工行U盾屏幕驱动

2a2be · 发表于 7 小时前

爱科技、爱创意、爱折腾、爱极致，我们都是技术控

您需要登录才可以下载或查看，没有账号？立即注册

x

不知道有没有人点过，恰巧手里有一个这玩意，就点了一下。

地上捡了个工行u盾，开机显示金融@家，然后就什么也不动了，不知道好坏，决定拆屏幕玩玩

外壳这样

背面

屏幕共10pin，测得4脚为gnd，其他未知

一古脑飞线出所有的pin，接逻辑分析仪

开机捕获波形，然后得出结果如下(含之后stm8接线):

然后拆下来焊转接板上，接stm8，刷固件点亮，一次成功:

驱动程序如下

/*
* STM8S105K4T6 — ST7565-family SPI driver for FPC-G18019E-ZH-10pin
*
* Init sequence captured from original board boot (see ../notes/LA_BOOT.md).
* Default pins: CS=PC3 A0=PC4 SCLK=PC5 MOSI=PC6 RST=PC7
*/
#include <stdint.h>
#define _SFR(addr) (*(volatile uint8_t *)(addr))
#define CLK_CKDIVR _SFR(0x50C6)
#define PC_ODR _SFR(0x500A)
#define PC_DDR _SFR(0x500C)
#define PC_CR1 _SFR(0x500D)
#define LCD_W 128u
#define LCD_H 64u
#define LCD_PAGES (LCD_H / 8u)
/* PC3..PC7 */
#define PIN_CS (1u << 3)
#define PIN_A0 (1u << 4)
#define PIN_SCLK (1u << 5)
#define PIN_MOSI (1u << 6)
#define PIN_RST (1u << 7)
#define PIN_ALL (PIN_CS | PIN_A0 | PIN_SCLK | PIN_MOSI | PIN_RST)
static void delay_ms(uint16_t ms)
{
/* Rough busy-wait after CKDIVR=0 (fCPU ≈ 16 MHz HSI). */
while (ms--) {
uint16_t n = 1600u;
while (n--) {
__asm__("nop");
}
}
}
static void gpio_init(void)
{
CLK_CKDIVR = 0x00u; /* fCPU = fHSI = 16 MHz */
PC_DDR |= PIN_ALL;
PC_CR1 |= PIN_ALL;
PC_ODR |= PIN_CS | PIN_A0 | PIN_SCLK | PIN_RST;
PC_ODR &= (uint8_t)~PIN_MOSI;
}
static void spi_write_byte(uint8_t v)
{
uint8_t i;
for (i = 0u; i < 8u; i++) {
if (v & 0x80u)
PC_ODR |= PIN_MOSI;
else
PC_ODR &= (uint8_t)~PIN_MOSI;
PC_ODR |= PIN_SCLK;
__asm__("nop");
__asm__("nop");
PC_ODR &= (uint8_t)~PIN_SCLK;
v <<= 1;
}
}
static void lcd_cmd(uint8_t c)
{
PC_ODR &= (uint8_t)~PIN_CS;
PC_ODR &= (uint8_t)~PIN_A0;
spi_write_byte(c);
PC_ODR |= PIN_CS;
}
static void lcd_data(uint8_t d)
{
PC_ODR &= (uint8_t)~PIN_CS;
PC_ODR |= PIN_A0;
spi_write_byte(d);
PC_ODR |= PIN_CS;
}
static void lcd_data_buf(const uint8_t *p, uint8_t n)
{
PC_ODR &= (uint8_t)~PIN_CS;
PC_ODR |= PIN_A0;
while (n--)
spi_write_byte(*p++);
PC_ODR |= PIN_CS;
}
static void lcd_set_pos(uint8_t page, uint8_t col)
{
lcd_cmd((uint8_t)(0xB0u | (page & 0x0Fu)));
lcd_cmd((uint8_t)(0x10u | ((col >> 4) & 0x0Fu)));
lcd_cmd((uint8_t)(0x00u | (col & 0x0Fu)));
}
/* Exact command sequence from original boot capture */
static void lcd_init(void)
{
PC_ODR |= PIN_RST;
delay_ms(10u);
PC_ODR &= (uint8_t)~PIN_RST;
delay_ms(5u);
PC_ODR |= PIN_RST;
delay_ms(10u);
lcd_cmd(0xE2u); /* SW reset */
delay_ms(10u);
lcd_cmd(0xA2u); /* bias 1/9 */
lcd_cmd(0xA0u); /* ADC normal */
lcd_cmd(0xC8u); /* COM reverse */
lcd_cmd(0xA4u); /* display from RAM */
lcd_cmd(0xA6u); /* normal (not reverse video) */
lcd_cmd(0x24u); /* regulator resistor ratio */
lcd_cmd(0x81u); /* electronic volume */
lcd_cmd(0x25u);
lcd_cmd(0xF8u); /* booster ratio */
lcd_cmd(0x00u);
lcd_cmd(0x2Cu);
delay_ms(5u);
lcd_cmd(0x2Eu);
delay_ms(5u);
lcd_cmd(0x2Fu); /* power all on */
delay_ms(10u);
lcd_cmd(0x40u); /* start line 0 */
lcd_cmd(0xAFu); /* display ON */
}
static void lcd_fill(uint8_t v)
{
uint8_t page;
uint8_t col;
uint8_t line[LCD_W];
for (col = 0u; col < LCD_W; col++)
line[col] = v;
for (page = 0u; page < LCD_PAGES; page++) {
lcd_set_pos(page, 0u);
lcd_data_buf(line, LCD_W);
}
}
