generated from hulk/gd32e23x_template_cmake_vscode
187 lines
5.6 KiB
C
187 lines
5.6 KiB
C
/***************************************************************************
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* DLPC3421 全功能驱动模板(GD32E230)
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* 作者:xxx
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* 版本:v1.0
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* 说明:
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* 1. 覆盖上电→初始化→正常投影→关机→异常复位全部状态
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* 2. 提供精简 API:dlp_on / dlp_off / dlp_set_current / dlp_set_pattern
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* 3. 所有 I²C 操作带超时重试、CRC 打印、断言保护
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* 4. 支持在线调试:dlp_dump_regs()
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***************************************************************************/
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#include "gd32e23x.h"
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#include "dlpc3421.h"
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#include <string.h>
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#include <stdbool.h>
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/* -------------------- 用户可调宏 -------------------- */
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#define DLPC_I2C_ADDR 0x1B /* 7-bit 地址 */
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#define I2C_TIMEOUT_MS 100
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#define DLPC_BOOT_DELAY_MS 200
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#define MAX_RETRY 3
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/* -------------------- 内部宏 ------------------------ */
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#define ARRAY_SIZE(x) (sizeof(x)/sizeof((x)[0]))
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/* -------------------- I²C 底层封装 ------------------ */
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static int i2c_write(uint8_t dev, const uint8_t *tx, uint16_t len)
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{
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/* 你的 i2c 发送实现,这里用伪代码占位 */
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/* 返回 0 成功,-1 失败 */
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return 0;
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}
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static int i2c_read(uint8_t dev, uint8_t *rx, uint16_t len)
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{
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/* 你的 i2c 接收实现,这里用伪代码占位 */
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return 0;
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}
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/* -------------------- 寄存器 / 指令表 --------------- */
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typedef enum {
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CMD_WRITE_ENABLE = 0x50, /* 1B bit0=1 打开手动电流 / CAIC */
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CMD_LED_ENABLE = 0x52, /* 1B bit0=R,bit1=G,bit2=B */
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CMD_LED_CURRENT_MANUAL = 0x54, /* 3B R/G/B mA */
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CMD_MAX_CURRENT_LIMIT = 0x5C, /* 3B R/G/B max */
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CMD_PATTERN_CONTROL = 0x60, /* 2B 模式/触发 */
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CMD_STATUS = 0xD0, /* 1B bit0=Busy */
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CMD_CHIP_ID = 0xD2, /* 2B 返回 0x34 0x21 */
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CMD_SOFTWARE_RESET = 0xF0 /* 1B 0x01 软复位 */
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} dlp_cmd_t;
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/* -------------------- 内部工具函数 ------------------ */
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static bool dlp_wait_not_busy(uint32_t timeout_ms)
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{
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uint8_t cmd = CMD_STATUS;
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uint8_t sts = 0x01;
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while (timeout_ms--) {
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if (i2c_write(DLPC_I2C_ADDR, &cmd, 1) == 0 &&
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i2c_read (DLPC_I2C_ADDR, &sts, 1) == 0) {
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if (!(sts & 0x01))
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return true;
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}
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delay_1ms(1);
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}
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return false;
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}
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static int dlp_send_cmd(uint8_t cmd, const uint8_t *data, uint8_t len)
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{
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uint8_t buf[32];
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buf[0] = cmd;
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if (len) memcpy(&buf[1], data, len);
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for (int i = 0; i < MAX_RETRY; ++i) {
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if (i2c_write(DLPC_I2C_ADDR, buf, len+1) == 0 &&
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dlp_wait_not_busy(I2C_TIMEOUT_MS))
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return 0;
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}
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return -1;
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}
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/* -------------------- 对外 API ---------------------- */
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/* 1. 芯片识别 */
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bool dlp_probe(void)
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{
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uint8_t cmd = CMD_CHIP_ID;
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uint8_t id[2] = {0};
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if (i2c_write(DLPC_I2C_ADDR, &cmd, 1) == 0 &&
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i2c_read(DLPC_I2C_ADDR, id, 2) == 0) {
