flywithu/Toyota-AVC-LAN
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Add toggleable verbose debugging messages and tweak/improve the serial interface

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This commit is contained in:
Allen Hill 2023-09-12 19:21:19 -04:00
parent 08f7fe934d
commit 18202c5264
3 changed files with 121 additions and 57 deletions
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106
src/avclandrv.c
View File

@ -128,6 +128,7 @@ uint16_t CD_ID;
uint16_t HU_ID;
uint8_t printAllFrames;
uint8_t verbose;
uint8_t playMode;
@ -538,45 +539,58 @@ uint8_t AVCLAN_readframe() {
uint8_t i;
uint8_t for_me = 0;
AVCLAN_frame_t frame = {};
AVCLAN_frame_t frame = {0};
// RS232_Print("$ ");
// TCCR1B |= (1 << CS11)|(1 << CS10); // Timer1 prescaler at 64
// TCNT1 = 0;
// TCNT0 = 0;
// while (INPUT_IS_SET) {
// if ( TCNT0 > 255 ) { // 170 us
// // TCCR1B = 0;
// // TCCR1B |= (1 << WGM12)|(1 << CS12); // Set CTC, prescaler at 256
// STARTEvent;
// RS232_Print("LAN>T1\n");
// return 0;
// }
// }
//
// if ( TCNT0 < 20 ) { // 20 us
// // TCCR1B = 0;
// // TCCR1B |= (1 << WGM12)|(1 << CS12);
// STARTEvent;
// RS232_Print("LAN>T2\n");
// return 0;
// }
uint8_t parity = 0;
uint8_t tmp = 0;
AVCLAN_readbits(&tmp, 1); // Start bit
TCB1.CNT = 0;
while (INPUT_IS_SET) {
if (TCB1.CNT > (uint16_t)AVCLAN_STARTBIT_LOGIC_0 * 1.2) {
STARTEvent;
return 0;
}
}
uint16_t startbitlen = TCB1.CNT;
if (startbitlen < (uint16_t)(AVCLAN_STARTBIT_LOGIC_0 * 0.8)) {
RS232_Print("ERR: Short start bit.\n");
STARTEvent;
return 0;
}
// Otherwise that was a start bit
AVCLAN_readbits((uint8_t *)&frame.broadcast, 1);
parity = AVCLAN_readbits(&frame.controller_addr, 12);
AVCLAN_readbits(&tmp, 1);
if (parity != tmp) {
if (parity != (tmp & 1)) {
RS232_Print("ERR: Bad controller addr. parity");
if (verbose) {
RS232_Print("; read 0x");
RS232_PrintHex12(frame.controller_addr);
RS232_Print(" and calculated parity=");
RS232_PrintHex4(parity);
RS232_Print(" but got ");
RS232_PrintHex4(tmp & 1);
}
RS232_Print(".\n");
STARTEvent;
return 0;
}
parity = AVCLAN_readbits(&frame.peripheral_addr, 12);
AVCLAN_readbits(&tmp, 1);
if (parity != tmp) {
if (parity != (tmp & 1)) {
RS232_Print("Bad peripheral addr. parity");
if (verbose) {
RS232_Print("; read 0x");
RS232_PrintHex12(frame.peripheral_addr);
RS232_Print(" and calculated parity=");
RS232_PrintHex4(parity);
RS232_Print(" but got ");
RS232_PrintHex4(tmp & 1);
}
RS232_Print(".\n");
STARTEvent;
return 0;
}
@ -591,7 +605,17 @@ uint8_t AVCLAN_readframe() {
parity = AVCLAN_readbits(&frame.control, 4);
AVCLAN_readbits(&tmp, 1);
if (parity != tmp) {
if (parity != (tmp & 1)) {
RS232_Print("Bad control parity");
if (verbose) {
RS232_Print("; read 0x");
RS232_PrintHex4(frame.control);
RS232_Print(" and calculated parity=");
RS232_PrintHex4(parity);
RS232_Print(" but got ");
RS232_PrintHex4(tmp & 1);
}
RS232_Print(".\n");
STARTEvent;
return 0;
} else if (for_me) {
@ -602,7 +626,17 @@ uint8_t AVCLAN_readframe() {
parity = AVCLAN_readbyte(&frame.length);
AVCLAN_readbits(&tmp, 1);
if (parity != tmp) {
if (parity != (tmp & 1)) {
RS232_Print("Bad length parity");
if (verbose) {
RS232_Print("; read 0x");
RS232_PrintHex4(frame.length);
RS232_Print(" and calculated parity=");
RS232_PrintHex4(parity);
RS232_Print(" but got ");
RS232_PrintHex4(tmp & 1);
}
RS232_Print(".\n");
STARTEvent;
return 0;
} else if (for_me) {
@ -611,8 +645,10 @@ uint8_t AVCLAN_readframe() {
AVCLAN_readbits(&tmp, 1);
}
if (frame.length > MAXMSGLEN) {
// RS232_Print("LAN> Command error");
if (frame.length == 0 || frame.length > MAXMSGLEN) {
RS232_Print("Bad length; got 0x");
RS232_PrintHex4(frame.length);
RS232_Print(".\n");
STARTEvent;
return 0;
}
@ -620,7 +656,17 @@ uint8_t AVCLAN_readframe() {
for (i = 0; i < frame.length; i++) {
parity = AVCLAN_readbyte(&frame.data[i]);
AVCLAN_readbits(&tmp, 1);
if (parity != tmp) {
if (parity != (tmp & 1)) {
RS232_Print("Bad data parity");
if (verbose) {
RS232_Print("; read 0x");
RS232_PrintHex4(frame.data[i]);
RS232_Print(" and calculated parity=");
RS232_PrintHex4(parity);
RS232_Print(" but got ");
RS232_PrintHex4(tmp & 1);
}
RS232_Print(".\n");
STARTEvent;
return 0;
} else if (for_me) {

