Problem with programming flash through SPI
Posted: Wed Sep 05, 2018 8:28 am
Hi all,
Could someone help with the following?
I am using the BusPro-S corelis SPI debugger and programmer and I am trying to program ESP32 module through the SPI pins on the DevKitC. In the beginning I tried to write by pulling enable pin down, but I found out that in that case VDD_SDIO pin of the microcontroller, which gives power to the flash, is set to 0 so the flash has no power.
Later, as I noticed that GPIO0 pin (SPI boot) is set to 1 during system reset, I pulled down this pin disconnecting enable from ground and I managed to erase and read the flash, but still I cannot write.
Anyone have any idea on the topic? Thanks a lot!
Anastasis
Could someone help with the following?
I am using the BusPro-S corelis SPI debugger and programmer and I am trying to program ESP32 module through the SPI pins on the DevKitC. In the beginning I tried to write by pulling enable pin down, but I found out that in that case VDD_SDIO pin of the microcontroller, which gives power to the flash, is set to 0 so the flash has no power.
Later, as I noticed that GPIO0 pin (SPI boot) is set to 1 during system reset, I pulled down this pin disconnecting enable from ground and I managed to erase and read the flash, but still I cannot write.
Anyone have any idea on the topic? Thanks a lot!
Anastasis