Problem while interfacing MMC (RS-MMC) with esp8266!
Posted: Fri Dec 15, 2017 2:48 pmI'm using Nodemcu to read/write text files on a 64mb MMC (RS-MMC). The MMC is formatted to FAT file system.
The connections are as follows:
CS –> IO2
DI(MOSI)–>IO13
VSS1–> GND
VDD–>3.3v
SCLK–>IO14
Vss2–>GND
DO(MISO)–>IO12
Then i uploaded the CardInfo example from SD library. But for some reasons the esp cannot detect it. The MMC works fine on my pc. I dont know what am doing wrong. Is it the file system or the type of card (do I just have to use SD).
The connections are as follows:
CS –> IO2
DI(MOSI)–>IO13
VSS1–> GND
VDD–>3.3v
SCLK–>IO14
Vss2–>GND
DO(MISO)–>IO12
Then i uploaded the CardInfo example from SD library. But for some reasons the esp cannot detect it. The MMC works fine on my pc. I dont know what am doing wrong. Is it the file system or the type of card (do I just have to use SD).