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fix(core): fix model T FMC timing

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This commit is contained in:
tychovrahe 2022-12-19 14:29:09 +01:00 committed by TychoVrahe
parent e6feef5388
commit 3cc66301c3
1 changed files with 43 additions and 35 deletions
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78
core/embed/trezorhal/displays/st7789v.c
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@ -489,6 +489,44 @@ void display_init_seq(void) {
display_unsleep();
}
void display_setup_fmc(void) {
// Reference UM1725 "Description of STM32F4 HAL and LL drivers",
// section 64.2.1 "How to use this driver"
SRAM_HandleTypeDef external_display_data_sram;
external_display_data_sram.Instance = FMC_NORSRAM_DEVICE;
external_display_data_sram.Init.NSBank = FMC_NORSRAM_BANK1;
external_display_data_sram.Init.DataAddressMux = FMC_DATA_ADDRESS_MUX_DISABLE;
external_display_data_sram.Init.MemoryType = FMC_MEMORY_TYPE_SRAM;
external_display_data_sram.Init.MemoryDataWidth = FMC_NORSRAM_MEM_BUS_WIDTH_8;
external_display_data_sram.Init.BurstAccessMode =
FMC_BURST_ACCESS_MODE_DISABLE;
external_display_data_sram.Init.WaitSignalPolarity =
FMC_WAIT_SIGNAL_POLARITY_LOW;
external_display_data_sram.Init.WrapMode = FMC_WRAP_MODE_DISABLE;
external_display_data_sram.Init.WaitSignalActive = FMC_WAIT_TIMING_BEFORE_WS;
external_display_data_sram.Init.WriteOperation = FMC_WRITE_OPERATION_ENABLE;
external_display_data_sram.Init.WaitSignal = FMC_WAIT_SIGNAL_DISABLE;
external_display_data_sram.Init.ExtendedMode = FMC_EXTENDED_MODE_DISABLE;
external_display_data_sram.Init.AsynchronousWait =
FMC_ASYNCHRONOUS_WAIT_DISABLE;
external_display_data_sram.Init.WriteBurst = FMC_WRITE_BURST_DISABLE;
external_display_data_sram.Init.ContinuousClock =
FMC_CONTINUOUS_CLOCK_SYNC_ONLY;
external_display_data_sram.Init.PageSize = FMC_PAGE_SIZE_NONE;
// reference RM0090 section 37.5 Table 259, 37.5.4, Mode 1 SRAM, and 37.5.6
FMC_NORSRAM_TimingTypeDef normal_mode_timing;
normal_mode_timing.AddressSetupTime = 5;
normal_mode_timing.AddressHoldTime = 1; // don't care
normal_mode_timing.DataSetupTime = 6;
normal_mode_timing.BusTurnAroundDuration = 0; // don't care
normal_mode_timing.CLKDivision = 2; // don't care
normal_mode_timing.DataLatency = 2; // don't care
normal_mode_timing.AccessMode = FMC_ACCESS_MODE_A;
HAL_SRAM_Init(&external_display_data_sram, &normal_mode_timing, NULL);
}
void display_init(void) {
// init peripherals
__HAL_RCC_GPIOE_CLK_ENABLE();
@ -565,41 +603,7 @@ void display_init(void) {
GPIO_InitStructure.Pin = GPIO_PIN_7 | GPIO_PIN_8 | GPIO_PIN_9 | GPIO_PIN_10;
HAL_GPIO_Init(GPIOE, &GPIO_InitStructure);
// Reference UM1725 "Description of STM32F4 HAL and LL drivers",
// section 64.2.1 "How to use this driver"
SRAM_HandleTypeDef external_display_data_sram;
external_display_data_sram.Instance = FMC_NORSRAM_DEVICE;
external_display_data_sram.Init.NSBank = FMC_NORSRAM_BANK1;
external_display_data_sram.Init.DataAddressMux = FMC_DATA_ADDRESS_MUX_DISABLE;
external_display_data_sram.Init.MemoryType = FMC_MEMORY_TYPE_SRAM;
external_display_data_sram.Init.MemoryDataWidth = FMC_NORSRAM_MEM_BUS_WIDTH_8;
external_display_data_sram.Init.BurstAccessMode =
FMC_BURST_ACCESS_MODE_DISABLE;
external_display_data_sram.Init.WaitSignalPolarity =
FMC_WAIT_SIGNAL_POLARITY_LOW;
external_display_data_sram.Init.WrapMode = FMC_WRAP_MODE_DISABLE;
external_display_data_sram.Init.WaitSignalActive = FMC_WAIT_TIMING_BEFORE_WS;
external_display_data_sram.Init.WriteOperation = FMC_WRITE_OPERATION_ENABLE;
external_display_data_sram.Init.WaitSignal = FMC_WAIT_SIGNAL_DISABLE;
external_display_data_sram.Init.ExtendedMode = FMC_EXTENDED_MODE_DISABLE;
external_display_data_sram.Init.AsynchronousWait =
FMC_ASYNCHRONOUS_WAIT_DISABLE;
external_display_data_sram.Init.WriteBurst = FMC_WRITE_BURST_DISABLE;
external_display_data_sram.Init.ContinuousClock =
FMC_CONTINUOUS_CLOCK_SYNC_ONLY;
external_display_data_sram.Init.PageSize = FMC_PAGE_SIZE_NONE;
// reference RM0090 section 37.5 Table 259, 37.5.4, Mode 1 SRAM, and 37.5.6
FMC_NORSRAM_TimingTypeDef normal_mode_timing;
normal_mode_timing.AddressSetupTime = 4;
normal_mode_timing.AddressHoldTime = 1;
normal_mode_timing.DataSetupTime = 4;
normal_mode_timing.BusTurnAroundDuration = 0;
normal_mode_timing.CLKDivision = 2;
normal_mode_timing.DataLatency = 2;
normal_mode_timing.AccessMode = FMC_ACCESS_MODE_A;
HAL_SRAM_Init(&external_display_data_sram, &normal_mode_timing, NULL);
display_setup_fmc();
display_init_seq();
@ -607,6 +611,10 @@ void display_init(void) {
}
void display_reinit(void) {
// reinitialize FMC to set correct timing, have to do this in reinit because
// boardloader is fixed.
display_setup_fmc();
// important for model T as this is not set in boardloader
display_set_little_endian();