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GPIO12 usable #268

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merged 1 commit into from
Dec 25, 2023
Merged

GPIO12 usable #268

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1 change: 1 addition & 0 deletions README.md
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Expand Up @@ -108,6 +108,7 @@ The following list is compiled from past experiences and GitHub issues:
* **The existing image fades / darkens when updating a partial screen region.** Make sure the VCOM voltage is [calibrated](https://epdiy.readthedocs.io/en/latest/getting_started.html#calibrate-vcom) for your specific display.
* **The second third of the image is replaced with the last third.** This seems to be a timing issue we could not yet quite figure out the reason for. For a workarround or suggestions please [join the discussion](https://github.com/vroland/epdiy/issues/15).
* **The ESP does not boot correctly when external periperals are connected.** Make sure not to pull GPIO12 high during boot, as it is a strapping pin internal voltage selection (https://github.com/vroland/epdiy/issues/17).
* **The ESP power consumption in deep sleep is too high.** Add `rtc_gpio_isolate(GPIO_NUM_12);` to your solution. See also [Configuring IOs (Deep-sleep Only)](https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/system/sleep_modes.html?highlight=rtc_gpio_isolate#configuring-ios-deep-sleep-only).

LilyGo Boards
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2 changes: 0 additions & 2 deletions src/output_i2s/i2s_data_bus.c
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Expand Up @@ -177,8 +177,6 @@ void i2s_gpio_detach(i2s_bus_config *cfg) {
if (cfg->clock != 5) {
rtc_gpio_isolate(cfg->clock);
}
// https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/peripherals/gpio.html#_CPPv416rtc_gpio_isolate10gpio_num_t
rtc_gpio_isolate(GPIO_NUM_12);
}

void i2s_bus_init(i2s_bus_config *cfg, uint32_t epd_row_width) {
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