This is a subroutine for a matrix keyboard I wrote, and I don't know where I went wrong.
Please help me.
void keyscan() { uchar h,l,temp; DDRD=0xf0; PORTD=0x0f; h=PIND0x0f;//rowif (h!=0x0f) { delay(10...
As an asynchronous dual-port SRAM, we take Cypress's [url=http://www.weeqoo.com/icstock/Detail-CY7C019.html]CY7C019[/url] as an example. The internal block diagram of [url=http://www.weeqoo.com/icstoc...
PIC Timer Usage
Using the timer gate timing mode1Configure the timer bit gate mode
2 Set interrupt priority, enable interrupt, andclear flag bit3. When the timer uses the peripheral pin, configure the...
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Microchip MCU
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