diff options
Diffstat (limited to 'libvxi11client/libvxi11client.c')
| -rw-r--r-- | libvxi11client/libvxi11client.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/libvxi11client/libvxi11client.c b/libvxi11client/libvxi11client.c index 5d09786..66bb020 100644 --- a/libvxi11client/libvxi11client.c +++ b/libvxi11client/libvxi11client.c @@ -16,7 +16,6 @@ /** * This is a thin wrapper around the rpcgen generated code to give it a simpler interface. - * Only one server with a single link is supported. */ #define FLAG_TERMCHRSET (1 << 7) @@ -154,6 +153,7 @@ int vxi11_open(VXI11Context* context, char* address, char* device) { /** * read the status byte of the connected server + * returns -1 */ int vxi11_readstatusbyte(VXI11Context* context, bool waitforlock) { @@ -165,11 +165,12 @@ int vxi11_readstatusbyte(VXI11Context* context, bool waitforlock) { Device_ReadStbResp* resp = device_readstb_1(¶ms, context->clnt); if (resp != NULL && resp->error == 0) - return resp->stb; + return resp->stb | (1 << 8); // this sets a bit above the byte so that we can tell whether there was a state issue + // or if the instrument returned 0 else if (resp == NULL) return 0; else - return -1; + return -(resp->error); } /** @@ -192,7 +193,7 @@ int vxi11_write(VXI11Context* context, char* data, int len, bool waitlock, bool else if (resp == NULL) return 0; else - return -1; + return -(resp->error); } /** @@ -226,11 +227,11 @@ int vxi11_read(VXI11Context* context, char* buffer, unsigned int bufferlen, bool else if (resp == NULL) return 0; else - return -1; + return -(resp->error); } /** - * + * call docmd with the specified command */ int vxi11_docmd(VXI11Context* context, unsigned long cmd, bool waitforlock) { |