view Discovery/Src/display.c @ 634:7c73f066cd16

Enable sensor check for Analog PPO2 mode: Checks which may trigger a fallback warning were not activated in previous versions. Beside enabling the checks the test logic has been changed. Before the change an avarage was build automatically using the remaining both sensors if one sensor failed. The scenario that also one of the remaining sensors may be out of bounds was not covered. The new implementation allows an out of bounds detection for all sensors in parallel. In that special case the last valid value will be used until the diver takes action (Fallback warning)
author Ideenmodellierer
date Wed, 24 Feb 2021 19:18:26 +0100
parents 5ca177d2df5d
children f7318457df4d
line wrap: on
line source


#include "stm32f4xx_hal.h" /* for HAL_Delay() */
#include "ostc.h"
#include "display.h"

#define ENABLE_EXTENDED_COMMANDS	0xB9
#define SET_POWER									0xB1
#define SLEEP_OUT									0x11
#define DISPLAY_INVERSION_OFF			0x20
#define MEMORY_ACCESS_ONTROL			0x36
#define INTERFACE_PIXEL_FORMAT		0x3A
#define SET_RGB_INTERFACE_RELATED	0xB3
#define SET_DISPLAY_WAVEFORM			0xB4
#define SET_PANEL									0xCC
#define SET_GAMMA_CURVE_RELATED		0xE0
#define DISPLAY_ON								0x29
#define DISPLAY_OFF								0x28
#define SLEEP_IN									0x10


static void Display_Error_Handler(void);

void display_power_on__1_of_2__pre_RGB(void)
{
	/* reset system */ 
	HAL_GPIO_WritePin(DISPLAY_CSB_GPIO_PORT,DISPLAY_CSB_PIN,GPIO_PIN_SET); // chip select

	HAL_GPIO_WritePin(DISPLAY_RESETB_GPIO_PORT,DISPLAY_RESETB_PIN,GPIO_PIN_RESET);
	HAL_Delay(10);
	HAL_GPIO_WritePin(DISPLAY_RESETB_GPIO_PORT,DISPLAY_RESETB_PIN,GPIO_PIN_SET);
	HAL_Delay(10);

	/* RGB signals should be now for 2 frames or more (datasheet) */
}


static void send(uint8_t *pData, uint16_t inputlength)
{
	HAL_GPIO_WritePin(DISPLAY_CSB_GPIO_PORT,DISPLAY_CSB_PIN,GPIO_PIN_RESET); // chip select

	if(HAL_SPI_Transmit(&hspiDisplay,(uint8_t*)pData, inputlength, 10000) != HAL_OK)
		Display_Error_Handler();

	while (HAL_SPI_GetState(&hspiDisplay) != HAL_SPI_STATE_READY)
  {
  }
	HAL_GPIO_WritePin(DISPLAY_CSB_GPIO_PORT,DISPLAY_CSB_PIN,GPIO_PIN_SET); // chip select
}


static uint16_t convert8to9to8(uint8_t *pInput, uint8_t *pOutput,uint16_t inputlength)
{
	uint16_t outputlength;
	uint8_t readbit =  0x80;//0b1000000;
	uint8_t writebit = 0x40;//0b0100000;
	uint16_t i,j,k;

	outputlength = ((inputlength+7)/8)*9;

	for(i=0;i<outputlength;i++)
		pOutput[i] = 0;

	k = 0;
	for(i=0;i<inputlength;i++)
	{
		if(i != 0)
		{
			pOutput[k] |= writebit; // 9. bit
			writebit = writebit >> 1;
			if(writebit == 0)
			{
				writebit = 0x80;
				k++;
			}
		}
		for(j=0;j<8;j++)
		{
			if((pInput[i] & readbit) != 0)
			{
				pOutput[k] |= writebit;
			}
			readbit = readbit >> 1;
			if(readbit == 0)
				readbit = 0x80;
			writebit = writebit >> 1;
			if(writebit == 0)
			{
				writebit = 0x80;
				k++;
			}
		}
	}
	return outputlength;
}

void display_power_on__2_of_2__post_RGB(void)
{
	uint8_t aTxBuffer[32];
	uint8_t bTxBuffer[36];
	uint16_t i,length;

	for(i=0;i<32;i++)
		aTxBuffer[i] = 0;
	for(i=0;i<36;i++)
		bTxBuffer[i] = 0;

	aTxBuffer[0] = ENABLE_EXTENDED_COMMANDS;
	aTxBuffer[1] = 0xFF;
	aTxBuffer[2] = 0x83;
	aTxBuffer[3] = 0x63;
	length = convert8to9to8((uint8_t*)aTxBuffer,(uint8_t*)bTxBuffer,4);
	send((uint8_t*)bTxBuffer, length);

	aTxBuffer[0] = SET_POWER;
	aTxBuffer[1] = 0x81;
	aTxBuffer[2] = 0x24;
	aTxBuffer[3] = 0x04;
	aTxBuffer[4] = 0x02;
	aTxBuffer[5] = 0x02;
	aTxBuffer[6] = 0x03;
	aTxBuffer[7] = 0x10;
	aTxBuffer[8] = 0x10;
	aTxBuffer[9] = 0x34;
	aTxBuffer[10] = 0x3C;
	aTxBuffer[11] = 0x3F;
	aTxBuffer[12] = 0x3F;
	length = convert8to9to8((uint8_t*)aTxBuffer,(uint8_t*)bTxBuffer,13);
	send((uint8_t*)bTxBuffer, length);

