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