【Arduino & Esp32】SD卡读写 |
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【Arduino & Esp32】SD卡读写
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目录
一、4 位 SD 总线模式二、1 位 SD 总线模式三、HSPI 总线模式四、VSPI 总线模式五、关于 SD 卡
开发板：NodeMCU32s（v1.3） SD卡读写模块：SDIO/SPI 二合一 SD卡：闪迪 32GB（TF卡，实际29.7GB）/ Kingston 32G (TF卡，实际29.1GB) 开发框架：Arduino Esp32 可以通过 SDMMC 和 SPI 两种方式读取SD/TF卡数据。 SDMMC 分为 1 位 SD 总线模式和 4 位 SD 总线模式Esp32 上有 4 组 SPI 外设，其中，控制器 SPI2 和 SPI3 分别使用带前缀 HSPI 和 VSPI 的信号总线。注意： 在程序下载前，需要断开 SD 卡供电，否则会出现报错。 【VSPI 除外】SD 卡在复位或重启前（按下Esp32的复位键）断开 SD 卡供电，在程序进入 setup 函数后恢复供电（因此需要在 setup 函数中加入适当延时），否则 Esp32 会无限重启。 【4 位 SD 总线模式、HSPI 会发生】下载程序到 Esp32 时未断开 SD 卡供电，出现报错信息：Timed out waiting for packet header 硬件连线方式： ----------------------------------------------- | NodeMCU32s | SD Card | | -------------------------------------------- | GPIO12 | D02 | | GPIO4 | D01 | | GPIO15 | CMD(MOSI) | | GPIO2 | D00(MISO) | | GPIO14 | CLK(SCK) | | GPIO13 | D03(SS) | | GND | GND | | VCC(3.3v) | VCC | ----------------------------------------------- #include "FS.h" #include "SD.h" #include "SD_MMC.h" void WriteFile(fs::FS &fs, const char *path, uint8_t *buf, int len) { //unsigned long start_time = millis(); Serial.printf("write [%s]...\n", path); File file = fs.open(path, FILE_WRITE); if (!file) { Serial.println("Failed to open file for writing"); return; } if (!file.write(buf, len)) { Serial.println("Write failed"); return; } file.flush(); file.close(); Serial.printf("Write [%s] Complete", path); } void ReadFile(fs::FS &fs, const char *path, uint8_t *buf, int len) { Serial.printf("read [%s]...\n", path); File file = fs.open(path); if (!file) { Serial.println("Failed to open file for reading"); return; } if (!file.read(buf, len)) { Serial.println("Read failed"); return; } file.close(); Serial.printf("Read [%s] Complete: %s", path, buf); } void testIO(fs::FS &fs) { char buf[] = "hello world"; WriteFile(fs, "/test.txt", (uint8_t *)buf, strlen(buf)); ReadFile(fs, "/test.txt", (uint8_t *)buf, strlen(buf)); } void setup() { // put your setup code here, to run once: Serial.begin(115200); Serial.println("请插入内存卡"); delay(8000); /* SD_MMC 4-bit Mode */ if (!SD_MMC.begin()) { Serial.println("Card Mount Failed"); return; } testIO(SD_MMC); SD_MMC.end(); // 取消SD挂载 void loop() { } 二、1 位 SD 总线模式硬件连线方式： ----------------------------------------------- | NodeMCU32s | SD Card | | -------------------------------------------- | - | D02 | | - | D01 | | GPIO15 | CMD(MOSI) | | GPIO2 | D00(MISO) | | GPIO14 | CLK(SCK) | | - | D03(SS) | | GND | GND | | VCC(3.3v) | VCC | ----------------------------------------------- #include "FS.h" #include "SD.h" #include "SD_MMC.h" void WriteFile(fs::FS &fs, const char *path, uint8_t *buf, int len) { //unsigned long start_time = millis(); Serial.printf("write [%s]...\n", path); File file = fs.open(path, FILE_WRITE); if (!file) { Serial.println("Failed to open file for writing"); return; } if (!file.write(buf, len)) { Serial.println("Write failed"); return; } file.flush(); file.close(); Serial.printf("Write [%s] Complete", path); } void ReadFile(fs::FS &fs, const char *path, uint8_t *buf, int len) { Serial.printf("read [%s]...\n", path); File file = fs.open(path); if (!file) { Serial.println("Failed to open file for reading"); return; } if (!file.read(buf, len)) { Serial.println("Read failed"); return; } file.close(); Serial.printf("Read [%s] Complete: %s", path, buf); } void testIO(fs::FS &fs) { char buf[] = "hello world"; WriteFile(fs, "/test.txt", (uint8_t *)buf, strlen(buf)); ReadFile(fs, "/test.txt", (uint8_t *)buf, strlen(buf)); } void setup() { // put your setup code here, to run once: Serial.begin(115200); Serial.println("请插入内存卡"); delay(8000); /* SD_MMC 1-bit Mode */ if (!SD_MMC.begin("/cdcard", true)) { Serial.println("Card Mount Failed"); return; } testIO(SD_MMC); SD_MMC.end(); // 取消SD挂载 void loop() { } 三、HSPI 总线模式硬件连线方式： ----------------------------------------------- | NodeMCU32s | SD Card | | -------------------------------------------- | - | D02 | | - | D01 | | GPIO13 | CMD(MOSI) | | GPIO12 | D00(MISO) | | GPIO14 | CLK(SCK) | | GPIO15 | D03(SS) | | GND | GND | | VCC(3.3v) | VCC | ----------------------------------------------- #include "FS.h" #include "SD.h" #include "SD_MMC.h" void WriteFile(fs::FS &fs, const char *path, uint8_t *buf, int len) { //unsigned long start_time = millis(); Serial.printf("write [%s]...