296 lines
8.6 KiB
C
296 lines
8.6 KiB
C
/* oled.c - 128x64 OLED + 晶联讯 GB2312 字库 IC 驱动（GPIO 模拟 SPI）
|
||
* 移植自《485模拟磅秤数据带CRC》工程 oledisp.c，引脚改为本板：
|
||
* CLK=PC12 MOSI=PC9 DC=PC8 CS1=PC7 FSO=PC6 CS2=PB15 */
|
||
|
||
#include "oled.h"
|
||
#include <string.h>
|
||
|
||
#define OLED_CLK_PORT GPIOC
|
||
#define OLED_CLK_PIN GPIO_PIN_12
|
||
#define OLED_MOSI_PORT GPIOC
|
||
#define OLED_MOSI_PIN GPIO_PIN_9
|
||
#define OLED_DC_PORT GPIOC
|
||
#define OLED_DC_PIN GPIO_PIN_8
|
||
#define OLED_CS1_PORT GPIOC
|
||
#define OLED_CS1_PIN GPIO_PIN_7
|
||
#define OLED_FSO_PORT GPIOC
|
||
#define OLED_FSO_PIN GPIO_PIN_6
|
||
#define OLED_CS2_PORT GPIOB
|
||
#define OLED_CS2_PIN GPIO_PIN_15
|
||
|
||
#define lcd_cs1(a) HAL_GPIO_WritePin(OLED_CS1_PORT, OLED_CS1_PIN, (GPIO_PinState)(a))
|
||
#define lcd_dc(a) HAL_GPIO_WritePin(OLED_DC_PORT, OLED_DC_PIN, (GPIO_PinState)(a))
|
||
#define lcd_mosi(a) HAL_GPIO_WritePin(OLED_MOSI_PORT, OLED_MOSI_PIN, (GPIO_PinState)(a))
|
||
#define lcd_clk(a) HAL_GPIO_WritePin(OLED_CLK_PORT, OLED_CLK_PIN, (GPIO_PinState)(a))
|
||
#define rom_cs2(a) HAL_GPIO_WritePin(OLED_CS2_PORT, OLED_CS2_PIN, (GPIO_PinState)(a))
|
||
#define ROM_OUT HAL_GPIO_ReadPin(OLED_FSO_PORT, OLED_FSO_PIN)
|
||
|
||
static uint8_t s_row = 0; /* 当前页地址（16px 行 × 2） */
|
||
static uint8_t s_col = 0; /* 当前列（像素） */
|
||
|
||
/*==== FSO 脚输入/输出切换（读字库时为输入）====*/
|
||
static void fso_input(void)
|
||
{
|
||
GPIO_InitTypeDef g = {0};
|
||
g.Pin = OLED_FSO_PIN;
|
||
g.Mode = GPIO_MODE_INPUT;
|
||
g.Pull = GPIO_NOPULL;
|
||
HAL_GPIO_Init(OLED_FSO_PORT, &g);
|
||
}
|
||
|
||
static void fso_output(void)
|
||
{
|
||
GPIO_InitTypeDef g = {0};
|
||
g.Pin = OLED_FSO_PIN;
|
||
g.Mode = GPIO_MODE_OUTPUT_PP;
|
||
g.Pull = GPIO_PULLUP;
|
||
g.Speed = GPIO_SPEED_FREQ_LOW;
|
||
HAL_GPIO_Init(OLED_FSO_PORT, &g);
|
||
}
|
||
|
||
/*==== GPIO 初始化 ====*/
|
||
static void oled_gpio_init(void)
|
||
{
|
||
GPIO_InitTypeDef g = {0};
|
||
|
||
__HAL_RCC_GPIOB_CLK_ENABLE();
|
||
__HAL_RCC_GPIOC_CLK_ENABLE();
|
||
|
||
/* 先置好空闲电平再开推挽，避免毛刺 */
|
||
HAL_GPIO_WritePin(OLED_CLK_PORT, OLED_CLK_PIN, GPIO_PIN_SET);
|
||
HAL_GPIO_WritePin(OLED_MOSI_PORT, OLED_MOSI_PIN, GPIO_PIN_SET);
