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