1.8tft color screen test code (stm32f407ve)

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front said

I bought a piece on a treasure a few days ago stm32f407ve And a piece of 1.8 Inch color screen , But the color screen driver is f103 The driver , The differences between different chips are summarized in the modification process , Welcome to point out the mistakes .

One 、GPIO Initialization of port

stay stm32f103 in GPIO The initialization code of the port is as follows

	GPIO_InitTypeDef  GPIO_InitStructure;	      
	RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOB ,ENABLE);
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0| GPIO_Pin_10| GPIO_Pin_1;
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
	GPIO_Init(GPIOB, &GPIO_InitStructure);

stay stm32f407 in GPIO The initialization code of the port is as follows

	GPIO_InitTypeDef  GPIO_InitStructure;
    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB ,ENABLE);
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0| GPIO_Pin_10| GPIO_Pin_1;
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
	GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
	GPIO_Init(GPIOB, &GPIO_InitStructure);

You can see

1. The functions called when initializing the clock and the representatives io The variable name of the port has changed .
   RCC_APB2PeriphClockCmd ——> RCC_AHB1PeriphClockCmd
   RCC_APB2Periph_GPIOB ——> RCC_AHB1Periph_GPIOB
2. When setting the output mode ,f407 Of PP and OD No longer in GPIO_Mode Set in , And in the GPIO_OType Set in , Output mode Out Also became OUT.
   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
   ——> GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
   GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;

Two 、BSRR Register expression

stay stm32f103 in IO Port high and low level control code

// LCD pin position 1
#define LCD_LED_SET LCD_CTRLB->BSRR=LCD_LED 
#define LCD_RS_SET LCD_CTRLB->BSRR=LCD_RS 
#define LCD_RST_SET LCD_CTRLB->BSRR=LCD_RST 
// LCD pin position 0
#define LCD_LED_CLR LCD_CTRLB->BRR=LCD_LED 
#define LCD_RST_CLR LCD_CTRLB->BRR=LCD_RST
#define LCD_RS_CLR LCD_CTRLB->BRR=LCD_RS 

stay stm32f407 in IO Port high and low level control code

// LCD pin position 1
#define LCD_LED_SET LCD_CTRLB->BSRRL=LCD_LED 
#define LCD_RS_SET LCD_CTRLB->BSRRL=LCD_RS 
#define LCD_RST_SET LCD_CTRLB->BSRRL=LCD_RST 
// LCD pin position 0
#define LCD_LED_CLR LCD_CTRLB->BSRRH=LCD_LED 
#define LCD_RST_CLR LCD_CTRLB->BSRRH=LCD_RST
#define LCD_RS_CLR LCD_CTRLB->BSRRH=LCD_RS 

The contrast shows BSRR Turned into BSRRL,BRR Turned into BSRRH, The root cause is f407 Only by BSRR Registers can control the high and low levels of pins , Removed BRR register , stay BSRR Middle and high 16 Bit control low level , low 16 Bit control high .

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total junction

Because it's the same stm32 series , It only needs to modify a little difference to run smoothly , Test code click the link

link ：https://pan.baidu.com/s/1JX360H5ETkCBeDzesjyJng
Extraction code ：uin6