|
||
HAL_GPIO_WritePin(OLED_DC_PORT, OLED_DC_PIN, GPIO_PIN_SET);
|
||
HAL_GPIO_WritePin(OLED_CS1_PORT, OLED_CS1_PIN, GPIO_PIN_SET);
|
||
HAL_GPIO_WritePin(OLED_CS2_PORT, OLED_CS2_PIN, GPIO_PIN_SET);
|
||
|
||
g.Mode = GPIO_MODE_OUTPUT_PP;
|
||
g.Pull = GPIO_PULLUP;
|
||
g.Speed = GPIO_SPEED_FREQ_LOW;
|
||
|
||
g.Pin = OLED_CLK_PIN; HAL_GPIO_Init(OLED_CLK_PORT, &g);
|
||
g.Pin = OLED_MOSI_PIN; HAL_GPIO_Init(OLED_MOSI_PORT, &g);
|
||
g.Pin = OLED_DC_PIN; HAL_GPIO_Init(OLED_DC_PORT, &g);
|
||
g.Pin = OLED_CS1_PIN; HAL_GPIO_Init(OLED_CS1_PORT, &g);
|
||
g.Pin = OLED_CS2_PIN; HAL_GPIO_Init(OLED_CS2_PORT, &g);
|
||
|
||
fso_output();
|
||
}
|
||
|
||
/*==== 写字节到屏幕（DC=0 指令 / DC=1 数据）====*/
|
||
static void oled_write(uint8_t dc, uint8_t dat)
|
||
{
|
||
lcd_dc(dc);
|
||
lcd_cs1(0);
|
||
for (int i = 0; i < 8; i++) {
|
||
lcd_clk(0);
|
||
lcd_mosi(dat & 0x80);
|
||
lcd_clk(1);
|
||
dat <<= 1;
|
||
}
|
||
lcd_dc(1);
|
||
lcd_cs1(1);
|
||
}
|
||
|
||
/*==== 设置页/列地址 ====*/
|
||
static void lcd_address(uint8_t page, uint8_t column)
|
||
{
|
||
oled_write(0, 0xb0 + column); /* 页地址 */
|
||
oled_write(0, ((page & 0xf0) >> 4) | 0x10); /* 列地址高 4 位 */
|
||
oled_write(0, (page & 0x0f)); /* 列地址低 4 位 */
|
||
}
|
||
|
||
/*==== 全屏清屏 ====*/
|
||
void oled_clear(void)
|
||
{
|
||
lcd_cs1(0);
|
||
rom_cs2(1);
|
||
for (uint8_t i = 0; i < 8; i++) {
|
||
oled_write(0, 0xb0 + i);
|
||
oled_write(0, 0x00);
|
||
oled_write(0, 0x10);
|
||
for (uint8_t j = 0; j < 128; j++) oled_write(1, 0x00);
|
||
}
|
||
lcd_cs1(1);
|
||
}
|
||
|
||
/*==== 屏幕初始化（SSD1306 兼容序列）====*/
|
||
void oled_init(void)
|
||
{
|
||
HAL_Delay(400); /* 等屏幕/字库上电稳定 */
|
||
oled_gpio_init();
|
||
lcd_cs1(0);
|
||
rom_cs2(1);
|
||
oled_write(0, 0xAE); /* display off */
|
||
oled_write(0, 0x20); /* 寻址模式 */
|
||
oled_write(0, 0x10); /* 水平寻址 */
|
||
oled_write(0, 0xb0);
|
||
oled_write(0, 0xc8); /* COM 扫描方向 */
|
||
oled_write(0, 0x00);
|
||
oled_write(0, 0x10);
|
||
oled_write(0, 0x40); /* 起始行 */
|
||
oled_write(0, 0x81); /* 对比度 */
|
||
oled_write(0, 0xFF);
|
||
oled_write(0, 0xa1); /* 段重映射 */
|
||
oled_write(0, 0xa6); /* 正常显示 */
|
||
oled_write(0, 0xa8); /* 复用率 */
|
||
oled_write(0, 0x3F);
|
||
