如何驱动LED单元板？

703 LED单元板

问答对人有帮助，内容完整，我也想知道答案 0 如何驱动LED单元板？ 0
2022-2-28 08:32:05　　评论淘帖0 邀请回答您可以邀请以下用户，快速回答问题 × heks 该类别下有 20 个回答。邀请回答新星之火12138 该类别下有 18 个回答。邀请回答 wang21cj 该类别下有 17 个回答。邀请回答 hgimtk 该类别下有 16 个回答。邀请回答科源机电该类别下有 15 个回答。邀请回答 liutiefu 该类别下有 15 个回答。邀请回答 kghfh 该类别下有 14 个回答。邀请回答 chm5 该类别下有 13 个回答。邀请回答 dgfdf 该类别下有 13 个回答。邀请回答 723662364d 该类别下有 13 个回答。邀请回答一巷清苑该类别下有 13 个回答。邀请回答 efwedfd 该类别下有 12 个回答。邀请回答小华同学该类别下有 12 个回答。邀请回答 jsqueh 该类别下有 12 个回答。邀请回答红旧衫该类别下有 12 个回答。邀请回答早知该类别下有 12 个回答。邀请回答 Ehunt 该类别下有 12 个回答。邀请回答张峰9998 该类别下有 12 个回答。邀请回答 hy381 该类别下有 12 个回答。邀请回答 ggfvxv 该类别下有 12 个回答。邀请回答举报 tulin 相关推荐 • 诚心求助自制LED显示单元板，控制卡相关资料 3919 • 怎么设计基于LED的视频显示板？ 1337 • 光纤LED驱动电路的设计原理是什么？ 1943 • 关于用Arm开发板驱动LED条屏问题 2009 • 真心诚意，求助购买一套LED显示单元板，控制卡相关资料 3070 • 请问led驱动电路这样设计有什么好处。 2911 • 否有任何LED驱动器可以让LED使用PWM信号工作？ 254 • LED驱动电路输出无电流、功率，是什么原因？ 3329 • STM32F103如何驱动32x64双色点阵单元板？ 903 • 低压便携设备的LED驱动器怎么选择？ 2539 1个回答

答案对人有帮助，有参考价值 0 开始之前先吐槽一下，搜这个的资料。要么都是Arduino，要么单片机的收费。小小的一个LED单元板，凭什么？用Arduino是你速度快还是我ST，树莓派不好用？收费更离谱，这点东西还藏私？给你个中指凸。把原理都写出来看你怎么收费。一、接口定义及原理如图，有两个RGB通道，共占用6个IO。剩下的ABCDE为地址通道，LAT为行数据锁存通道，CLK为数据时钟，OE为低电平使能LED显示。图片这里没有E，证明它是16扫的，有E就会把B上面的地改为E。这样就是5位，2的5次方32扫。16扫控制16行显示，共2个RGB通道所以16扫可以控制162=32行显示。（1）单元板的显示为单位时间内显示一行数据，然后短时间内切换到另一行显示，16扫一个显示周期为切换16次。（2）两个RGB通道分别控制上下两部分的RGB灯。图片中的为3216。正常来说，需要3个地址ABC，假设ABC 3个IO为高电平意味着选定第7行跟第15行，RGB1通道数据被写到第7行，RGB2数据被写到第15行。(我这个板子比较坑，有点不同) （3）数据的写入顺序，失能LED显示，写入一行数据，选定行，锁存，使能LED显示。（4）颜色渐变，方法是同一行扫描32次，假设R1我只显示一次，那它占空比就是1/32，显示次数越多越来亮。这方法挺麻烦，但暂时没想到别的方法。 By the way：我这板子比较奇怪，数据写入方式跟一般的板子不一样。具体看图：数据填充的时候，RBG1通道前8个时钟周期数据在第0行，接下来8个时钟周期数据却跳到第4行去了。然后又跳回第一行。正常的应该是一直往同一行填充数据才对的。所以我买的这个板子比较奇葩。二、驱动代码使用单片机为STM32F407VE，STM32CUBEMX生成代码 #include "main.h" #include "tim.h" #include "gpio.h" void SystemClock_Config(void); #define OE_H HAL_GPIO_WritePin(OE_GPIO_Port,OE_Pin,GPIO_PIN_SET) #define R1_H HAL_GPIO_WritePin(R1_GPIO_Port,R1_Pin,GPIO_PIN_SET) #define R2_H HAL_GPIO_WritePin(R2_GPIO_Port,R2_Pin,GPIO_PIN_SET) #define G1_H HAL_GPIO_WritePin(G1_GPIO_Port,G1_Pin,GPIO_PIN_SET) #define G2_H HAL_GPIO_WritePin(G2_GPIO_Port,G2_Pin,GPIO_PIN_SET) #define B1_H HAL_GPIO_WritePin(B1_GPIO_Port,B1_Pin,GPIO_PIN_SET) #define B2_H HAL_GPIO_WritePin(B2_GPIO_Port,B2_Pin,GPIO_PIN_SET) #define A_H HAL_GPIO_WritePin(A_GPIO_Port,A_Pin,GPIO_PIN_SET) #define