on real car, GDI4 fails to start if HPFP is connected

[rusefillc]

real car. GDI rev 4 has two LEDs to blink
expected behavior: green OK led is blinking - it's really mostly

actual behavior: I power on or reset with HPFP it fails to init. Once HPFP disconnected it I have chip.init() working just fine

	isOverallHappyStatus = chip.init();

    while (true) {
        if (isOverallHappyStatus) {
            // happy board - green D21 blinking
            palTogglePad(LED_GREEN_PORT, LED_GREEN_PIN);
        } else {
            palTogglePad(LED_BLUE_PORT, LED_BLUE_PIN);
        }

[rusefillc]

error codes rusefi/libfirmware@11612c6

current error is UnderVoltage7 = 7

[rusefillc]

I am able to reproduce with both rev A and rev D on the bench. GDI4 fails to initialize the chip as long as I have three injectors just connected to the board - one acting as fake HPFP and two others have to be on different banks.

[rusefillc]

[rusefillc]

rusefi/libfirmware@45ccd8e

status2=0x4000

Noxz
2:31 PM
basically it says that the VccP voltage was "stable" for a lesser amount of time than required before further booting

[rusefillc]

@mck1117 says "what was happening is that with the added load(s) you were getting a transient during the reset that was tripping undervolt, and we never reset it"