- // 'h' means higher-low-frequency, 134 kHz
- if(*Cmd == 'h') {
- c.arg[0] = 1;
- } else if (*Cmd == '\0') {
- c.arg[0] = 0;
- } else if (sscanf(Cmd, "%"lli, &c.arg[0]) != 1) {
- PrintAndLog("Samples 1: 'lf read'");
- PrintAndLog(" 2: 'lf read h'");
- PrintAndLog(" 3: 'lf read <divisor>'");
- return 0;
- }
- SendCommand(&c);
- WaitForResponse(CMD_ACK,NULL);
- return 0;
+ // Divisor
+ if(param_getchar(Cmd, cmdp) == 'H') {
+ divisor = 88;
+ cmdp++;
+ }else if(param_isdec(Cmd,cmdp) )
+ {
+ errors |= param_getdec(Cmd,cmdp, &divisor);
+ }
+ //BPS
+ if(param_getchar(Cmd, cmdp) == 'b') {
+ errors |= param_getdec(Cmd,cmdp+1,&bps);
+ cmdp+=2;
+ }
+ //Decimation
+ if(param_getchar(Cmd, cmdp) == 'd')
+ {
+ errors |= param_getdec(Cmd,cmdp+1,&decimation);
+ cmdp+=2;
+ }
+ //Averaging
+ if(param_getchar(Cmd, cmdp) == 'a')
+ {
+ averaging = param_getchar(Cmd,cmdp+1) == '1';
+ cmdp+=2;
+ }
+ //Validations
+ if(errors)
+ {
+ return CmdLFReadUsage();
+ }
+
+ //Bps is limited to 8, so fits in lower half of arg1
+ if(bps > 8) bps = 8;
+
+ //Feedback
+ PrintAndLog("Sampling config: ");
+ PrintAndLog(" divisor: %d ", divisor);
+ PrintAndLog(" bps: %d ", bps);
+ PrintAndLog(" decimation: %d ", decimation);
+ PrintAndLog(" averaging: %d ", averaging);
+ PrintAndLog("OBS, this is sticky on the device and affects all LF listening operations");
+ PrintAndLog("To reset, issue 'lf read'");
+
+ //And ship it to device
+ //Averaging is a flag on high-bit of arg[1]
+ UsbCommand c = {CMD_ACQUIRE_RAW_ADC_SAMPLES_125K};
+ c.arg[0] = divisor;
+ c.arg[1] = bps | (averaging << 7) ;
+ c.arg[2] = decimation;
+
+ SendCommand(&c);
+ WaitForResponse(CMD_ACK,NULL);
+ return 0;