Dear Sir
I test the PN5180 reader IC, I have a question, the PN5180 busy line still to LOW.
The PN5180 write Timer0_reload register data can not BUSY line change to High.
I read the Timer0_reload register
SPI_CS=0;
(void)SPI_send(0x04);
(void)SPI_send(TIMER0_RELOAD);
SPI_CS=1;
delay_ms(100);
SPI_CS=0;
result[0]=SPI_send(0x00);
result[1]=SPI_send(0x00);
result[2]=SPI_send(0x00);
result[3]=SPI_send(0x00);
SPI_CS=1;
the result is right.
I trace the BUSY line by Oscilloscope, the BUSY line to LOW level
but I trace the PN5180 DEMO KIT. The BUSY line can from LOW to High.
Where is the problem?
Hi Li Ke,
Looks like you toggle the CS line during data exchange. Please kindly refer to the following for details.
Hope that helps,
Have a great day,
Kan
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