first commit
This commit is contained in:
466
DEV/iic.c
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466
DEV/iic.c
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#include "iic.h"
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#include "stm32f10x.h"
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#include <stdint.h>
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const uint8_t Font6x8[][6] = {
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// SPACE (0x20)
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{0x00,0x00,0x00,0x00,0x00,0x00}, // ' '
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{0x00,0x00,0x5F,0x00,0x00,0x00}, // '!'
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{0x00,0x07,0x00,0x07,0x00,0x00}, // '"'
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{0x14,0x7F,0x14,0x7F,0x14,0x00}, // '#'
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{0x24,0x2A,0x7F,0x2A,0x12,0x00}, // '$'
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{0x23,0x13,0x08,0x64,0x62,0x00}, // '%'
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{0x36,0x49,0x55,0x22,0x50,0x00}, // '&'
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{0x00,0x05,0x03,0x00,0x00,0x00}, // '''
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{0x00,0x1C,0x22,0x41,0x00,0x00}, // '('
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{0x00,0x41,0x22,0x1C,0x00,0x00}, // ')'
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{0x14,0x08,0x3E,0x08,0x14,0x00}, // '*'
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{0x08,0x08,0x3E,0x08,0x08,0x00}, // '+'
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{0x00,0x50,0x30,0x00,0x00,0x00}, // ','
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{0x08,0x08,0x08,0x08,0x08,0x00}, // '-'
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{0x00,0x60,0x60,0x00,0x00,0x00}, // '.'
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{0x20,0x10,0x08,0x04,0x02,0x00}, // '/'
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{0x3E,0x51,0x49,0x45,0x3E,0x00}, // '0' (0x30)
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{0x00,0x42,0x7F,0x40,0x00,0x00}, // '1'
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{0x42,0x61,0x51,0x49,0x46,0x00}, // '2'
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{0x21,0x41,0x45,0x4B,0x31,0x00}, // '3'
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{0x18,0x14,0x12,0x7F,0x10,0x00}, // '4'
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{0x27,0x45,0x45,0x45,0x39,0x00}, // '5'
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{0x3C,0x4A,0x49,0x49,0x30,0x00}, // '6'
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{0x01,0x71,0x09,0x05,0x03,0x00}, // '7'
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{0x36,0x49,0x49,0x49,0x36,0x00}, // '8'
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{0x06,0x49,0x49,0x29,0x1E,0x00}, // '9'
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{0x00,0x36,0x36,0x00,0x00,0x00}, // ':' (0x3A)
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{0x00,0x56,0x36,0x00,0x00,0x00}, // ';'
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{0x08,0x14,0x22,0x41,0x00,0x00}, // '<'
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{0x14,0x14,0x14,0x14,0x14,0x00}, // '='
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{0x00,0x41,0x22,0x14,0x08,0x00}, // '>'
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{0x02,0x01,0x51,0x09,0x06,0x00}, // '?'
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{0x32,0x49,0x79,0x41,0x3E,0x00}, // '@' (0x40)
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{0x7E,0x11,0x11,0x11,0x7E,0x00}, // 'A'
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{0x7F,0x49,0x49,0x49,0x36,0x00}, // 'B'
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{0x3E,0x41,0x41,0x41,0x22,0x00}, // 'C'
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{0x7F,0x41,0x41,0x22,0x1C,0x00}, // 'D'
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{0x7F,0x49,0x49,0x49,0x41,0x00}, // 'E'
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{0x7F,0x09,0x09,0x09,0x01,0x00}, // 'F'
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{0x3E,0x41,0x49,0x49,0x7A,0x00}, // 'G'
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{0x7F,0x08,0x08,0x08,0x7F,0x00}, // 'H'
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{0x00,0x41,0x7F,0x41,0x00,0x00}, // 'I'
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{0x20,0x40,0x41,0x3F,0x01,0x00}, // 'J'
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{0x7F,0x08,0x14,0x22,0x41,0x00}, // 'K'
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{0x7F,0x40,0x40,0x40,0x40,0x00}, // 'L'
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{0x7F,0x02,0x0C,0x02,0x7F,0x00}, // 'M'
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{0x7F,0x04,0x08,0x10,0x7F,0x00}, // 'N'
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{0x3E,0x41,0x41,0x41,0x3E,0x00}, // 'O'
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{0x7F,0x09,0x09,0x09,0x06,0x00}, // 'P' (0x50)
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{0x3E,0x41,0x51,0x21,0x5E,0x00}, // 'Q'
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{0x7F,0x09,0x19,0x29,0x46,0x00}, // 'R'
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{0x46,0x49,0x49,0x49,0x31,0x00}, // 'S'
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{0x01,0x01,0x7F,0x01,0x01,0x00}, // 'T'
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{0x3F,0x40,0x40,0x40,0x3F,0x00}, // 'U'
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{0x1F,0x20,0x40,0x20,0x1F,0x00}, // 'V'
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{0x3F,0x40,0x38,0x40,0x3F,0x00}, // 'W'
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{0x63,0x14,0x08,0x14,0x63,0x00}, // 'X'
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{0x07,0x08,0x70,0x08,0x07,0x00}, // 'Y'
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{0x61,0x51,0x49,0x45,0x43,0x00}, // 'Z'
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{0x00,0x7F,0x41,0x41,0x00,0x00}, // '['
