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Porting display project. It works with image crafts compiler But not with IAR compiler. Any ideas what the problem be?

RLind.2
Associate II

‎2021-02-12 5:50 AM

We are porting a display-project from Imagecraft-compiler to IAR-compiler for the STM32F446-chip. This is the most vital bits of the LDC-drive (with ILI9488-chip). The pins are alive, checked by an oscilloscope (we don't have a logic analyzer) and the codes seem to be identical. Still no performance with the IAR-code. We can control a LED and serial ports with IAR so the compiler and download works. Any ideas?

the solution was:

The problem is solved and it seems to be the HAL-drive init of USART 3 to pin PC10 & PC11 that corrupts the initiation of PA2 and PA3 as general purpose outputs. PA2 and PA3 can also be routed to USART 3 but we use PORTA as a 16-bit parallel access to the LCD. By swapping order of initialization and first define USART 3 to PC10 & PC11 and then PORTA as parallel output it all works fine.

Working code on Imagecraft:

/* Writes 1 control-byte and then n data-bytes if n != 0 */
void LCDw_n_data( uint8_t cmd, const uint8_t *ptr, uint16_t n ) {
D_D_NC.Clear();
porta.Write( cmd );
D_WR.Clear();
D_WR.Set();
 
D_D_NC.Set();
while( n ) {
porta.Write( *ptr++ );
D_WR.Clear();
D_WR.Set();
n--;
}
}
/*-------------------------------------------------------------------------*/
uint16_t Background_col, Active_col;
 
const uint8_t str0A0A[2]={ 0x0A, 0x0A },
str4507[2] = { 0x45, 0x07},
str004280[3] = { 0x00, 0x42, 0x80 },
str00023B[3] = { 0x00, 0x02, 0x3B },
str36A5D3[3] = { 0x36, 0xA5, 0xD3 },
str36A553[3] = { 0x36, 0xA5, 0x53 },
Gamma[12] = {0x00,0x35,0x33,0x00,0x00,0x00,0x00,0x35,0x33,0x00,0x00,0x00};
 
void init_display( void ) {
// Hardware reset
D_RES.Clear();
waitXms( 1 );
D_RES.Set();
 
waitXms( 5 );
 
buf[0] = 0x80;
LCDw_n_data( 0xB0, buf, 1 );// Interface Mode Control
 
LCDw_n_data( 0xC0, str0A0A, 2 );// Power Control 1
 
LCDw_n_data( 0xC1, str4507, 2 );// Power Control 2
 
buf[0] = 0x33;
LCDw_n_data( 0xC2, buf, 1 );// Power Control 3
 
LCDw_n_data( 0xC5, str004280, 3 );// Power Control 4
 
LCDw_n_data( 0xB1, (uint8_t *)0, 0 );// Frame Rate Control
 
buf[0] = 0x02;
LCDw_n_data( 0xB4, buf, 1 );// Display Inversion Control
 
LCDw_n_data( 0xB6, str00023B, 3 );// Display Function Control
 
buf[0] = 0x07;
LCDw_n_data( 0xB7, buf, 1 );// Entry Mode Set
 
buf[0] = 0x4B; //0x8B original orientation 0x4B 180 degrees rotation
LCDw_n_data( 0x36, buf, 1 );// Memory Access Control
 
LCDw_n_data( 0xF0, str36A5D3, 3 );//
 
buf[0] = 0x80;
LCDw_n_data( 0xE5, buf, 1 );//
 
buf[0] = 0x01;
LCDw_n_data( 0xE5, buf, 1 );//
 
buf[0] = 0x00;
LCDw_n_data( 0xB3, buf, 1 );// Frame Rate Control
 
//buf[0] = 0x00;
LCDw_n_data( 0xE5, buf, 1 );//
 
LCDw_n_data( 0xF0, str36A553, 3 );//
 
LCDw_n_data( 0xE0, Gamma, 12 );//
 
buf[0] = 0x55;
LCDw_n_data( 0x3A, buf, 1 );// Interface Pixel Format
 
LCDw_n_data( 0x11, (uint8_t *)0, 0 ); // Sleep OUT
waitXms( 250 );
 
LCDw_n_data( 0x29, (uint8_t *)0, 0 ); // Display ON
 
Background_col = BLACK;
Active_col = WHITE;
 
bg_level( 3 ); // Full illumination of LCD
}
 
/***************************************************/

And this is the non-workig code for the IAR-compiler:

#define D_RD_lo HAL_GPIO_WritePin(GPIOC,GPIO_PIN_4,GPIO_PIN_RESET)
#define D_RD_hi HAL_GPIO_WritePin(GPIOC,GPIO_PIN_4,GPIO_PIN_SET)
 
#define D_WR_lo HAL_GPIO_WritePin(GPIOC,GPIO_PIN_5,GPIO_PIN_RESET)
#define D_WR_hi HAL_GPIO_WritePin(GPIOC,GPIO_PIN_5,GPIO_PIN_SET)
 
#define D_D_NC_lo HAL_GPIO_WritePin(GPIOC,GPIO_PIN_12,GPIO_PIN_RESET)
#define D_D_NC_hi HAL_GPIO_WritePin(GPIOC,GPIO_PIN_12,GPIO_PIN_SET)
 
