serial-dmm: Add BBC Goerz Metrawatt M2110 DMM driver.

[libsigrok.git] / hardware / serial-dmm / protocol.c

diff --git a/hardware/serial-dmm/protocol.c b/hardware/serial-dmm/protocol.c
index d47a7e7f46eb376b21bb9625c2350e08819c55d1..06e0acd026d9b5609ed5dfc5dcd40d75fba9746a 100644 (file)
--- a/hardware/serial-dmm/protocol.c
+++ b/hardware/serial-dmm/protocol.c
@@ -80,7 +80,9 @@ static void handle_new_data(struct sr_dev_inst *sdi, int dmm, void *info)
        /* Try to get as much data as the buffer can hold. */
        len = DMM_BUFSIZE - devc->buflen;
        len = serial_read(serial, devc->buf + devc->buflen, len);
-       if (len < 1) {
+       if (len == 0)
+               return; /* No new bytes, nothing to do. */
+       if (len < 0) {
                sr_err("Serial port read error: %d.", len);
                return;
        }
@@ -158,6 +160,7 @@ SR_PRIV int receive_data_##ID_UPPER(int fd, int revents, void *cb_data) { \
        return receive_data(fd, revents, ID_UPPER, &info, cb_data); }
 
 /* Driver-specific receive_data() wrappers */
+RECEIVE_DATA(BBCGM_M2110, metex14) /* metex14_info used as a dummy. */
 RECEIVE_DATA(DIGITEK_DT4000ZC, fs9721)
 RECEIVE_DATA(TEKPOWER_TP4000ZC, fs9721)
 RECEIVE_DATA(METEX_ME31, metex14)
@@ -165,6 +168,7 @@ RECEIVE_DATA(PEAKTECH_3410, metex14)
 RECEIVE_DATA(MASTECH_MAS345, metex14)
 RECEIVE_DATA(VA_VA18B, fs9721)
 RECEIVE_DATA(METEX_M3640D, metex14)
+RECEIVE_DATA(METEX_M4650CR, metex14)
 RECEIVE_DATA(PEAKTECH_4370, metex14)
 RECEIVE_DATA(PCE_PCE_DM32, fs9721)
 RECEIVE_DATA(RADIOSHACK_22_168, metex14)
@@ -172,6 +176,7 @@ RECEIVE_DATA(RADIOSHACK_22_805, metex14)
 RECEIVE_DATA(RADIOSHACK_22_812, rs9lcd)
 RECEIVE_DATA(TECPEL_DMM_8061_SER, fs9721)
 RECEIVE_DATA(VOLTCRAFT_M3650D, metex14)
+RECEIVE_DATA(VOLTCRAFT_M4650CR, metex14)
 RECEIVE_DATA(VOLTCRAFT_VC820_SER, fs9721)
 RECEIVE_DATA(VOLTCRAFT_VC830_SER, fs9922)
 RECEIVE_DATA(VOLTCRAFT_VC840_SER, fs9721)
@@ -179,4 +184,4 @@ RECEIVE_DATA(UNI_T_UT60A_SER, fs9721)
 RECEIVE_DATA(UNI_T_UT60E_SER, fs9721)
 RECEIVE_DATA(UNI_T_UT61D_SER, fs9922)
 RECEIVE_DATA(UNI_T_UT61E_SER, es51922)
-RECEIVE_DATA(ISO_TECH_IDM103N_SER, es519xx)
+RECEIVE_DATA(ISO_TECH_IDM103N, es519xx)