oled_write(0, 0xa4);
|
||
oled_write(0, 0xd3); /* 显示偏移 */
|
||
oled_write(0, 0x00);
|
||
oled_write(0, 0xd5); /* 时钟分频 */
|
||
oled_write(0, 0xf0);
|
||
oled_write(0, 0xd9); /* 预充电 */
|
||
oled_write(0, 0x22);
|
||
oled_write(0, 0xda); /* COM 硬件配置 */
|
||
oled_write(0, 0x12);
|
||
oled_write(0, 0xdb); /* VCOMH */
|
||
oled_write(0, 0x20);
|
||
oled_write(0, 0x8d); /* DC-DC */
|
||
oled_write(0, 0x14);
|
||
oled_write(0, 0xaf); /* display on */
|
||
lcd_cs1(1);
|
||
oled_clear();
|
||
}
|
||
|
||
/*==== 显示 16x16 点阵（汉字）====*/
|
||
static void display_graphic_16x16(uint8_t page, uint8_t column, const uint8_t *dp)
|
||
{
|
||
lcd_cs1(0);
|
||
rom_cs2(1);
|
||
for (uint8_t j = 2; j > 0; j--) {
|
||
lcd_address(column, page);
|
||
for (uint8_t i = 0; i < 16; i++) oled_write(1, *dp++);
|
||
page++;
|
||
}
|
||
lcd_cs1(1);
|
||
}
|
||
|
||
/*==== 显示 8x16 点阵（ASCII）====*/
|
||
static void display_graphic_8x16(uint8_t page, uint8_t column, const uint8_t *dp)
|
||
{
|
||
lcd_cs1(0);
|
||
for (uint8_t j = 2; j > 0; j--) {
|
||
lcd_address(column, page);
|
||
for (uint8_t i = 0; i < 8; i++) oled_write(1, *dp++);
|
||
page++;
|
||
}
|
||
lcd_cs1(1);
|
||
}
|
||
|
||
/*==== 字库 IC 写字节（指令/地址）====*/
|
||
static void rom_write_byte(uint8_t dat)
|
||
{
|
||
for (int i = 0; i < 8; i++) {
|
||
lcd_mosi(dat & 0x80);
|
||
dat <<= 1;
|
||
lcd_clk(0);
|
||
lcd_clk(1);
|
||
}
|
||
}
|
||
|
||
/*==== 字库 IC 读一字节 ====*/
|
||
static uint8_t rom_read_byte(void)
|
||
{
|
||
uint8_t ret = 0;
|
||
lcd_clk(1);
|
||
fso_input();
|
||
for (int i = 0; i < 8; i++) {
|
||
lcd_clk(0);
|
||
ret <<= 1;
|
||
if (ROM_OUT) ret |= 1;
|
||
lcd_clk(1);
|
||
}
|
||
fso_output();
|
||
return ret;
|
||
}
|
||
|
||
/*==== 从字库 IC 连续读 DataLen 字节 ====*/
|
||
static void rom_read_n(uint8_t ah, uint8_t am, uint8_t al, uint8_t *buf, uint8_t len)
|
||
{
|
||
rom_cs2(0);
|
||
lcd_cs1(1);
|
||
lcd_clk(0);
|
||
rom_write_byte(0x03); /* 读指令 */
|
||
rom_write_byte(ah);
|
||
rom_write_byte(am);
|
||
rom_write_byte(al);
|
||
for (uint8_t i = 0; i < len; i++) buf[i] = rom_read_byte();
|
||
rom_cs2(1);
|
||
}
|
||
|
||
/*==== 定位：row 0~3（16px 行），col8 为 8 像素单位 ====*/
|
||
void oled_locate(uint8_t row, uint8_t col8)
