【RA4L1-SENSOR】+ 驱动段式LCD显示屏显示ADC电压

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2025-6-22 07:53:45

1446 lcd adc

一、简介

Renesas RA4L1 微控制器（MCU）内置 Segment LCD Controller (SLCDC)，可直接驱动静态、1/2、1/3、1/4 Bias 的段式 LCD 显示屏，无需额外的 LCD 驱动芯片。

二、LCD显示器

LCD引脚图

三、LCD硬件电路

板子上LCD驱动部分硬件电路图

四、配置

4.1、配置slcd驱动参数

4.2、配置引脚

根据slcd硬件电路，选择对应的驱动引脚

五、程序部分

5.1、fun_slcd.c

#include "hal_data.h"

const uint8_t slcd_m[][2] =
{
	0x0D,0x07,  //0
	0x00,0x06,  //1
	0x0e,0x03,  //2
	0x0a,0x07,  //3
	0x03,0x06,  //4
	0x0B,0x05,  //5
	0x0F,0x05,  //6
	0x00,0x07,  //7
	0x0F,0x07,  //8
	0x0B,0x07,  //9
	0x00,0x00,  //" "  10
	0x0c,0x04,  //"v"  11  
	
};

void init_slcd(void)
{
	fsp_err_t err;
  err = R_SLCDC_Open(&g_slcdc0_ctrl, &g_slcdc0_cfg);
  assert(FSP_SUCCESS == err);
	R_BSP_SoftwareDelay(5, BSP_DELAY_UNITS_MILLISECONDS);
	err = R_SLCDC_Start(&g_slcdc0_ctrl);
  assert(FSP_SUCCESS == err);
}

void  lcd_disp_adv(uint16_t adv)
{
	uint8_t adv_h=0;
  uint8_t adv_l1=0;
	uint8_t adv_l2=0;
	
	adv_h = adv/100;
	adv_l1 = (adv%100)/10;
	adv_l2 = (adv%100)%10;
	R_SLCDC_Modify(&g_slcdc0_ctrl, 3, slcd_m[10][0], 0xF);  //bit1
	R_SLCDC_Modify(&g_slcdc0_ctrl, 11,slcd_m[10][1], 0xF);
	
	R_SLCDC_Modify(&g_slcdc0_ctrl, 15, slcd_m[10][0], 0xF); //bit2
	R_SLCDC_Modify(&g_slcdc0_ctrl, 16, slcd_m[10][1], 0xF);
	
	R_SLCDC_Modify(&g_slcdc0_ctrl, 22, slcd_m[10][0], 0xF); //bit3
	R_SLCDC_Modify(&g_slcdc0_ctrl, 23, slcd_m[10][1], 0xF);

	R_SLCDC_Modify(&g_slcdc0_ctrl, 24, slcd_m[adv_h][0], 0xF);//bit4
	R_SLCDC_Modify(&g_slcdc0_ctrl, 29, slcd_m[adv_h][1]|0x08, 0xF);

	R_SLCDC_Modify(&g_slcdc0_ctrl, 30, slcd_m[adv_l1][0], 0xF);//bit5
	R_SLCDC_Modify(&g_slcdc0_ctrl, 39, slcd_m[adv_l1][1], 0xF);
	
	R_SLCDC_Modify(&g_slcdc0_ctrl, 40, slcd_m[adv_l2][0], 0xF);		//bit6
	R_SLCDC_Modify(&g_slcdc0_ctrl, 41, slcd_m[adv_l2][1], 0xF);
}

5.2、fun_slcd.h

#ifndef FUN_SLCD_H_
#define FUN_SLCD_H_

void init_slcd(void);
void  lcd_disp_adv(uint16_t adv);

#endif

5.3、hal_entry.c

void hal_entry(void)
{
	
	init_uart9();
	init_adc();
	init_slcd();

	while(1)
	{
		test_adc();
		R_IOPORT_PinWrite(&g_ioport_ctrl, BSP_IO_PORT_06_PIN_01, BSP_IO_LEVEL_HIGH);
		R_IOPORT_PinWrite(&g_ioport_ctrl, BSP_IO_PORT_06_PIN_10, BSP_IO_LEVEL_HIGH);
		R_IOPORT_PinWrite(&g_ioport_ctrl, BSP_IO_PORT_06_PIN_09, BSP_IO_LEVEL_HIGH);

		R_BSP_SoftwareDelay (500, BSP_DELAY_UNITS_MILLISECONDS);

		R_IOPORT_PinWrite(&g_ioport_ctrl, BSP_IO_PORT_06_PIN_01, BSP_IO_LEVEL_LOW);
		R_IOPORT_PinWrite(&g_ioport_ctrl, BSP_IO_PORT_06_PIN_10, BSP_IO_LEVEL_LOW);
		R_IOPORT_PinWrite(&g_ioport_ctrl, BSP_IO_PORT_06_PIN_09, BSP_IO_LEVEL_LOW);
		R_BSP_SoftwareDelay (500, BSP_DELAY_UNITS_MILLISECONDS);
	}


#if BSP_TZ_SECURE_BUILD
    /* Enter non-secure code */
    R_BSP_NonSecureEnter();
#endif
}

5.4、fun_adc.c

void test_adc(void)
{
	
	fsp_err_t err;
	uint16_t adc_data25=0;
	double a25;
	uint16_t adv=0;
	/* Enable scan triggering from ELC events. */
	(void) R_ADC_ScanStart(&g_adc0_ctrl);
	scan_complete_flag = false;
	while (!scan_complete_flag)
	{
			/* Wait for callback to set flag. */
	}

	err = R_ADC_Read(&g_adc0_ctrl, ADC_CHANNEL_25, &adc_data25);
 // assert(FSP_SUCCESS == err);
	a25=(double)(adc_data25/4095.0)*3.3;
	adv=(uint8_t)(a25*100); 
	printf("P510(AN25)=%d,voltage=%f adv=%d\\\\r\\\\n",adc_data25,a25,adv);
	
	lcd_disp_adv(adv);
}