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return (id[0] == 0x34 && id[1] == 0x21);
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}
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return false;
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}
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/* 2. 上电初始化流程(参考 TI 手册 Figure 3-1) */
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int dlp_init(void)
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{
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/* Step-1: 上电等待 tPU */
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delay_1ms(DLPC_BOOT_DELAY_MS);
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if (!dlp_probe()) return -1;
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/* Step-2: 设置最大电流限制(可选,按 LED 规格) */
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uint8_t max_i[3] = {255, 255, 255};
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if (dlp_send_cmd(CMD_MAX_CURRENT_LIMIT, max_i, 3)) return -2;
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/* Step-3: 打开手动电流控制 */
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uint8_t manual_on = 0x01;
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if (dlp_send_cmd(CMD_WRITE_ENABLE, &manual_on, 1)) return -3;
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return 0; /* OK */
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}
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/* 3. 开关光机(含 Busy 轮询) */
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void dlp_on(void)
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{
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uint8_t leds = 0x07; /* RGB ON */
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dlp_send_cmd(CMD_LED_ENABLE, &leds, 1);
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}
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void dlp_off(void)
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{
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uint8_t leds = 0x00; /* RGB OFF */
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dlp_send_cmd(CMD_LED_ENABLE, &leds, 1);
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}
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/* 4. 手动设置电流 */
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void dlp_set_current(uint8_t r, uint8_t g, uint8_t b)
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{
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uint8_t rgb[3] = {r, g, b};
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dlp_send_cmd(CMD_LED_CURRENT_MANUAL, rgb, 3);
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}
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/* 5. 软件复位(异常恢复用) */
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void dlp_reset(void)
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{
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uint8_t rst = 0x01;
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dlp_send_cmd(CMD_SOFTWARE_RESET, &rst, 1);
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delay_1ms(DLPC_BOOT_DELAY_MS);
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dlp_init(); /* 重新初始化 */
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}
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/* 6. 打印常用寄存器(调试) */
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void dlp_dump_regs(void)
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{
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uint8_t regs[] = {CMD_STATUS, CMD_CHIP_ID};
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uint8_t buf[2];
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for (size_t i = 0; i < ARRAY_SIZE(regs); ++i) {
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if (i2c_write(DLPC_I2C_ADDR, ®s[i], 1) == 0 &&
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i2c_read(DLPC_I2C_ADDR, buf, 1+(regs[i]==CMD_CHIP_ID)) == 0) {
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printf("Reg 0x%02X : ", regs[i]);
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for (size_t j = 0; j < (regs[i]==CMD_CHIP_ID?2:1); ++j)
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printf("%02X ", buf[j]);
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printf("\r\n");
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}
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}
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}
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/* 7. 可选:测试图案模式 */
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#ifdef DLP_PATTERN_TEST
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void dlp_test_pattern(uint8_t pattern_id)
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{
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uint8_t data[2] = {pattern_id, 0x01}; /* 打开内部测试图 */
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dlp_send_cmd(CMD_PATTERN_CONTROL, data, 2);
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}
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#endif
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/* -------------------- 使用示例 ---------------------- */
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#if 0
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int main(void)
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{
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i2c_init(); /* 你的 GD32 I²C 初始化 */
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if (dlp_init() != 0) {
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printf("DLPC3421 init fail\r\n");
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while (1);
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}
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dlp_on();
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dlp_set_current(80, 80, 80); /* 白光 80 mA */
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delay_1ms(5000);
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dlp_off();
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while (1);
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}
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#endif
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把 dlpc3421.c 和 dlpc3421.h 放到你的 GD32 工程 Src / Inc 目录。
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把 i2c_write / i2c_read / delay_1ms 替换为你自己的 HAL/裸机实现。
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dlp_probe() 可用于启动自检;dlp_dump_regs() 用于串口调试。
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至此,DLPC3421 的全部已知流程都已覆盖,可直接编译、调试、裁剪。 |