static void lcd_checkerboard(void)
{
uint8_t page;
uint8_t col;
uint8_t line[LCD_W];
for (page = 0u; page < LCD_PAGES; page++) {
for (col = 0u; col < LCD_W; col++) {
uint8_t on = ((col >> 3) ^ page) & 1u;
line[col] = on ? 0xFFu : 0x00u;
}
lcd_set_pos(page, 0u);
lcd_data_buf(line, LCD_W);
}
}
/* 5x7 glyphs in 8-tall pages; columns packed MSB=top unused bit0..6 used */
static const uint8_t FONT5[][5] = {
{ 0x3E, 0x51, 0x49, 0x45, 0x3E }, /* 0 */
{ 0x00, 0x42, 0x7F, 0x40, 0x00 }, /* 1 */
{ 0x42, 0x61, 0x51, 0x49, 0x46 }, /* 2 */
{ 0x21, 0x41, 0x45, 0x4B, 0x31 }, /* 3 */
{ 0x18, 0x14, 0x12, 0x7F, 0x10 }, /* 4 */
{ 0x27, 0x45, 0x45, 0x45, 0x39 }, /* 5 */
{ 0x3C, 0x4A, 0x49, 0x49, 0x30 }, /* 6 */
{ 0x01, 0x71, 0x09, 0x05, 0x03 }, /* 7 */
{ 0x36, 0x49, 0x49, 0x49, 0x36 }, /* 8 */
{ 0x06, 0x49, 0x49, 0x29, 0x1E }, /* 9 */
{ 0x7E, 0x11, 0x11, 0x11, 0x7E }, /* A */
{ 0x7F, 0x49, 0x49, 0x49, 0x36 }, /* B */
{ 0x3E, 0x41, 0x41, 0x41, 0x22 }, /* C */
{ 0x7F, 0x41, 0x41, 0x22, 0x1C }, /* D */
{ 0x7F, 0x49, 0x49, 0x49, 0x41 }, /* E */
{ 0x7F, 0x09, 0x09, 0x09, 0x01 }, /* F */
{ 0x3E, 0x41, 0x49, 0x49, 0x7A }, /* G */
{ 0x7F, 0x08, 0x08, 0x08, 0x7F }, /* H */
{ 0x00, 0x41, 0x7F, 0x41, 0x00 }, /* I */
{ 0x20, 0x40, 0x41, 0x3F, 0x01 }, /* J */
{ 0x7F, 0x08, 0x14, 0x22, 0x41 }, /* K */
{ 0x7F, 0x40, 0x40, 0x40, 0x40 }, /* L */
{ 0x7F, 0x02, 0x0C, 0x02, 0x7F }, /* M */
{ 0x7F, 0x04, 0x08, 0x10, 0x7F }, /* N */
{ 0x3E, 0x41, 0x41, 0x41, 0x3E }, /* O */
{ 0x7F, 0x09, 0x09, 0x09, 0x06 }, /* P */
{ 0x3E, 0x41, 0x51, 0x21, 0x5E }, /* Q */
{ 0x7F, 0x09, 0x19, 0x29, 0x46 }, /* R */
{ 0x46, 0x49, 0x49, 0x49, 0x31 }, /* S */
{ 0x01, 0x01, 0x7F, 0x01, 0x01 }, /* T */
{ 0x3F, 0x40, 0x40, 0x40, 0x3F }, /* U */
{ 0x1F, 0x20, 0x40, 0x20, 0x1F }, /* V */
{ 0x3F, 0x40, 0x38, 0x40, 0x3F }, /* W */
{ 0x63, 0x14, 0x08, 0x14, 0x63 }, /* X */
{ 0x07, 0x08, 0x70, 0x08, 0x07 }, /* Y */
{ 0x61, 0x51, 0x49, 0x45, 0x43 }, /* Z */
{ 0x00, 0x00, 0x00, 0x00, 0x00 }, /* space */
};
static uint8_t glyph_index(char c)
{
if (c >= '0' && c <= '9')
return (uint8_t)(c - '0');
if (c >= 'A' && c <= 'Z')
return (uint8_t)(10u + (c - 'A'));
if (c >= 'a' && c <= 'z')
return (uint8_t)(10u + (c - 'a'));
return 36u; /* space */
}
static void lcd_draw_char(uint8_t page, uint8_t col, char c)
{
uint8_t idx = glyph_index(c);
lcd_set_pos(page, col);
lcd_data_buf(FONT5[idx], 5u);
lcd_data(0x00u);
}
static void lcd_draw_str(uint8_t page, uint8_t col, const char *s)
{
while (*s) {
lcd_draw_char(page, col, *s++);
col = (uint8_t)(col + 6u);
if (col > LCD_W - 6u)
break;
}
}
static void lcd_hline_page(uint8_t page, uint8_t col0, uint8_t col1, uint8_t mask)
{
uint8_t col;
lcd_set_pos(page, col0);
for (col = col0; col <= col1; col++)
lcd_data(mask);
}
void main(void)
{
gpio_init();
lcd_init();
lcd_fill(0x00u);
delay_ms(200u);
lcd_draw_str(0u, 8u, "G18019E");
lcd_draw_str(2u, 8u, "ST7565");
lcd_draw_str(4u, 8u, "128x64");
lcd_hline_page(6u, 0u, 127u, 0x18u);
delay_ms(4000u);
lcd_checkerboard();
for (;;) {
delay_ms(2500u);
lcd_fill(0xFFu);
delay_ms(500u);
lcd_fill(0x00u);
delay_ms(500u);
lcd_draw_str(1u, 16u, "OK");
lcd_draw_str(3u, 4u, "STM8S105");
delay_ms(2500u);
lcd_checkerboard();
}
}