\n", path); File file = fs.open(path, FILE_WRITE); if (!file) { Serial.println("Failed to open file for writing"); return; } if (!file.write(buf, len)) { Serial.println("Write failed"); return; } file.flush(); file.close(); Serial.printf("Write [%s] Complete", path); } void ReadFile(fs::FS &fs, const char *path, uint8_t *buf, int len) { Serial.printf("read [%s]...\n", path); File file = fs.open(path); if (!file) { Serial.println("Failed to open file for reading"); return; } if (!file.read(buf, len)) { Serial.println("Read failed"); return; } file.close(); Serial.printf("Read [%s] Complete: %s", path, buf); } void testIO(fs::FS &fs) { char buf[] = "hello world"; WriteFile(fs, "/test.txt", (uint8_t *)buf, strlen(buf)); ReadFile(fs, "/test.txt", (uint8_t *)buf, strlen(buf)); } void setup() { // put your setup code here, to run once: Serial.begin(115200); Serial.println("请插入内存卡"); delay(8000); /* SD SPI Mode at HSPI */ SPIClass spi = SPIClass(HSPI); spi.begin(14 /* SCK */, 12 /* MISO */, 13 /* MOSI */, 15 /* SS */); if (!SD.begin(15 /* SS */, spi, 80000000)) { Serial.println("Card Mount Failed"); return; } testIO(SD); SD_MMC.end(); // 取消SD挂载 void loop() { }采用 32GB 闪迪 TF卡出现以下问题： 硬件连线方式： ----------------------------------------------- | NodeMCU32s | SD Card | | -------------------------------------------- | - | D02 | | - | D01 | | GPIO23 | CMD(MOSI) | | GPIO19 | D00(MISO) | | GPIO18 | CLK(SCK) | | GPIO5 | D03(SS) | | GND | GND | | VCC(3.3v) | VCC | ----------------------------------------------- #include "FS.h" #include "SD.h" #include "SD_MMC.h" void WriteFile(fs::FS &fs, const char *path, uint8_t *buf, int len) { //unsigned long start_time = millis(); Serial.printf("write [%s]...\n", path); File file = fs.open(path, FILE_WRITE); if (!file) { Serial.println("Failed to open file for writing"); return; } if (!file.write(buf, len)) { Serial.println("Write failed"); return; } file.flush(); file.close(); Serial.printf("Write [%s] Complete", path); } void ReadFile(fs::FS &fs, const char *path, uint8_t *buf, int len) { Serial.printf("read [%s]...\n", path); File file = fs.open(path); if (!file) { Serial.println("Failed to open file for reading"); return; } if (!file.read(buf, len)) { Serial.println("Read failed"); return; } file.close(); Serial.printf("Read [%s] Complete: %s", path, buf); } void testIO(fs::FS &fs) { char buf[] = "hello world"; WriteFile(fs, "/test.txt", (uint8_t *)buf, strlen(buf)); ReadFile(fs, "/test.txt", (uint8_t *)buf, strlen(buf)); } void setup() { // put your setup code here, to run once: Serial.begin(115200); Serial.println("请插入内存卡"); delay(8000); /* SD SPI Mode at VSPI */ SPIClass spi = SPIClass(HSPI); spi.begin(18 /* SCK */, 19 /* MISO */, 23 /* MOSI */, 5 /* SS */); if (!SD.begin(5 /* SS */, spi, 80000000)) { Serial.println("Card Mount Failed"); return; } testIO(SD); SD_MMC.end(); // 取消SD挂载 void loop() { }采用 32GB 闪迪 TF卡出现 VSPI 同样问题，换成 32GB Kingston TF 卡正常。 参考： [1]: Arduino ESP32 读取SD卡接口选择参考 🚀 [2]: Arduino ESP32 使用HSPI和VSPI接口挂载SD卡区别 🚀 [3]: ESP32 使用HSPI 读写SD卡的方法 🚀 [4]: 玩转 ESP32 + Arduino (二十四) SD卡读写 🚀 五、关于 SD 卡SD（安全数码卡，Secure Digital Memory Card），由 MMC 基础发展而来。 根据尺寸，可划分为SD card、miniSD、microSD(TF)。根据容量，可划分为SDSC( |
换成 32GB Kingston TF 卡正常。如果还不正常可以尝试换容量小一点的 TF 卡。【本文地址】
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