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display: hardware reset updates

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This commit is contained in:
mcudev 2017-11-11 11:14:15 -05:00
parent 61ff3b46c5
commit 5556c37f6f
1 changed files with 7 additions and 4 deletions
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11
embed/extmod/modtrezorui/display-stm32.h
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@ -97,7 +97,10 @@ void display_set_backlight(int val)
void display_hardware_reset(void)
{
HAL_GPIO_WritePin(GPIOC, GPIO_PIN_14, GPIO_PIN_RESET); // LCD_RST/PC14
HAL_Delay(1); // wait 1 millisecond. only needs to be low for 10 microseconds.
// wait 10 milliseconds. only needs to be low for 10 microseconds.
// my dev display module ties display reset and touch panel reset together.
// keeping this low for max(display_reset_time, ctpm_reset_time) aids development and does not hurt.
HAL_Delay(10);
HAL_GPIO_WritePin(GPIOC, GPIO_PIN_14, GPIO_PIN_SET); // LCD_RST/PC14
HAL_Delay(120); // max wait time for hardware reset is 120 milliseconds (experienced display flakiness using only 5ms wait before sending commands)
}
@ -147,12 +150,12 @@ void display_init(void)
// LCD_RST/PC14
GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStructure.Pull = GPIO_PULLUP;
GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
GPIO_InitStructure.Pull = GPIO_NOPULL;
GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_LOW;
GPIO_InitStructure.Alternate = 0;
GPIO_InitStructure.Pin = GPIO_PIN_14;
HAL_GPIO_WritePin(GPIOC, GPIO_PIN_14, GPIO_PIN_RESET); // default to keeping display in reset
HAL_GPIO_Init(GPIOC, &GPIO_InitStructure);
HAL_GPIO_WritePin(GPIOC, GPIO_PIN_14, GPIO_PIN_SET);
// LCD_FMARK/PD12 (tearing effect)
GPIO_InitStructure.Mode = GPIO_MODE_INPUT;