#include "config.h" #include "TactilityCore.h" #define TAG "tdeck" static bool tdeck_power_on() { gpio_config_t device_power_signal_config = { .pin_bit_mask = BIT64(TDECK_POWERON_GPIO), .mode = GPIO_MODE_OUTPUT, .pull_up_en = GPIO_PULLUP_DISABLE, .pull_down_en = GPIO_PULLDOWN_DISABLE, .intr_type = GPIO_INTR_DISABLE, }; if (gpio_config(&device_power_signal_config) != ESP_OK) { return false; } if (gpio_set_level(TDECK_POWERON_GPIO, 1) != ESP_OK) { return false; } return true; } bool tdeck_init_power() { ESP_LOGI(TAG, "Power on"); if (!tdeck_power_on()) { TT_LOG_E(TAG, "Power on failed"); return false; } /** * Without this delay, the touch driver randomly fails when the device is USB-powered: * > lcd_panel.io.i2c: panel_io_i2c_rx_buffer(135): i2c transaction failed * > GT911: touch_gt911_read_cfg(352): GT911 read error! * This might not be a problem with a lipo, but I haven't been able to test that. * I tried to solve it just like I did with the keyboard: * By reading from I2C until it succeeds and to then init the driver. * It doesn't work, because it never recovers from the error. */ TT_LOG_I(TAG, "Waiting after power-on"); tt::delay_ms(TDECK_POWERON_DELAY); return true; }