TTGO TCALL SIM800L+SDCARD
I'm trying to use an sd card module with the TTGO T-call SIM800L.
I can't use the SPI pins because I need to use also the SIM800L module.
The SIM800L uses the standard pins 23 (PWR),this pin is MOSI to SD CARD
I have the TTGO T-CALL module version 1.4 and it would only generate conflict with pin 23.
In version 1.3 it would conflict with pin 5. RST to SIM800L and VPPI_SS (CP)
what is the solution?
Do you have an example that uses the SIM800L and SD CARD storage at the same time?
What is the reason to use these shared pins between the SIM800L and the connection for SD CARD?
Thanks for your reply.
@sasetcolombia You need to use unused IO pins. For example the IO2、15、18、19....... This can be seen in the schematic diagram