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update em4x05 timing (#846)

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See @mwalker33 issue #838
This commit is contained in:
marshmellow42 2019-07-11 14:31:51 -04:00 • committed by pwpiwi
parent 4d8a07c829
commit 817611f565
1 changed files with 2 additions and 2 deletions
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4
armsrc/lfops.c
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@ -1907,7 +1907,7 @@ void SendForward(uint8_t fwd_bit_count) {
FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);//field on
WaitUS(18*8); //18 cycles on (8us each)
// now start writting
// now start writting - each bit should be 32*8 total length
while(fwd_bit_sz-- > 0) { //prepare next bit modulation
if(((*fwd_write_ptr++) & 1) == 1)
WaitUS(32*8); //32 cycles at 125Khz (8us each)
@ -1916,7 +1916,7 @@ void SendForward(uint8_t fwd_bit_count) {
FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
WaitUS(23*8); //23 cycles off (8us each)
FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);//field on
WaitUS(18*8); //18 cycles on (8us each)
WaitUS((32-23)*8); //remaining cycles on (8us each)
}
}
}