|
||
{
|
||
s_row = row * 2;
|
||
s_col = col8 * 8;
|
||
}
|
||
|
||
/*==== 显示 GBK 字符串（16x16 汉字 / 8x16 ASCII，编码换算见晶联讯字库手册）====*/
|
||
void oled_print(const char *s)
|
||
{
|
||
uint8_t fontbuf[32];
|
||
uint8_t y = s_row;
|
||
uint8_t x = s_col;
|
||
const uint8_t *text = (const uint8_t *)s;
|
||
uint32_t fontaddr;
|
||
|
||
s_col += strlen(s) * 8; /* 位置自加（按 8px/字符计） */
|
||
|
||
uint8_t i = 0;
|
||
while (text[i] > 0x00) {
|
||
if ((text[i] >= 0xb0 && text[i] <= 0xf7) && text[i+1] >= 0xa1) {
|
||
/* GB2312 汉字：Address = ((MSB-0xB0)*94 + (LSB-0xA1) + 846) * 32 */
|
||
fontaddr = (text[i] - 0xb0) * 94;
|
||
fontaddr += (text[i+1] - 0xa1) + 846;
|
||
fontaddr *= 32;
|
||
rom_read_n((uint8_t)(fontaddr >> 16), (uint8_t)(fontaddr >> 8),
|
||
(uint8_t)fontaddr, fontbuf, 32);
|
||
display_graphic_16x16(y, x, fontbuf);
|
||
i += 2;
|
||
x += 16;
|
||
}
|
||
else if ((text[i] >= 0xa1 && text[i] <= 0xa3) && text[i+1] >= 0xa1) {
|
||
/* GB2312 全角符号：Address = ((MSB-0xA1)*94 + (LSB-0xA1)) * 32 */
|
||
fontaddr = (text[i] - 0xa1) * 94;
|
||
fontaddr += (text[i+1] - 0xa1);
|
||
fontaddr *= 32;
|
||
rom_read_n((uint8_t)(fontaddr >> 16), (uint8_t)(fontaddr >> 8),
|
||
(uint8_t)fontaddr, fontbuf, 32);
|
||
display_graphic_16x16(y, x, fontbuf);
|
||
i += 2;
|
||
x += 16;
|
||
}
|
||
else if (text[i] >= 0x20 && text[i] <= 0x7e) {
|
||
/* ASCII 8x16：Address = (char-0x20)*16 + 0x3CF80 */
|
||
fontaddr = (text[i] - 0x20) * 16 + 0x3cf80;
|
||
rom_read_n((uint8_t)(fontaddr >> 16), (uint8_t)(fontaddr >> 8),
|
||
(uint8_t)fontaddr, fontbuf, 16);
|
||
display_graphic_8x16(y, x, fontbuf);
|
||
i += 1;
|
||
x += 8;
|
||
}
|
||
else {
|
||
i++;
|
||
}
|
||
}
|
||
}
|
||
|
||
/*==== 当前列右移 px 像素 ====*/
|
||
void oled_xoff(uint8_t px)
|
||
{
|
||
s_col += px;
|
||
}
|
||
|
||
/*==== 整行显示：计算像素宽度，不足 128px 用空格补齐（覆盖上次内容）====*/
|
||
void oled_print_line(const char *s)
|
||
{
|
||
const uint8_t *p = (const uint8_t *)s;
|
||
uint32_t w = 0;
|
||
while (*p) {
|
||
if (p[0] >= 0xa1 && p[1] >= 0xa1) { w += 16; p += 2; } /* 汉字/全角 */
|
||
else { w += 8; p += 1; } /* ASCII */
|
||
}
|
||
oled_print(s);
|
||
while (w < 128) { oled_print(" "); w += 8; }
|
||
}
|