#define D_RES_lo HAL_GPIO_WritePin(GPIOC,GPIO_PIN_13,GPIO_PIN_RESET)
#define D_RES_hi HAL_GPIO_WritePin(GPIOC,GPIO_PIN_13,GPIO_PIN_SET)
 
/*-------------------------------------------------------------------------*/
/* Writes 1 control-byte and then n data-bytes if n != 0 */
void LCDw_n_data( uint8_t cmd, const uint8_t *ptr, uint16_t n ) {
D_D_NC_lo;
GPIOA->ODR = cmd;
D_WR_lo;
D_WR_hi;
 
D_D_NC_hi;
while( n ) {
GPIOA->ODR = *ptr++;
D_WR_lo;
D_WR_hi;
n--;
}
}
/*-------------------------------------------------------------------------*/
uint16_t Background_col, Active_col;
 
const uint8_t str1717[2]={ 0x17, 0x17 };
const uint8_t str003A80[3] = { 0x00, 0x3A, 0x80 };
 
const uint8_t strA9512C82[4] = { 0xA9, 0x51, 0x2C, 0x82 };
const uint8_t Gamma1[15] = {0x01,0x13,0x1E,0x00,0x0D,0x03,0x3D,
0x55,0x4F,0x06,0x10,0x0B,0x2C,0x32,0x0F};
const uint8_t Gamma2[15] = {0x08,0x10,0x15,0x03,0x0E,0x03,0x32,
0x34,0x44,0x07,0x10,0x0E,0x23,0x2E,0x0F};
const uint8_t str00223B[3] = { 0x00, 0x22, 0x3B };
const uint8_t str0000013F[4] = { 0x00, 0x00, 0x01, 0x3F };
const uint8_t str000001DF[4] = { 0x00, 0x00, 0x01, 0xDF };
 
void init_display( void ) {
 
// Hardware reset
D_RES_hi;
waitXms( 1 );
D_RES_lo;
waitXms( 10 );
D_RES_hi;
waitXms( 120 );
 
LCDw_n_data( 0xC0, str1717, 2 );// Power Control 1
buf[0] = 0x44;
LCDw_n_data( 0xC1, buf, 1 );// Power Control 2
LCDw_n_data( 0xC5, str003A80, 3 );// Power Control 4
 
buf[0] = 0x48;
LCDw_n_data( 0x36, buf, 1 );
 
buf[0] = 0x55;
LCDw_n_data( 0x3A, buf, 1 ); //Interface Mode Control
 
buf[0] = 0xA0;
LCDw_n_data( 0xB1, buf, 1 );// Frame Rate Control
 
buf[0] = 0x02;
LCDw_n_data( 0xB4, buf, 1 );// Display Inversion Control
 
buf[0] = 0x00;
LCDw_n_data( 0xE9, buf, 1 );//
 
LCDw_n_data( 0xF7, strA9512C82, 4 );
 
LCDw_n_data( 0xE0, Gamma1, 15 );//
 
LCDw_n_data( 0xE1, Gamma2, 15 );//
 
LCDw_n_data( 0xB6, str00223B, 3 );// Set rgb interface mode
 
LCDw_n_data( 0x2A, str0000013F, 4 );// Frame rate control
 
LCDw_n_data( 0x2B, str000001DF, 4 );// Display Function Control
 
LCDw_n_data( 0x21, (uint8_t *)0, 0 ); //
 
//LCDw_n_data( 0x21, (uint8_t *)0, 0 ); //
 
buf[0] = 0x0B; // Memory access Control Flip horizontal and vertical (0x0B, 0x4B, 0x8B, 0xCB)
LCDw_n_data( 0x36, buf, 1 );
 
LCDw_n_data( 0x11, (uint8_t *)0, 0 ); // Sleep OUT
waitXms( 120 );
 
LCDw_n_data( 0x29, (uint8_t *)0, 0 ); // Display ON
 
LCDw_n_data( 0x2C, (uint8_t *)0, 0 ); //
 
Background_col = BLACK;
Active_col = WHITE;
 
bg_level( 3 ); // Full illumination of LCD
}
/*-------------------------------------------------------------------------*/
// The A-port connected to the display's 16-bit parallell-port
// PC4 → nRD, PC5 → nWR, PC12 → D/nC, PC13 → nRESET
 
/* Configure port A in/out */
__HAL_RCC_GPIOA_CLK_ENABLE();
 
GPIO_InitStruct.Pin = GPIO_PIN_All; // All pins are outputs
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
// GPIO_SPEED_LOW, GPIO_SPEED_MEDIUM, GPIO_SPEED_HIGH, GPIO_SPEED_FAST
GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
 
// Note parallell write: GPIOA->ODR = ui;
// and parallell read: ui = GPIOA->IDR;
 
/* Configure port C in/out */
__HAL_RCC_GPIOC_CLK_ENABLE();
 
// Define outputs
GPIO_InitStruct.Pin = 0xF7B0;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
 
// Write '1' to all normally high
HAL_GPIO_WritePin(GPIOC,0x3430,GPIO_PIN_SET);
 
/***************************************************/

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1 REPLY 1
Mike_ST
ST Employee

‎2021-02-12 6:50 AM

Hello,

"codes seem to be identical".

The bytes you are sending to the screen are not the same.

Reset sequence is longer on the non working code.

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