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Mc33 vccp uv (#1445) 

* mc33 flash check

* DI sanity checks for setting HV config

* mc33 VccP (7v) under voltage detection - before and after DRIVEN, useful for regulator broken - or DC-DC logic converter broken

Co-authored-by: Christopher W. Anderson <gitstuff@pswitch.com>
This commit is contained in:
NOx-z 2020-05-17 13:28:05 -07:00 committed by GitHub
parent 94e63e7c43
commit d43bc81c24
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 34 additions and 4 deletions
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35
firmware/hw_layer/mc33816.cpp
View File

@ -25,6 +25,7 @@
EXTERN_CONFIG;
static OutputPin chipSelect;
static OutputPin resetB;
static OutputPin driven;
@ -212,6 +213,10 @@ static unsigned short readDriverStatus(){
return driverStatus;
}
static bool checkUndervoltVccP(unsigned short driverStatus){
return (driverStatus & (1<<0));
}
static bool checkUndervoltV5(unsigned short driverStatus){
return (driverStatus & (1<<1));
}
@ -458,16 +463,18 @@ static void mcRestart() {
setup_spi();
mcClearDriverStatus();
mcClearDriverStatus(); // Initial clear necessary
mcDriverStatus = readDriverStatus();
if(checkUndervoltV5(mcDriverStatus)){
firmwareError(OBD_PCM_Processor_Fault, "MC33 5V Under-Voltage!");
mcShutdown();
return;
}
mcChipId = readId();
if (!validateChipId()) {
firmwareError(OBD_PCM_Processor_Fault, "No comm with MC33");
mcShutdown();
return;
}
@ -482,7 +489,7 @@ static void mcRestart() {
flag0after = efiReadPin(CONFIG(mc33816_flag0));
if (flag0before || !flag0after) {
firmwareError(OBD_PCM_Processor_Fault, "MC33 flag0 transition no buena");
mcShutdown();
return;
}
}
@ -491,22 +498,44 @@ static void mcRestart() {
download_register(REG_CH2); // download channel 2 register configurations
download_register(REG_IO); // download IO register configurations
download_register(REG_DIAG); // download diag register configuration
// Finished downloading, let's run the code
enable_flash();
if(!check_flash())
{
firmwareError(OBD_PCM_Processor_Fault, "MC33 no flash");
mcShutdown();
return;
}
mcDriverStatus = readDriverStatus();
if(checkUndervoltVccP(mcDriverStatus)){
firmwareError(OBD_PCM_Processor_Fault, "MC33 VccP (7V) Under-Voltage!");
mcShutdown();
return;
}
// Drive High Voltage if possible
setBoostVoltage(CONFIG(mc33_hvolt));
driven.setValue(1); // driven = HV
chThdSleepMilliseconds(10); // Give it a moment
mcDriverStatus = readDriverStatus();
if(!checkDrivenEnabled(mcDriverStatus)){
firmwareError(OBD_PCM_Processor_Fault, "MC33 Driven did not stick!");
mcShutdown();
return;
}
mcDriverStatus = readDriverStatus();
if(checkUndervoltVccP(mcDriverStatus)){
firmwareError(OBD_PCM_Processor_Fault, "MC33 VccP Under-Voltage After Driven"); // Likely DC-DC LS7 is dead!
mcShutdown();
return;
}
}
static void mcShutdown() {
driven.setValue(0); // ensure HV is off
resetB.setValue(0); // turn off the chip
}
#endif /* EFI_MC33816 */

1
firmware/hw_layer/mc33816.h
View File

@ -25,4 +25,5 @@ enum {
};
void initMc33816(Logging *logger);
static void mcShutdown();

2
firmware/hw_layer/mc33816_data.c
View File

@ -51,7 +51,7 @@ const unsigned short MC33816_data_RAM[128] =
const unsigned short MC33816_main_config[29] =
{
0x0003, 0x1FFE, 0x0000, 0x1200, 0x0000, 0x0000, 0x0001, 0x0000, 0x001F, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0001, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000
};