To find the revision of an ESP32 chip two options are available:<\/p>\n Before starting make sure you have installed ESP32 on your machine. If you are on windows follow this tutorial:<\/p>\n Steps to install Arduino ESP32 support on Windows<\/a><\/p>\n Do not forget to check if this issue<\/a> affects your configuration.<\/p>\n Download the esptool<\/a> depending on your operating system:<\/p>\n To get the board details run the following command:<\/p>\n So for example on windows:<\/p>\n Chip is ESP32D0WDQ6 (revision 1) indicates chip ID and revision number.<\/p>\n The same applies for unix\/linux:<\/p>\n Alternatively you can flash your board using the following code found on A.Spiess site<\/a>: (Download: (\n\tESP32_Version.ino\t(1497 downloads\t)\n<\/a>\n)<\/p>\n The video explaining the process is here:<\/p>\n![\"\"](\"https:\/\/i0.wp.com\/xylem.aegean.gr\/~modestos\/mo.blog\/wp-content\/uploads\/2018\/09\/085225bb-17bd-46c5-9dad-ea5e56a56725-150x150.jpg?resize=150%2C150&ssl=1\")
<\/a><\/p>\n\n
<\/h3>\n
Intro<\/h3>\n
Use the esptool<\/h3>\n
\n
esptool --port PORTNUMBER flash_id<\/pre>\n
PS T:\\Documents\\code\\arduino> .\\esptool.exe --port COM25 flash_id\r\nesptool.py v2.1\r\nConnecting....\r\nDetecting chip type... ESP32\r\nChip is ESP32D0WDQ6 (revision 1)\r\nUploading stub...\r\nRunning stub...\r\nStub running...\r\nManufacturer: ef\r\nDevice: 4017\r\nDetected flash size: 8MB\r\nHard resetting...\r\nPS T:\\Documents\\code\\arduino><\/pre>\n
# python esptool.py --port COMXX flash_id<\/pre>\n
Flash your board<\/h3>\n
\/*\r\n This sketch reads the version number of hte ESP32 chip\r\n\r\n 2017-07-17 Andreas Spiess\r\n\r\n*\/\r\n\r\n#include \"soc\/efuse_reg.h\"\r\n\r\nint getChipRevision()\r\n{\r\n return (REG_READ(EFUSE_BLK0_RDATA3_REG) >> (EFUSE_RD_CHIP_VER_RESERVE_S)&&EFUSE_RD_CHIP_VER_RESERVE_V) ;\r\n}\r\n\r\nvoid setup() {\r\n Serial.begin(115200);\r\n delay(200);\r\n Serial.print(\"REG_READ(EFUSE_BLK0_RDATA3_REG) \");\r\n Serial.println(REG_READ(EFUSE_BLK0_RDATA3_REG), BIN);\r\n\r\n Serial.print(\"EFUSE_RD_CHIP_VER_RESERVE_S \");\r\n Serial.println(EFUSE_RD_CHIP_VER_RESERVE_S, BIN);\r\n\r\n Serial.print(\"EFUSE_RD_CHIP_VER_RESERVE_V \");\r\n Serial.println(EFUSE_RD_CHIP_VER_RESERVE_V, BIN);\r\n\r\n Serial.println();\r\n\r\n Serial.print(\"Chip Revision (official version): \");\r\n Serial.println(getChipRevision());\r\n \r\n Serial.print(\"Chip Revision from shift Operation \");\r\n Serial.println(REG_READ(EFUSE_BLK0_RDATA3_REG) >> 15, BIN);\r\n}\r\n\r\n\/\/ the loop function runs over and over again forever\r\nvoid loop() {\r\n}<\/pre>\n