Search found 5 matches

by RobertWood
Mon Nov 13, 2023 3:33 am
Forum: EVE2 & EVE3 & EVE4 SPI TFT's
Topic: Connect ESP32-S3 to the graphics chip BT815Q via SPI
Replies: 6
Views: 14923

Re: Connect ESP32-S3 to the graphics chip BT815Q via SPI

Hey guys, I have the problem that the BT815 has stopped "talking" to me. If I want to query the ChipID after restarting the system, there is no longer an answer on the MISO line. Previously I connected an Arduino Mega to the monitor using this library: https://github.com/MatrixOrbital/EVE3...
by RobertWood
Thu Nov 02, 2023 2:49 am
Forum: EVE2 & EVE3 & EVE4 SPI TFT's
Topic: Connect ESP32-S3 to the graphics chip BT815Q via SPI
Replies: 6
Views: 14923

Re: Connect ESP32-S3 to the graphics chip BT815Q via SPI

Hey, Thank you, Raquel, for your response. I've since resolved my issues and made significant revisions to the code provided. My assumption that I could read the Chip ID was incorrect. The BT815Q writes some data to the MISO line during the write process from the master, and this data can be discard...
by RobertWood
Wed Oct 25, 2023 9:59 am
Forum: EVE2 & EVE3 & EVE4 SPI TFT's
Topic: Connect ESP32-S3 to the graphics chip BT815Q via SPI
Replies: 6
Views: 14923

Re: Connect ESP32-S3 to the graphics chip BT815Q via SPI

I have another question related to the topic: I couldn't find any information in the datasheet about how to interpret the data from the MISO line. I'm sending the following command to the chip: wr32(REG_FREQUENCY + RAM_REG, 0x3938700, spi); // Configure the system clock to 60MHz When I check this on...
by RobertWood
Wed Oct 25, 2023 1:42 am
Forum: EVE2 & EVE3 & EVE4 SPI TFT's
Topic: Connect ESP32-S3 to the graphics chip BT815Q via SPI
Replies: 6
Views: 14923

Re: Connect ESP32-S3 to the graphics chip BT815Q via SPI

Hey,
Thanks for the quick reply.

I would like to operate the following display:

https://riverdi.com/product/ritft43capux
by RobertWood
Mon Oct 23, 2023 9:04 am
Forum: EVE2 & EVE3 & EVE4 SPI TFT's
Topic: Connect ESP32-S3 to the graphics chip BT815Q via SPI
Replies: 6
Views: 14923

Connect ESP32-S3 to the graphics chip BT815Q via SPI

Hello there, I'd like to connect the ESP32-S3 to the BT815Q graphics chip from Bridgetek. For this, I'm following the instructions in the manual: https://brtchip.com/wp-content/uploads/2022/12/BRT_AN_033_BT81X-Series-Programming-Guide.pdf I'm also referring to the code example for Arduino: https://g...