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More reorganization [nfc]

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This commit is contained in:
Allen Hill
2023-09-02 22:18:11 -04:00
parent 9581957eca
commit b9bae7a65f
3 changed files with 44 additions and 133 deletions
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src/sniffer.c
+32 -22
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@@ -34,8 +34,10 @@
#define EV_STATUS 4
uint8_t Event;
uint8_t echoCharacters;
void Setup();
void general_GPIO_init();
int main() {
uint8_t readSeq = 0;
@@ -215,27 +217,7 @@ void Setup() {
printAllFrames = 1;
echoCharacters = 1;
// Handle unconnected pins PA3, PB3-5
// Set as inputs
PORTA.DIRCLR = PIN3_bm;
PORTB.DIRCLR = (PIN3_bm | PIN4_bm | PIN5_bm);
// Enable pull-up resistor and disable input buffer (reduces any EM caused pin
// toggling and saves power)
PORTA.PIN3CTRL = PORT_PULLUPEN_bm | PORT_ISC_INPUT_DISABLE_gc;
PORTB.PIN3CTRL = PORT_PULLUPEN_bm | PORT_ISC_INPUT_DISABLE_gc;
PORTB.PIN4CTRL = PORT_PULLUPEN_bm | PORT_ISC_INPUT_DISABLE_gc;
PORTB.PIN5CTRL = PORT_PULLUPEN_bm | PORT_ISC_INPUT_DISABLE_gc;
// Output only pins: PA4-5, PC0-1, PC3, PB2
// TODO: TxD (PA1), RTS (PB0) is output only, test if RxD needs the input
// buffer or if the UART peripheral bypasses it
PORTA.PIN4CTRL = PORT_ISC_INPUT_DISABLE_gc;
PORTA.PIN5CTRL = PORT_ISC_INPUT_DISABLE_gc;
PORTC.PIN0CTRL = PORT_ISC_INPUT_DISABLE_gc;
PORTC.PIN1CTRL = PORT_ISC_INPUT_DISABLE_gc;
PORTC.PIN3CTRL = PORT_ISC_INPUT_DISABLE_gc;
PORTB.PIN2CTRL = PORT_ISC_INPUT_DISABLE_gc;
general_GPIO_init();
// Setup RTC as 1 sec periodic timer
loop_until_bit_is_clear(RTC_STATUS, RTC_CTRLABUSY_bp);
@@ -247,12 +229,40 @@ void Setup() {
RS232_Init();
AVCLan_Init();
AVCLAN_init();
Event = EV_NOTHING;
sei();
}
/* Configure pin settings which are not configured by peripherals */
void general_GPIO_init() {
// Set pins PC2-3, PB0,3-5 as inputs
PORTC.DIRCLR = (PIN2_bm | // Unconnected
PIN3_bm); // CTS
PORTB.DIRCLR = (PIN0_bm | // Unconnected
PIN3_bm | // IGN_SENSE
PIN4_bm | // Unused, but connected to WOC (PC0)
PIN5_bm); // Unused, but connected to WOD (PC1)
// Enable pull-up resistor and disable input buffer (reduces any EM caused pin
// toggling and saves power) for unused and unconnected pins
PORTC.PIN2CTRL = PORT_PULLUPEN_bm | PORT_ISC_INPUT_DISABLE_gc;
PORTB.PIN0CTRL = PORT_PULLUPEN_bm | PORT_ISC_INPUT_DISABLE_gc;
// Output only pins: PA3-5, PB1-2,4-5; PC0-1
// TODO: TxD (PA1), RTS (PA3) is output only, test if RxD needs the input
// buffer or if the UART peripheral bypasses it
PORTA.PIN3CTRL = PORT_ISC_INPUT_DISABLE_gc; // RTS
PORTA.PIN4CTRL = PORT_ISC_INPUT_DISABLE_gc; // WOA
PORTA.PIN5CTRL = PORT_ISC_INPUT_DISABLE_gc; // WOB
PORTB.PIN1CTRL = PORT_ISC_INPUT_DISABLE_gc; // MIC_CONTROL
PORTB.PIN4CTRL = PORT_ISC_INPUT_DISABLE_gc; // non-driving WOC
PORTB.PIN5CTRL = PORT_ISC_INPUT_DISABLE_gc; // non-driving WOD
PORTC.PIN0CTRL = PORT_ISC_INPUT_DISABLE_gc; // WOC
PORTC.PIN1CTRL = PORT_ISC_INPUT_DISABLE_gc; // WOD
}
// Periodic interrupt with a 1 sec period
ISR(RTC_PIT_vect) {
if (CD_Mode == stPlay) {