flywithu/Toyota-AVC-LAN
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Change sendbit timer config to optimize function length (insns)

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Allen Hill 2023-09-03 19:32:09 -04:00
parent ba27167b2e
commit ba40f96d44
1 changed files with 8 additions and 9 deletions
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17
src/avclandrv.c
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@ -191,10 +191,9 @@ void AVCLAN_init() {
PORTB.DIRSET = PIN2_bm; // Enable AC2 OUT for LED PORTB.DIRSET = PIN2_bm; // Enable AC2 OUT for LED
PORTB.PIN2CTRL = PORT_ISC_INPUT_DISABLE_gc; // Output only PORTB.PIN2CTRL = PORT_ISC_INPUT_DISABLE_gc; // Output only
TCB1.CTRLB = TCB_ASYNC_bm | TCB_CNTMODE_SINGLE_gc; // TCB1 for send bit timing
TCB1.EVCTRL = TCB_CAPTEI_bm; TCB1.CTRLB = TCB_CNTMODE_INT_gc;
TCB1.INTCTRL = TCB_CAPT_bm; TCB1.CCMP = 0xFFFF;
EVSYS.ASYNCUSER0 = EVSYS_ASYNCUSER0_ASYNCCH0_gc;
TCB1.CTRLA = TCB_CLKSEL_CLKDIV2_gc | TCB_ENABLE_bm; TCB1.CTRLA = TCB_CLKSEL_CLKDIV2_gc | TCB_ENABLE_bm;
answerReq = cm_Null; answerReq = cm_Null;
@ -225,15 +224,15 @@ uint8_t AVCLan_Read_Byte(uint8_t length, uint8_t *parity) {
} }
void set_AVC_logic_for(uint8_t val, uint16_t period) { void set_AVC_logic_for(uint8_t val, uint16_t period) {
if (val == 1) { TCB1.CNT = 0;
if (val) {
AVC_SET_LOGICAL_1(); AVC_SET_LOGICAL_1();
} else { } else {
AVC_SET_LOGICAL_0(); AVC_SET_LOGICAL_0();
} }
TCB1.CCMP = period; while (TCB1.CNT <= period) {};
EVSYS.ASYNCSTROBE = EVSYS_ASYNCCH0_0_bm;
loop_until_bit_is_set(TCB1_INTFLAGS, 0); return;
TCB1_INTFLAGS = 1;
} }
uint8_t AVCLan_Send_StartBit() { uint8_t AVCLan_Send_StartBit() {