Kevin O'Connor 116b304541 avr: Switch to input state prior to enabling pullup in gpio_in_reset() ...

If switching a pin from output low to input with pullup, there is an
intermediate state of either driven high or high impedance without a
pullup.  Similarly, when switching from output high to input without a
pullup, there is an intermediate state of either driven low or high
impedence with a pullup.  In both cases it is preferable for the
latter transition.

Also, calculate the final setting prior to making any changes to
reduce the time in that intermediate state.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>

2025-07-22 14:11:17 -04:00

..

adc.c

avr: Define PORTE on atmega328p

2021-08-14 22:00:17 -04:00

gpio.c

avr: Switch to input state prior to enabling pullup in gpio_in_reset()

2025-07-22 14:11:17 -04:00

gpio.h

i2c: handle errors at i2ccmds

2024-10-26 22:06:30 -04:00

hard_pwm.c

command: Always pass a string to the DECL_CONSTANT() macro

2019-03-17 19:38:18 -04:00

i2c.c

i2c: handle errors at i2ccmds

2024-10-26 22:06:30 -04:00

internal.h

avr: Split gpio.c into gpio.c, adc.c, hard_pwm.c, and spi.c

2018-11-20 12:58:33 -05:00

irq.h

avr: Do not use Idle mode

2018-04-28 21:26:42 -04:00

Kconfig

avr: enable small code size options for atmega32u4

2024-03-02 18:47:16 -05:00

main.c

command: Always pass a string to the DECL_CONSTANT() macro

2019-03-17 19:38:18 -04:00

Makefile

Kconfig: Add new WANT_ADC option to reduce code size

2025-04-16 13:54:44 -04:00

pgm.h

usb_cdc: Add support for usb_send_ep0_progmem()

2018-09-30 22:32:19 -04:00

serial.c

avr: Use enumerations for buses and reserve pins

2019-04-04 18:29:31 -04:00

spi.c

avr: Simplify spi mode setting

2019-05-07 23:02:20 -04:00

timer.c

sched: Improve timer vs task priority check

2024-10-26 22:09:14 -04:00

usbserial.c

avr: No need to define bootloader_request()

2022-12-30 21:28:32 -05:00

watchdog.c

build: Use compile_time_request system for init, tasks, and shutdown

2017-05-26 12:39:34 -04:00