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{0x02,0x04,0x08,0x10,0x20,0x00}, // '\'
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{0x00,0x41,0x41,0x7F,0x00,0x00}, // ']'
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{0x04,0x02,0x01,0x02,0x04,0x00}, // '^'
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{0x80,0x80,0x80,0x80,0x80,0x00}, // '_'
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{0x00,0x03,0x05,0x00,0x00,0x00}, // '`'
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{0x20,0x54,0x54,0x54,0x78,0x00}, // 'a' (0x61)
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{0x7F,0x48,0x44,0x44,0x38,0x00}, // 'b'
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{0x38,0x44,0x44,0x44,0x20,0x00}, // 'c'
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{0x38,0x44,0x44,0x48,0x7F,0x00}, // 'd'
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{0x38,0x54,0x54,0x54,0x18,0x00}, // 'e'
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{0x08,0x7E,0x09,0x01,0x02,0x00}, // 'f'
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{0x0C,0x52,0x52,0x52,0x3E,0x00}, // 'g'
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{0x7F,0x08,0x04,0x04,0x78,0x00}, // 'h'
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{0x00,0x44,0x7D,0x40,0x00,0x00}, // 'i'
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{0x20,0x40,0x44,0x3D,0x00,0x00}, // 'j'
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{0x7F,0x10,0x28,0x44,0x00,0x00}, // 'k'
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{0x00,0x41,0x7F,0x40,0x00,0x00}, // 'l'
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{0x7C,0x04,0x18,0x04,0x78,0x00}, // 'm'
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{0x7C,0x08,0x04,0x04,0x78,0x00}, // 'n'
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{0x38,0x44,0x44,0x44,0x38,0x00}, // 'o'
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{0x7C,0x14,0x14,0x14,0x08,0x00}, // 'p' (0x70)
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{0x08,0x14,0x14,0x18,0x7C,0x00}, // 'q'
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{0x7C,0x08,0x04,0x04,0x08,0x00}, // 'r'
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{0x48,0x54,0x54,0x54,0x20,0x00}, // 's'
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{0x04,0x3F,0x44,0x40,0x20,0x00}, // 't'
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{0x3C,0x40,0x40,0x20,0x7C,0x00}, // 'u'
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{0x1C,0x20,0x40,0x20,0x1C,0x00}, // 'v'
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{0x3C,0x40,0x30,0x40,0x3C,0x00}, // 'w'
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{0x44,0x28,0x10,0x28,0x44,0x00}, // 'x'
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{0x0C,0x50,0x50,0x50,0x3C,0x00}, // 'y'
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{0x44,0x64,0x54,0x4C,0x44,0x00}, // 'z'
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{0x08,0x36,0x41,0x00,0x00,0x00}, // '{'
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{0x00,0x00,0x7F,0x00,0x00,0x00}, // '|'
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{0x00,0x41,0x36,0x08,0x00,0x00}, // '}'
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{0x02,0x01,0x02,0x04,0x02,0x00}, // '~'
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};
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#define OLED_WIDTH 128
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#define OLED_HEIGHT 64
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// OLED 显存，1bit 表示一个像素（黑白屏）
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// 128 * 64 / 8 = 1024 字节
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uint8_t OLED_GRAM[8][128]; // 8页，每页8行，共64行
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#define SDA_PIN GPIO_Pin_8
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#define SCL_PIN GPIO_Pin_9
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#define I2C_PORT GPIOB
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#define SDA_HIGH() GPIO_SetBits(I2C_PORT, SDA_PIN)
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#define SDA_LOW() GPIO_ResetBits(I2C_PORT, SDA_PIN)
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#define SCL_HIGH() GPIO_SetBits(I2C_PORT, SCL_PIN)
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#define SCL_LOW() GPIO_ResetBits(I2C_PORT, SCL_PIN)
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#define READ_SDA() GPIO_ReadInputDataBit(I2C_PORT, SDA_PIN)
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void delay(){
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__NOP();
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}
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void delay_us_simple(uint32_t us)
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{
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uint32_t i;
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while(us--)
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{
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for(i = 0; i < 8; i++); // 简单调整这个数字以匹配频率
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}
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}
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void delay_ms_simple(uint32_t ms)
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{
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while(ms--)
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{
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delay_us_simple(1000); // 1000 微秒 = 1 毫秒
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}
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}
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void IIC_GPIO_Init(void)
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{
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
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GPIO_InitTypeDef GPIO_InitStructure;
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GPIO_InitStructure.GPIO_Pin = SDA_PIN | SCL_PIN;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_OD; // ????
