '%s'.", devc->serial->port);
+       if (serial_open(devc->serial, O_RDONLY) != SR_OK)
                return SR_ERR;
-       }
-       if (serial_set_paramstr(devc->serial->fd, devc->serialcomm) != SR_OK) {
-               sr_err("Unable to set serial parameters.");
-               return SR_ERR;
-       }
+
        sdi->status = SR_ST_ACTIVE;
 
        return SR_OK;
@@ -258,8 +249,7 @@ static int hw_dev_close(struct sr_dev_inst *sdi)
        }
 
        if (devc->serial && devc->serial->fd != -1) {
-               serial_close(devc->serial->fd);
-               devc->serial->fd = -1;
+               serial_close(devc->serial);
                sdi->status = SR_ST_INACTIVE;
        }