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50 Register-Based Programming
Appendix B
if(err < VI_SUCCESS)err_handler(rf_mux,err);
/* read the ID and Device Type registers */
err = viIn16(rf_mux,VI_A16_SPACE,0x00,&id_reg);
if(err < VI_SUCCESS)err_handler(rf_mux,err);
err = viIn16(rf_mux,VI_A16_SPACE,0x02,&dt_reg);
if(err < VI_SUCCESS)err_handler(rf_mux,err);
printf("ID register = 0x%4X\nDevice Type register =
0x%4X\n",id_reg,dt_reg);
/* read the Status Register */
err = viIn16(rf_mux,VI_A16_SPACE,0x04,&stat_reg);
if(err < VI_SUCCESS)err_handler(rf_mux,err);
printf("Status register = "0x%4X\n",stat_reg);
/* close relays on registers 20h & 28h for signal path */
/* from CH031 to COM05. 20840 decimal = 5000h and */
/* 38 decimal = 26h */
err = viOut16(rf_mux,VI_A16_SPACE,0x20,0x5000);
if(err < VI_SUCCESS)err_handler(rf_mux,err);
err = viOut16(rf_mux,VI_A16_SPACE,0x28,0x26);
if(err < VI_SUCCESS)err_handler(rf_mux,err);
/* read relay control registers and print their values */
err = viIn16(rf_mux,VI_A16_SPACE,0x20,®_20h);
if(err < VI_SUCCESS)err_handler(rf_mux,err);
err = viIn16(rf_mux,VI_A16_SPACE,0x22,®_22h);
if(err < VI_SUCCESS)err_handler(rf_mux,err);
err = viIn16(rf_mux,VI_A16_SPACE,0x24,®_24h);
if(err < VI_SUCCESS)err_handler(rf_mux,err);
err = viIn16(rf_mux,VI_A16_SPACE,0x26,®_26h);
if(err < VI_SUCCESS)err_handler(rf_mux,err);
err = viIn16(rf_mux,VI_A16_SPACE,0x28,®_28h);
if(err < VI_SUCCESS)err_handler(rf_mux,err);
printf("\n\nLeft-hand Assembly Register 20h = 0x%4X\n",reg_20h);
printf("Left-hand Assembly Register 22h = 0x%4X\n", reg_22h);
printf("Right-hand Assembly Register 24h = 0x%4X\n", reg_24h);
printf("Right-hand Assembly Register 26h = 0x%4X\n", reg_26h);
printf("Register 28h for Both Assemblies = 0x%4X\n",reg_28h);
/* wait 5 seconds before resetting module */
wait (5);
/* reset the E1470A to open all closed channels */
/*writinga0totherelaycontrolregistersalsoopens channels */
err = viOut16(rf_mux,VI_A16_SPACE,0x04,1);
if(err < VI_SUCCESS)err_handler(rf_mux,err);