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GPIO_Init(I2C_PORT, &GPIO_InitStructure);
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SDA_HIGH();
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SCL_HIGH();
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}
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void IIC_Delay(void)
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{
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//delay(1); // 5us 延时，100kHz I2C
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}
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void IIC_Start(void)
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{
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SDA_HIGH();
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SCL_HIGH();
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IIC_Delay();
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SDA_LOW();
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IIC_Delay();
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SCL_LOW();
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IIC_Delay();
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}
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void IIC_Stop(void)
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{
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SDA_LOW();
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SCL_HIGH();
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IIC_Delay();
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SDA_HIGH();
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IIC_Delay();
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}
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void IIC_Send_Byte(uint8_t data)
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{
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for (int i = 0; i < 8; i++) {
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if (data & 0x80)
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SDA_HIGH();
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else
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SDA_LOW();
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data <<= 1;
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IIC_Delay();
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SCL_HIGH();
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IIC_Delay();
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SCL_LOW();
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IIC_Delay();
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}
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}
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uint8_t IIC_Read_Byte(uint8_t ack)
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{
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uint8_t data = 0;
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SDA_HIGH(); // 释放 SDA
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for (int i = 0; i < 8; i++) {
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data <<= 1;
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SCL_HIGH();
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IIC_Delay();
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if (READ_SDA()) data |= 1;
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SCL_LOW();
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IIC_Delay();
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}
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// 发送 ACK 或 NACK
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if (ack)
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SDA_LOW();
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else
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SDA_HIGH();
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IIC_Delay();
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SCL_HIGH();
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IIC_Delay();
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SCL_LOW();
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SDA_HIGH(); // 释放 SDA
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return data;
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}
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uint8_t IIC_Wait_Ack(void)
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{
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uint8_t timeout = 0;
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SDA_HIGH(); // 释放 SDA
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IIC_Delay();
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SCL_HIGH();
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IIC_Delay();
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while (READ_SDA()) {
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timeout++;
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if (timeout > 250) {
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IIC_Stop();
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return 1; // 失败
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}
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}
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SCL_LOW();
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return 0; // 成功
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}
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void IIC_Ack(void)
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{
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SDA_LOW();
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IIC_Delay();
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SCL_HIGH();
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IIC_Delay();
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SCL_LOW();
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SDA_HIGH();
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}
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void IIC_NAck(void)
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{
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SDA_HIGH();
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IIC_Delay();
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SCL_HIGH();
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IIC_Delay();
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SCL_LOW();
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}
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void OLED_WriteCommand(uint8_t cmd)
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{
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IIC_Start();
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IIC_Send_Byte(0x78); // I2C 地址
