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adjust em4x05/em4x69 command timings to...

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better conform to datasheet.
This commit is contained in:
marshmellow42 2017-02-28 13:18:52 -05:00
parent dda5a928f0
commit 62a38cc883
1 changed files with 4 additions and 4 deletions
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8
armsrc/lfops.c
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@ -1578,9 +1578,9 @@ void SendForward(uint8_t fwd_bit_count) {
fwd_bit_sz--; //prepare next bit modulation fwd_bit_sz--; //prepare next bit modulation
fwd_write_ptr++; fwd_write_ptr++;
FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
WaitUS(55*8); //55 cycles off (8us each)for 4305 /another reader has 37 here... WaitUS(55*8); //55 cycles off (8us each)for 4305 //another reader has 37 here...
FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);//field on FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);//field on
WaitUS(18*8); //16 cycles on (8us each) // another reader has 18 here WaitUS(18*8); //18 cycles on (8us each)
// now start writting // now start writting
while(fwd_bit_sz-- > 0) { //prepare next bit modulation while(fwd_bit_sz-- > 0) { //prepare next bit modulation
@ -1589,9 +1589,9 @@ void SendForward(uint8_t fwd_bit_count) {
else { else {
//These timings work for 4469/4269/4305 (with the 55*8 above) //These timings work for 4469/4269/4305 (with the 55*8 above)
FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
WaitUS(23*8); //16-4 cycles off (8us each) //23 //one reader goes as high as 25 here WaitUS(23*8); //23 cycles off (8us each)
FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);//field on FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);//field on
WaitUS(16*8); //16 cycles on (8us each) //9 // another reader goes to 17 here WaitUS(18*8); //18 cycles on (8us each)
} }
} }
} }