M5Stack library and MCP2515

[Bbjodel]

Hello everyone,
I have an ESP32 WROOM 32 with a TFT ILI9341 SPI and a CAN MCP2515 SPI, but I can't operate the CAN if the command m5.begin (); is active in the code, if it is //m5.begin (); The CAN works.
My question is how to make the TFT Ili9341 spi with the CAN MCP2515 cohabit?

Ili9341:
Miso (not connected) otherwise GPIO19
Mosi ===> GPIO23
CS =====> GPIO15
DC =====> GPIO2
Reset ===> GPIO4
SCLK ===> GPIO18

MCP2515:
Miso ===> GPIO19
Mosi ===> GPIO23
CS =====> GPIO5
SCLK ===> GPIO18

I tried everything but without success it looks like the M5Stack library is incompatible and blocks the CAN.
Can you help me ?

Regards,
Alfred from France, sorry for my english....

[felmue]

Hello @Bbjodel

in order for two SPI slaves to work their CS needs to be connected to different GPIOs. See here.

Thanks
Felix

[Bbjodel]

Hello Felix Thank you for advancing, yes I know I was wrong by writing the effective position9341 CS = 15 and MCP2515 CS = 5.
For the CS of the MCP2515 I tried from others GPIO E it returned to conflict with the M5Stack library ...

[felmue]

Hello @Bbjodel

ok, I see. Have you looked at the debut output? Are there any errors?

Thanks
Felix

[Bbjodel]

I have this:
rst:0x1 (POWERON_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:1
load:0x3fff0018,len:4
load:0x3fff001c,len:1044
load:0x40078000,len:10124
load:0x40080400,len:5856
entry 0x400806a8
Entering Configuration Mode Successful!
Setting Baudrate Successful!
M5Stack initializing...OK
0,0,0.00,0,0
0,0,0.00,0,0
0,0,0.00,0,0
0,0,0.00,0,0
0,0,0.00,0,0
0,0,0.00,0,0

Felix can you see my code ?

If I deactive
//M5.begin();
//M5.Lcd.setTextColor(WHITE);
it works, strange.

385,1,38.50,81,170
385,1,38.50,81,170
385,1,38.50,81,170
385,1,38.50,81,170
385,1,38.50,81,170
385,1,38.50,81,170

[felmue]

Hello @Bbjodel

nothing stands out in the debug output unfortunately.

Have you tried to use two separate SPI busses? Maybe the two libraries (TFT and CAN) cannot work together?

Thanks
Felix

[Bbjodel]

I don't know like Debog ESP32 + MCP2515 with Arduino.
On the other hand, is there any other pines for SPI ?

[Bbjodel]

I don't understand anymore, now it works but I changed the Libraie the same but obviously more complete.
I hope it will work in time ...
Thank you Felix