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IIC_Wait_Ack();
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IIC_Send_Byte(0x00); // 写命令
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IIC_Wait_Ack();
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IIC_Send_Byte(cmd);
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IIC_Wait_Ack();
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IIC_Stop();
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}
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void OLED_WriteData(uint8_t data)
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{
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IIC_Start();
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IIC_Send_Byte(0x78);
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IIC_Wait_Ack();
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IIC_Send_Byte(0x40); // 写数据
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IIC_Wait_Ack();
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IIC_Send_Byte(data);
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IIC_Wait_Ack();
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IIC_Stop();
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}
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void OLED_Fill(uint8_t data)
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{
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for(uint8_t page = 0; page < 8; page++)
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{
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OLED_WriteCommand(0xB0 + page); // 页地址
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OLED_WriteCommand(0x00); // 列低地址
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OLED_WriteCommand(0x10); // 列高地址
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for(uint8_t col = 0; col < 128; col++)
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{
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OLED_WriteData(data);
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}
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}
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}
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void OLED_Init(void)
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{
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delay_ms_simple(100); // 等待 OLED 上电稳定
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OLED_WriteCommand(0xAE); // 关闭显示
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OLED_WriteCommand(0x20); // 设置内存地址模式
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OLED_WriteCommand(0x10); // 00,水平地址模式; 01,垂直地址模式; 10,页地址模式（默认）
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OLED_WriteCommand(0xB0); // 设置页起始地址（0~7）
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OLED_WriteCommand(0xC8); // COM输出扫描方向：从 COM[N-1] 到 COM0
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OLED_WriteCommand(0x00); // 设置低列起始地址
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OLED_WriteCommand(0x10); // 设置高列起始地址
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OLED_WriteCommand(0x40); // 设置起始行地址（0~63）
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OLED_WriteCommand(0x81); // 对比度设置
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OLED_WriteCommand(0xFF); // 对比度值（0x00~0xFF）
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OLED_WriteCommand(0xA1); // 段重映射：正常（A0），反转（A1）
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OLED_WriteCommand(0xA6); // 显示正常（A6），反相显示（A7）
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OLED_WriteCommand(0xA8); // 多路复用率
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OLED_WriteCommand(0x3F); // 1/64 duty（0x3F）
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OLED_WriteCommand(0xA4); // 全局显示开启，输出跟随 RAM 内容
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OLED_WriteCommand(0xD3); // 设置显示偏移
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OLED_WriteCommand(0x00); // 无偏移
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OLED_WriteCommand(0xD5); // 设置显示时钟分频比/振荡器频率
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OLED_WriteCommand(0x80); // 推荐值
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OLED_WriteCommand(0xD9); // 设置预充电周期
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OLED_WriteCommand(0xF1); // 推荐值
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OLED_WriteCommand(0xDA); // 设置 COM 引脚配置
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OLED_WriteCommand(0x12);
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OLED_WriteCommand(0xDB); // 设置 VCOMH 电压倍率
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OLED_WriteCommand(0x40); // 推荐值
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OLED_WriteCommand(0x8D); // 使能电荷泵
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OLED_WriteCommand(0x14); // 开启
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OLED_WriteCommand(0xAF); // 开启显示
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||||
|
||||
OLED_Fill(0xFF); // 清屏
|
||||
}
|
||||
|
||||
void OLED_DrawPixel(uint8_t x, uint8_t y, uint8_t color) {
|
||||
if (x >= OLED_WIDTH || y >= OLED_HEIGHT) return;
|
||||
|
||||
if (color)
|
||||
OLED_GRAM[y / 8][x] |= (1 << (y % 8));
|
||||
else
|
||||
OLED_GRAM[y / 8][x] &= ~(1 << (y % 8));
|
||||
}
|
||||
|
||||
|
||||
|
||||
void OLED_Refresh(void) {
|
||||
for (uint8_t page = 0; page < 8; page++) {
|
||||
OLED_WriteCommand(0xB0 + page); // 设置页地址
|
||||
OLED_WriteCommand(0x00); // 设置低列地址
|
||||
OLED_WriteCommand(0x10); // 设置高列地址
|
||||
|
||||
for (uint8_t col = 0; col < OLED_WIDTH; col++) {
|
||||
OLED_WriteData(OLED_GRAM[page][col]);
|
||||
}
|
||||
}
|
||||
}
|
||||
void OLED_ShowChar(uint8_t x, uint8_t y, char chr) {
|
||||
if (x > OLED_WIDTH - 6 || y > 7) return;
|
||||
|
||||
uint8_t c = chr - 32; // ASCII偏移
|
||||
for (uint8_t i = 0; i < 6; i++) {
|
||||
OLED_GRAM[y][x + i] = Font6x8[c][i];
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
void lcd_show_all_ascii_lowercase() {
|
||||
uint16_t x = 0, y = 0;
|
||||
char ch = 'a';
|
||||
|
||||
for (int row = 0; row < 10; row++) {
|
||||
for (int col = 0; col < 16; col++) {
|
||||
OLED_ShowChar(x, y, ch); // 白色
|
||||
x += 8;
|
||||
ch++;
|
||||
if (ch > 'z') ch = 'a'; // 循环 a-z
|
||||
}
|
||||
x = 0;
|
||||
y += 16;
|
||||
}
|
||||
}
|
||||
|
||||
void test(){
|
||||
|
||||
|
||||
|
||||
|
||||
IIC_GPIO_Init();
|
||||
|
||||
OLED_Init();
|
||||
|
||||
lcd_show_all_ascii_lowercase();
|
||||
|
||||
OLED_Refresh();
|
||||
|
||||
while(1){
|
||||
|
||||
//OLED_Fill(0xFF); // 清屏
|
||||
//delay_ms_simple(1000);
|
||||
|
||||
//OLED_Fill(0x00);
|
||||
//delay_ms_simple(1000);
|
||||
|
||||
|
||||
|
||||
}
|
||||
|
||||
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
Reference in New Issue
Block a user