原创【瑞萨RL78/G15】+ 评测

 2023-9-17 22:34  1343 3 3 分类: MCU/ 嵌入式文集: 瑞萨

使用E2studio RL78编译环境

一. LED

跟51单片机类似需要手动初始化寄存器

在 output_ports_configure()函数里面初始化寄存器

/* Port mode registers
* 0 Output mode (output buffer on)
1 Input mode (output buffer off)
P
输出高低电平或者读取高低电平
PU
0 On-chip pull-up resistor not connected
1 On-chip pull-up resistor connected
POM 输出模式
0 Normal output mode
1 N-ch open-drain output (VDD tolerance) mode
*/
/* Add code here to setup additional output ports */
PM2 &= ~(1u<<0); /*设置为输出模式*/
P2 |= (1u<<0); /*输出为高电平*/
PU2 &= ~(1u<<0); /*不使用内部上拉*/
POM2 &= ~(1u<<0); /*正常输出模式*/
PMC2&= ~(1u<<0); /*数字IO，替代模拟输入*/
PM2 &= ~(1u<<1);
P2 |= (1u<<1);
PU2 &= ~(1u<<1);
POM2 &= ~(1u<<1);
PMC2&= ~(1u<<1);

主函数翻转LED

void delay(uintmax_t ms)
{
for (int i = 0; i < ms; i++)
{
BSP_NOP();
}
}
PIN_WRITE(2,0) = ~PIN_WRITE(2,0);
PIN_WRITE(2,1) = ~PIN_WRITE(2,1);
/* 延时1s*/
delay(get_fclk_freq_hz());

二.按键控制LED
按键引脚P137默认是输入，不用初始化

/* 按键按下，灯亮，按键按下灯灭*/
uint8_t ping_state = 0;
ping_state = P13_bit.no7;
if (!ping_state)
{
delay(get_fclk_freq_hz() / 100);
if (!ping_state)
{
P2_bit.no0 = 0;
P2_bit.no1 = 0;
}
}else
{
P2_bit.no0 = 1;
P2_bit.no1 = 1;
}

三.按键中断
设置引脚为中断模式

static void interrupts_configure(void)
{
/* Add code here to setup additional interrupts */
/* P137/INTP0
*
*/
EGP0_bit.no0 = 1; /* P137双边沿触发*/
EGN0_bit.no0 = 1;
MK0L_bit.no1 = 0; /* 使用中断服务函数*/
BSP_NOP();
} /* End of function interrupts_configure() */

四.OLED显示

引脚初始化

PM0_bit.no6 = 0; /*设置为输出模式*/
PM0_bit.no7 = 0;
P0_bit.no6 = 1; /*输出为高电平*/
P0_bit.no7 = 1;
PU0_bit.no6 = 0; /*不使用内部上拉*/
PU0_bit.no7 = 0;
POM0_bit.no6 = 0; /*开漏输出模式*/
POM0_bit.no7 = 0;
PMC0_bit.no6 = 0; /*数字IO，替代模拟输入*/
PMC0_bit.no7 = 0;

Oled初始化

OLED_WR_Byte(0xAE,OLED_CMD);//--turn off oled panel
OLED_WR_Byte(0x00,OLED_CMD);//---set low column address
OLED_WR_Byte(0x10,OLED_CMD);//---set high column address
OLED_WR_Byte(0x40,OLED_CMD);//--set start line address Set Mapping RAM Display Start Line (0x00~0x3F)
OLED_WR_Byte(0x81,OLED_CMD);//--set contrast control register
OLED_WR_Byte(0xCF,OLED_CMD);// Set SEG Output Current Brightness
OLED_WR_Byte(0xA1,OLED_CMD);//--Set SEG/Column Mapping 0xa0左右反置 0xa1正常
OLED_WR_Byte(0xC8,OLED_CMD);//Set COM/Row Scan Direction 0xc0上下反置 0xc8正常
OLED_WR_Byte(0xA6,OLED_CMD);//--set normal display
OLED_WR_Byte(0xA8,OLED_CMD);//--set multiplex ratio(1 to 64)
OLED_WR_Byte(0x3f,OLED_CMD);//--1/64 duty
OLED_WR_Byte(0xD3,OLED_CMD);//-set display offset Shift Mapping RAM Counter (0x00~0x3F)
OLED_WR_Byte(0x00,OLED_CMD);//-not offset
OLED_WR_Byte(0xd5,OLED_CMD);//--set display clock divide ratio/oscillator frequency
OLED_WR_Byte(0x80,OLED_CMD);//--set divide ratio, Set Clock as 100 Frames/Sec
OLED_WR_Byte(0xD9,OLED_CMD);//--set pre-charge period
OLED_WR_Byte(0xF1,OLED_CMD);//Set Pre-Charge as 15 Clocks & Discharge as 1 Clock
OLED_WR_Byte(0xDA,OLED_CMD);//--set com pins hardware configuration
OLED_WR_Byte(0x12,OLED_CMD);
OLED_WR_Byte(0xDB,OLED_CMD);//--set vcomh
OLED_WR_Byte(0x40,OLED_CMD);//Set VCOM Deselect Level
OLED_WR_Byte(0x20,OLED_CMD);//-Set Page Addressing Mode (0x00/0x01/0x02)
OLED_WR_Byte(0x02,OLED_CMD);//
OLED_WR_Byte(0x8D,OLED_CMD);//--set Charge Pump enable/disable
OLED_WR_Byte(0x14,OLED_CMD);//--set(0x10) disable
OLED_WR_Byte(0xA4,OLED_CMD);// Disable Entire Display On (0xa4/0xa5)
OLED_WR_Byte(0xA6,OLED_CMD);// Disable Inverse Display On (0xa6/a7)
OLED_Clear();
OLED_WR_Byte(0xAF,OLED_CMD);
OLED_DisPlay_On();