安信可Ai-M61-32SU PWM 点 RGB

[i=s] 本帖最后由 lovzx 于 2024-5-4 20:02 编辑 [/i]<br /> <br /> > 本帖最后由 lovzx 于 2024-5-4 20:02 编辑 > 本帖最后由 lovzx 于 2024-5-4 20:01 编辑 ### M61-32SU-Kit RGB DEMO ### 准备工作 - 开发环境 这一步可以参考论坛是各位大佬的教程，写的很详细 - 开发板 因为之前搭建过小安派的开发环境，M61-32开发板和小安派一样都是用的BL616/BL618芯片，这俩芯片开发环境是可以通用的，所以我这边就没有配置什么就可以直接上手写代码了 ### 项目思路 考虑到开发板上有RGB的灯和板载的用户按键，首先就想到了用按键控制RGB的开启和关闭，其次考虑到RGB是内置了三颗红绿蓝的led灯珠，于是就有了通过shell命令来单独控制每一颗灯珠的亮度，控制LED灯亮度首选PWM方式，以上就是全部的功能了 - 板载按键控制RGB开启和关闭 - 通过shell命令单独控制RGB三颗小灯珠的亮度 最终实现的shell命令有下面3个： 1. rgb\_on 开启RGB灯 2. rgb\_off 关闭RGB灯 3. rgb 控制rgb灯珠亮度，参数可以是0xFF00FF十六进制，也可以是255.200.22十进制格式，数据从高位到低位分别对应的是R，G，B三颗灯珠的参数 ### 运行效果 <iframe src="https://player.bilibili.com/player.html?aid=1454225146&bvid=BV1Bi421k7X6&cid=1530903051&p=1" scrolling="no" border="0" frameborder="no" framespacing="0" allowfullscreen="true"> </iframe> ### 代码 ##### 按键key代码 - 初始化按键 ```c //板载key init gpio = bflb_device_get_by_name("gpio"); bflb_gpio_init(gpio, PIN_KEY, GPIO_INPUT | GPIO_PULLDOWN); bflb_gpio_set(gpio, PIN_KEY); ``` - 注册button ```c button_t key2; //读取gpio函数 key2.usr_button_read = user_button_read; //事件回调函数 key2.cb = key_response_callback; key2.click_hold_start_tick = FLEX_MS_TO_SCAN_CNT(100); button_register(&key2); ``` 然后就是在while中循环获取到GPIO的状态通过状态机更新用户事件，然后在回调里面触发RGB动作 ```c //扫描GPIO状态 while (1) { button_scan(); bflb_mtimer_delay_ms(10); } ``` - 读取按键GPIO数据 ```c uint8_t user_button_read(void) { return bflb_gpio_read(gpio, PIN_KEY); } ``` - 更新RGB状态 - ```c void key_response_callback(void* argv) { if (button_event_read(btn) == BTN_EVENT_PRESS_CLICK) { printf("event: down\n"); rgb_toggle(); } } ``` ##### rgb设备初始化 ```c void rgb_init() { gpio = bflb_device_get_by_name("gpio"); pwm = bflb_device_get_by_name("pwm_v2_0"); //初始化GPIO为PWM功能 bflb_gpio_init(gpio, RGB_R, GPIO_FUNC_PWM0 | GPIO_ALTERNATE | GPIO_PULLUP | GPIO_SMT_EN | GPIO_DRV_1); bflb_gpio_init(gpio, RGB_G, GPIO_FUNC_PWM0 | GPIO_ALTERNATE | GPIO_PULLUP | GPIO_SMT_EN | GPIO_DRV_1); bflb_gpio_init(gpio, RGB_B, GPIO_FUNC_PWM0 | GPIO_ALTERNATE | GPIO_PULLUP | GPIO_SMT_EN | GPIO_DRV_1); //pwm配置 struct bflb_pwm_v2_config_s cfg = { .clk_source = BFLB_SYSTEM_PBCLK, .clk_div = 80, .period = 2550, }; bflb_pwm_v2_init(pwm, &cfg); bflb_pwm_v2_channel_set_threshold(pwm, PWM_R, 0, 2550); bflb_pwm_v2_channel_set_threshold(pwm, PWM_G, 0, 2550); bflb_pwm_v2_channel_set_threshold(pwm, PWM_B, 0, 2500); bflb_pwm_v2_start(pwm); } ``` - rgb\_on 开启RGB代码 ```c void rgb_light_on() { if (light_status != 1) { light_status = 1; bflb_pwm_v2_channel_negative_start(pwm, PWM_R); bflb_pwm_v2_channel_positive_start(pwm, PWM_R); bflb_pwm_v2_channel_positive_start(pwm, PWM_G); bflb_pwm_v2_channel_negative_start(pwm, PWM_G); bflb_pwm_v2_channel_positive_start(pwm, PWM_B); bflb_pwm_v2_channel_negative_start(pwm, PWM_B); bflb_pwm_v2_start(pwm); } } ``` - rgb\_off 