	aTxBuffer[0] = SLEEP_OUT;
	length = convert8to9to8((uint8_t*)aTxBuffer,(uint8_t*)bTxBuffer,1);
	send((uint8_t*)bTxBuffer, length);
	HAL_Delay(5+1);

	aTxBuffer[0] = DISPLAY_INVERSION_OFF;
	length = convert8to9to8((uint8_t*)aTxBuffer,(uint8_t*)bTxBuffer,1);
	send((uint8_t*)bTxBuffer, length);

	aTxBuffer[0] = MEMORY_ACCESS_ONTROL;
	aTxBuffer[1] = 0x00;
	length = convert8to9to8((uint8_t*)aTxBuffer,(uint8_t*)bTxBuffer,2);
	send((uint8_t*)bTxBuffer, length);

	aTxBuffer[0] = INTERFACE_PIXEL_FORMAT;
	aTxBuffer[1] = 0x70;
	length = convert8to9to8((uint8_t*)aTxBuffer,(uint8_t*)bTxBuffer,2);
	send((uint8_t*)bTxBuffer, length);
	HAL_Delay(120+20);

	aTxBuffer[0] = SET_POWER;
	aTxBuffer[1] = 0x78;
	aTxBuffer[2] = 0x24;
	aTxBuffer[3] = 0x04,
	aTxBuffer[4] = 0x02;
	aTxBuffer[5] = 0x02;
	aTxBuffer[6] = 0x03;
	aTxBuffer[7] = 0x10;
	aTxBuffer[8] = 0x10;
	aTxBuffer[9] = 0x34;
	aTxBuffer[10] = 0x3C;
	aTxBuffer[11] = 0x3F;
	aTxBuffer[12] = 0x3F;
	length = convert8to9to8((uint8_t*)aTxBuffer,(uint8_t*)bTxBuffer,13);
	send((uint8_t*)bTxBuffer, length);

	aTxBuffer[0] = SET_RGB_INTERFACE_RELATED;
	aTxBuffer[1] = 0x01;
	length = convert8to9to8((uint8_t*)aTxBuffer,(uint8_t*)bTxBuffer,2);
	send((uint8_t*)bTxBuffer, length);

	aTxBuffer[0] = SET_DISPLAY_WAVEFORM;
	aTxBuffer[1] = 0x00;
	aTxBuffer[2] = 0x08;
	aTxBuffer[3] = 0x56;
	aTxBuffer[4] = 0x07;
	aTxBuffer[5] = 0x01;
	aTxBuffer[6] = 0x01;
	aTxBuffer[7] = 0x4D;
	aTxBuffer[8] = 0x01;
	aTxBuffer[9] = 0x42;
	length = convert8to9to8((uint8_t*)aTxBuffer,(uint8_t*)bTxBuffer,10);
	send((uint8_t*)bTxBuffer, length);

	aTxBuffer[0] = SET_PANEL;
	aTxBuffer[1] = 0x0B;
	length = convert8to9to8((uint8_t*)aTxBuffer,(uint8_t*)bTxBuffer,2);
	send((uint8_t*)bTxBuffer, length);

	aTxBuffer[0] = SET_GAMMA_CURVE_RELATED;
	aTxBuffer[1] = 0x01;
	aTxBuffer[2] = 0x48;
	aTxBuffer[3] = 0x4D;
	aTxBuffer[4] = 0x4E;
	aTxBuffer[5] = 0x58;
	aTxBuffer[6] = 0xF6;
	aTxBuffer[7] = 0x0B;
	aTxBuffer[8] = 0x4E;
	aTxBuffer[9] = 0x12;
	aTxBuffer[10] = 0xD5;
	aTxBuffer[11] = 0x15;
	aTxBuffer[12] = 0x95;
	aTxBuffer[13] = 0x55;
	aTxBuffer[14] = 0x8E;
	aTxBuffer[15] = 0x11;
	aTxBuffer[16] = 0x01;
	aTxBuffer[17] = 0x48;
	aTxBuffer[18] = 0x4D;
	aTxBuffer[19] = 0x55;
	aTxBuffer[20] = 0x5F;
	aTxBuffer[21] = 0xFD;
	aTxBuffer[22] = 0x0A;
	aTxBuffer[23] = 0x4E;
	aTxBuffer[24] = 0x51;
	aTxBuffer[25] = 0xD3;
	aTxBuffer[26] = 0x17;
	aTxBuffer[27] = 0x95;
	aTxBuffer[28] = 0x96;
	aTxBuffer[29] = 0x4E;
	aTxBuffer[30] = 0x11;
	length = convert8to9to8((uint8_t*)aTxBuffer,(uint8_t*)bTxBuffer,31);
	send((uint8_t*)bTxBuffer, length);
	HAL_Delay(5+1);

	aTxBuffer[0] = DISPLAY_ON;
	length = convert8to9to8((uint8_t*)aTxBuffer,(uint8_t*)bTxBuffer,1);
	send((uint8_t*)bTxBuffer, length);
}


static void Display_Error_Handler(void)
{
  while(1)
  {
  }
}