1
src/avclandrv.h
View File

@ -49,6 +49,7 @@ extern uint16_t CD_ID; // CD Changer ID
extern uint16_t HU_ID; // Head-unit ID
extern uint8_t printAllFrames;
extern uint8_t verbose;
typedef enum {
cm_Null = 0,

71
src/sniffer.c
View File

@ -35,8 +35,11 @@
uint8_t Event;
uint8_t echoCharacters;
const char const *offon[] = {"OFF", "ON"};
void Setup();
void general_GPIO_init();
void print_help();
int main() {
uint8_t readSeq = 0;
@ -53,17 +56,7 @@ int main() {
};
Setup();
RS232_Print("AVCLan reader 1.00\nReady\n\n");
RS232_Print("\nS - read sequence\nW - send command\nQ - send "
"broadcast\nL/l - log on/off\nK/k - seq. echo on/off\n");
RS232_Print("R/r - register device\nB - Beep\n");
#ifdef HARDWARE_DEBUG
RS232_Print("1 - Hold High/low\nE - Print line status\n");
#endif
#ifdef SOFTWARE_DEBUG
RS232_Print("M - Measure high and low lengths\n");
#endif
print_help();
while (1) {
@ -87,13 +80,15 @@ int main() {
// Key handler
if (RS232_RxCharEnd) {
cli();
readkey = RS232_RxCharBuffer[RS232_RxCharBegin]; // read begin of received
// Buffer
readkey = RS232_RxCharBuffer[RS232_RxCharBegin];
RS232_RxCharBegin++;
if (RS232_RxCharBegin == RS232_RxCharEnd) // if Buffer is empty
RS232_RxCharBegin = RS232_RxCharEnd = 0; // reset Buffer
if (RS232_RxCharBegin == RS232_RxCharEnd) // if buffer is consumed
RS232_RxCharBegin = RS232_RxCharEnd = 0; // reset buffer
sei();
switch (readkey) {
case '?':
print_help();
break;
case 'S': // Read sequence
printAllFrames = 0;
RS232_Print("READ SEQUENCE > \n");
@ -128,21 +123,23 @@ int main() {
case 'r': // Register into the abyss
AVCLan_Register();
break;
case 'l': // Print received messages
RS232_Print("Log OFF\n");
printAllFrames = 0;
case 'v':
verbose ^= 1;
RS232_Print("Verbose: ");
RS232_Print(offon[verbose]);
RS232_Print("\n");
break;
case 'L':
RS232_Print("Log ON\n");
printAllFrames = 1;
case 'l': // Print received messages
printAllFrames ^= 1;
RS232_Print("Logging:");
RS232_Print(offon[printAllFrames]);
RS232_Print("\n");
break;
case 'k': // Echo input
RS232_Print("str OFF\n");
echoCharacters = 0;
break;
case 'K':
RS232_Print("str ON\n");
echoCharacters = 1;
echoCharacters ^= 1;
RS232_Print("Echo characters:");
RS232_Print(offon[echoCharacters]);
RS232_Print("\n");
break;
case 'B': // Beep
data_tmp[0] = 0x00;
@ -266,6 +263,26 @@ void general_GPIO_init() {
PORTC.PIN1CTRL = PORT_ISC_INPUT_DISABLE_gc; // WOD
}
void print_help() {
RS232_Print("AVCLAN Mockingboard v1\n");
RS232_Print("S - read sequence\n"
"W - send command\n"
"Q - send broadcast\n"
"l - Toggle message logging\n"
"k - Toggle character echo\n"
"R/r - register device\n"
"B - Beep\n"
"v - Toggle verbose logging\n"
#ifdef SOFTWARE_DEBUG
"M - Measure bit-timing (pulse-widths and periods)\n"
#endif
#ifdef HARDWARE_DEBUG
"1 - Hold High/low\n"
"E - Print line status\n"
#endif
"? - Print this message\n");
}
/* Increment packed 2-digit BCD number.
WARNING: Overflow behavior is incorrect (e.g. `incBCD(0x99) != 0x00`) */
uint8_t incBCD(uint8_t data) {