B_H HAL_GPIO_WritePin(B_GPIO_Port,B_Pin,GPIO_PIN_SET) #define CLK_H HAL_GPIO_WritePin(CLK_GPIO_Port,CLK_Pin,GPIO_PIN_SET) #define LAT_H HAL_GPIO_WritePin(LAT_GPIO_Port,LAT_Pin,GPIO_PIN_SET) #define OE_L HAL_GPIO_WritePin(OE_GPIO_Port,OE_Pin,GPIO_PIN_RESET) #define R1_L HAL_GPIO_WritePin(R1_GPIO_Port,R1_Pin,GPIO_PIN_RESET) #define R2_L HAL_GPIO_WritePin(R2_GPIO_Port,R2_Pin,GPIO_PIN_RESET) #define G1_L HAL_GPIO_WritePin(G1_GPIO_Port,G1_Pin,GPIO_PIN_RESET) #define G2_L HAL_GPIO_WritePin(G2_GPIO_Port,G2_Pin,GPIO_PIN_RESET) #define B1_L HAL_GPIO_WritePin(B1_GPIO_Port,B1_Pin,GPIO_PIN_RESET) #define B2_L HAL_GPIO_WritePin(B2_GPIO_Port,B2_Pin,GPIO_PIN_RESET) #define A_L HAL_GPIO_WritePin(A_GPIO_Port,A_Pin,GPIO_PIN_RESET) #define B_L HAL_GPIO_WritePin(B_GPIO_Port,B_Pin,GPIO_PIN_RESET) #define CLK_L HAL_GPIO_WritePin(CLK_GPIO_Port,CLK_Pin,GPIO_PIN_RESET) #define LAT_L HAL_GPIO_WritePin(LAT_GPIO_Port,LAT_Pin,GPIO_PIN_RESET) //此单元板4扫一次性输入2行数据，2个通道，故控制22LED_ROW=16行 #define LED_ROW 4 //一行32个点 #define LED_COLUMN 32 typedef struct { uint16_t B:5; uint16_t G:5; uint16_t R:5; uint16_t null:1; }led_data; extern const unsigned char gImage_111[1024]; led_data img_data = (led_data)gImage_111; void delay(uint16_t time) { uint16_t i,j; for(i=0;i for(j=0;j<100;j++); } void led_DRamDis(led_data pdata) { uint16_t col_depth; uint16_t j,k,l; uint16_t row=0; uint16_t pos_down = LED_COLUMNLED_ROW2; //指向LED下半部分数据起点 if(pdata == NULL) return; for(row = 0;row { for(col_depth=0;col_depth<32;col_depth++) //每种颜色5bit，32种变化 { OE_H; for(l=0;l<4;l++) //一行48像素点数据 { for(k=0;k<2;k++) //发送16像素点数据后，数据被续写 { for(j=0;j<8;j++) //发送8像素点数据后数据会跳转 { if(col_depth else B1_L; if(col_depth else R1_L; if(col_depth else G1_L; if(col_depth else B2_L; if(col_depth else R2_L; if(col_depth else G2_L; CLK_L; CLK_H; } } } //使能一行数据 if(row&0x01) A_H; else A_L; if(row&0x02) B_H; else B_L; LAT_L; LAT_H; OE_L; delay(10); //短暂延时，让当前行数据显示一段时间 } } } led_data img_data2[512]; void RedDis(uint8_t r) { uint16_t i; for(i=0;i<512;i++) { img_data2.R = r; img_data2.G = 0; img_data2.B = 0; } for(i=0;i<5;i++) led_DRamDis(img_data2); } void BlueDis(uint8_t b) { uint16_t i; for(i=0;i<512;i++) { img_data2.R = 0; img_data2.G = 0; img_data2.B = b; } for(i=0;i<5;i++) led_DRamDis(img_data2); } void GreenDis(uint8_t