关闭RGB代码 ```c void rgb_light_off() { if (light_status != 0) { light_status = 0; //R bflb_pwm_v2_channel_negative_stop(pwm, PWM_R); bflb_pwm_v2_channel_positive_stop(pwm, PWM_R); //G bflb_pwm_v2_channel_positive_stop(pwm, PWM_G); bflb_pwm_v2_channel_negative_stop(pwm, PWM_G); //B bflb_pwm_v2_channel_positive_stop(pwm, PWM_B); bflb_pwm_v2_channel_negative_stop(pwm, PWM_B); bflb_pwm_v2_stop(pwm); } } ``` - PWM分别控制R/G/B灯珠 ``` int rgb_update(int r, int g, int b) { printf("r: %d, g: %d, b: %d\n", r, g, b); bflb_pwm_v2_channel_set_threshold(pwm, PWM_R, 0, r * 10); bflb_pwm_v2_channel_set_threshold(pwm, PWM_G, 0, g * 10); bflb_pwm_v2_channel_set_threshold(pwm, PWM_B, 0, b * 10); if (light_status == 0) { rgb_light_on(); } } ``` - 注册shell命令 ``` /** * @brief 开灯 * @param argc * @param argv * @return int */ int rgb_shell_on(int argc, const char** argv) { rgb_light_on(); return 0; } /** * @brief 关灯 * @param argc * @param argv * @return int */ int rgb_shell_off(int argc, const char** argv) { rgb_light_off(); return 0; } /** * rgb 0xff0000 red * rgb 0x00ff00 green * rgb 0x0000ff blue * * * 十进制模式.0结尾可以省略 * rgb 255 red * rgb 0.255 green * rgb 0.0.255 blue * * @brief * @param argc * @param argv * @return int */ int rgb_shell(int argc, const char** argv) { if (argc != 2 || argv[1] == '\0' || strlen(argv[1]) <= 0) { printf("Usage:[%s] 0xFF00|255.0.0\n", argv[0]); return 0; } char* color_str = argv[1]; //转换大小写 color_str = strupr(color_str); if (strncmp(color_str, "0X", 2) == 0) { int int_color = strtol(color_str, NULL, 16); //16-24bit int r = int_color >> 16 & 0xff; //9-16bit int g = int_color >> 8 & 0xff; //1-8bit int b = int_color & 0xff; rgb_update(r, g, b); return 0; } int array[3] = { -1,0,0 }; char* token = strtok(color_str, "."); int index = 1; if (strisdigit(color_str)) { array[0] = atoi(color_str); } while (token != NULL) { token = strtok(NULL, "."); if (strisdigit(token)) { array[index] = atoi(token); } else { break; } index++; } for (int i = 0; i < 3;i++) { if (array[i] < 0 || array[i] > 255) { printf("Usage:[%s] 0xFF00|255.0.0\n", argv[0]); return 0; } } rgb_update(array[0], array[1], array[2]); return 0; } //注册rgb_on shell命令 SHELL_CMD_EXPORT_ALIAS(rgb_shell_on, rgb_on, rgb on); //注册rgb_off shell 命令 SHELL_CMD_EXPORT_ALIAS(rgb_shell_off, rgb_off, rgb off); //注册rgb 调节 shell 命令 SHELL_CMD_EXPORT_ALIAS(rgb_shell, rgb, rgb_shell); ``` [点击下载代码]([https://gitee.com/jrobot](https://gitee.com/jrobot)\_Q\_Q/m61\_-rgb\_-demo)

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