ESP32 C3 Support

[apcameron]

I have managed to get this running on my ESP32 C3 which has a RISC-V Processor. I added a SD Card and wired it according to the pins listed below Below is my hardware config file called esp32-c3.h

``#ifndef ESP32_H

define ESP32_H

// SPI_DRIVER_SELECT must be set to 0 in SdFat/SdFatConfig.h (default is 0)

SdFat SD;

define SCK 0

define MOSI 2

define MISO 1

define SD_CS 10

define SPIINIT SCK,MISO,MOSI,SD_CS // sck, miso, mosi, cs

define SDMHZ 20

define SDINIT SD_CS,SD_SCK_MHZ(SDMHZ)

define LED 5

define LEDinv 0

define BOARD "ESP32 C3"

define board_esp32

define board_digital_io

uint8 esp32bdos(uint16 dmaaddr) { return(0x00); }

endif

[MockbaTheBorg]

Awesome news. Have you joined our Discord already? The invite link is on the readme.

[guidol70]

@apcameron I also did get RunCPM to work on a ESP C3 last May ;)

Does also work on a ESP S2.

The next test will be the Lilygo T-Dongle S3 with ESP-S3 MCU ;)

[guidol70]

This is my

include "hardware/esp32/espc3-32s.h"

with comments:

#ifndef ESP32_H
#define ESP32_H

SdFat SD;

//ESPC3-32S
//SDCard-Connection-Definition
#define SS    1     // SS/C(ard/hip)S(elect)
#define SCK   7     // Clock
#define MISO  8
#define MOSI  2

// GPIOs 14,15,16,17 are only for the internal SPI-Flash and cant be used :(
// GPIO 18 & 19 is for the white Power-LED
// GPIO 3,4 & 5 are for the R G B LED
// with GPIO 1 & 2 the Power-LED doesnt shine so bright when using SPI

#define SPIINIT SCK,MISO,MOSI,SS
#define SPIINIT_TXT "7,8,2,1"

#define SDINIT SS, SD_SCK_MHZ(SDMHZ)     // ESP32 >= Core v2.0.1

#define SDMHZ 19
#define SDMHZ_TXT "19"
#define LEDY        18 // LED Yellow/Orange
#define LEDW        19 // LED White
#define LEDR        3  // LED Red
#define LEDG        4  // LED Green
#define LEDB        5  // LED Blue
#define LED         3  // LED used as Disk-LED
#define W_LED       3  // LED used as write-Disk-LED
#define R_LED       4  // LED used as read-Disk-LED
#define LEDinv 0
#define BOARD "ESPC3-32S"
#define board_esp32
#define board_digital_io

uint8 esp32bdos(uint16 dmaaddr) {
    return(0x00);
}

#endif

[apcameron]

Awesome news. Have you joined our Discord already? The invite link is on the readme.

No I prefer not to use discord.

[MockbaTheBorg]

I understand. It is just that there we have a team of users always online, so often things are answered quicker. But hey, happy that you are enjoying RunCPM.