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Merge pull request #5798 from jerryneedell/jerryn_gpio 

Broadcom: Set JTAG pins to Pull Down on initialization
This commit is contained in:
Scott Shawcroft 2022-01-04 11:10:00 -08:00 committed by GitHub
parent 3459428843 14815f6de7
commit 9a9893f3fc
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 2 additions and 3 deletions
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5
ports/broadcom/common-hal/microcontroller/Pin.c
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@ -48,14 +48,13 @@ void reset_pin_number(uint8_t pin_number) {
pin_in_use[pin_number] = false;
never_reset_pin[pin_number] = false;
// Reset JTAG pins back to JTAG.
BP_PULL_Enum pull = BP_PULL_NONE;
if (22 <= pin_number && pin_number <= 27) {
gpio_set_function(pin_number, GPIO_FUNCTION_ALT4);
return;
} else {
gpio_set_function(pin_number, GPIO_FUNCTION_INPUT);
}
// Set the pull to match the datasheet.
BP_PULL_Enum pull = BP_PULL_NONE;
if (pin_number < 9 ||
(33 < pin_number && pin_number < 37) ||
pin_number > 45) {
@ -65,7 +64,7 @@ void reset_pin_number(uint8_t pin_number) {
pin_number != 44 &&
pin_number != 45) {
// Most pins are pulled low so we only exclude the four pins that aren't
// pulled at all.
// pulled at all. This will also set the JTAG pins 22-27
pull = BP_PULL_DOWN;
}
gpio_set_pull(pin_number, pull);