g) { uint16_t i; for(i=0;i<512;i++) { img_data2.R = 0; img_data2.G = g; img_data2.B = 0; } for(i=0;i<5;i++) led_DRamDis(img_data2); } int main(void) { uint16_t i; uint16_t p; HAL_Init(); SystemClock_Config(); MX_GPIO_Init(); MX_TIM7_Init(); while (1) { for(i=0;i<16;i++) RedDis(i); for(i=0;i<16;i++) BlueDis(i); for(i=0;i<16;i++) GreenDis(i); for(i=0;i<100;i++) led_DRamDis(img_data); } } void SystemClock_Config(void) { RCC_OscInitTypeDef RCC_OscInitStruct = {0}; RCC_ClkInitTypeDef RCC_ClkInitStruct = {0}; /* Configure the main internal regulator output voltage / __HAL_RCC_PWR_CLK_ENABLE(); __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1); /* Initializes the CPU, AHB and APB busses clocks / RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE; RCC_OscInitStruct.HSEState = RCC_HSE_ON; RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE; RCC_OscInitStruct.PLL.PLLM = 8; RCC_OscInitStruct.PLL.PLLN = 336; RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2; RCC_OscInitStruct.PLL.PLLQ = 4; if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) { Error_Handler(); } /* Initializes the CPU, AHB and APB busses clocks / RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK\|RCC_CLOCKTYPE_SYSCLK \|RCC_CLOCKTYPE_PCLK1\|RCC_CLOCKTYPE_PCLK2; RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK; RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4; RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2; if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5) != HAL_OK) { Error_Handler(); } } void Error_Handler(void) { } 图像数据数组采用Image2Lcd 2.9生成，搞单片机的人应该对此很熟悉。16位RBG555数据格式 const unsigned char gImage_111[1024] = { / 0X00,0X10,0X20,0X00,0X10,0X00,0X00,0X1B, */ 0XE9,0X03,0XE9,0X03,0XE9,0X03,0XC9,0X03,0XE9,0X03,0XC9,0X03,0XE9,0X03,0XE9,0X03, 0XE9,0X03,0XE9,0X03,0XE9,0X03,0XE9,0X03,0XE9,0X03,0XE9,0X03,0XE9,0X03,0XE9,0X03, 0XC9,0X03,0XE9,0X03,0XC9,0X03,0XE9,0X03,0XE9,0X03,0XE9,0X03,0XE9,0X03,0XE9,0X03, 0XE9,0X03,0XC9,0X03,0XE9,0X03,0XE9,0X03,0XC9,0X03,0XE9,0X03,0XC9,0X03,0XE9,0X03, 0XE9,0X03,0XE9,0X03,0XE9,0X03,0XE9,0X03,0XE9,0X03,0XC9,0X03,0XC9,0X03,0XC9,0X03, 0XE9,0X03,0XC9,0X03,0XE9,0X03,0XC9,0X03,0XE9,0X03,0XE8,0X03,0XE9,0X03,0XE9,0X03, 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2022-2-28 11:52:19 评论举报张览秀