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ZinggJM / GFX_TFT

TFT Display Classes based on GFX_ROOT and GFX_Extensions
GNU General Public License v3.0
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Help For STM32 black_f407vg and RA8875 #2

Open gcharles81 opened 2 years ago

gcharles81 commented 2 years ago

Hello Thanks for this library I would like to try on my STM32 black_f407vg board and RA8875 5 inch display

I already have a setup running with RA8875 & Arduino DUE using another library From Sumotoy but I have been searching a lot to find an Arduino compatible library for RA8875 that works on STM32.

My setup with the STM32 I have connected the Ra8875 display to the below pins but I cannot find out where to set the pinouts , besides the following which takes only SS,DC,RST and BL , I find no where to set which SPI channel

TFT_SPI_PORT 2 // SPI port 2 maximum clock rate is 27MHz MOSI PB15 MISO PB14 SCLK PB13 CS PB12 RST PD8

Thanks appreciate if you can help

ZinggJM commented 2 years ago

Hello, thank you for your interest!

The SPI version of the GFX_TFT class for RA8875, GFX_SPI_RA8875, has 3 constructors:

    GFX_SPI_RA8875(int16_t cs_pin, int16_t dc_pin, int16_t rst_pin = -1, int16_t bl_pin = -1);
    GFX_SPI_RA8875(int16_t cs_pin, int16_t dc_pin, int16_t mosi_pin, int16_t sclk_pin, int16_t rst_pin, int16_t bl_pin = -1);
    GFX_SPI_RA8875(SPIClass *spi, int16_t cs_pin, int16_t dc_pin, int16_t rst_pin = -1, int16_t bl_pin = -1);

The first one uses the default HW SPI channel as defined by the Arduino package for the board you compile for. This is the only one I have tested with.

The second one should use SW SPI provided by the cloned Adafruit_SPITFT class.

The third should be able to use any SW or HW SPI class instance. It may bypass the Adafruit_SPITFT clone. Untested.

There is no other support for alternative HW SPI channels on multi-SPI capable processors.

Jean-Marc

gcharles81 commented 2 years ago

Thanks @ZinggJM for your input , I am initializing the instance with GFX_SPI_RA8875 tft(PB12,PB1,PB15,PB13,PC5); but I cannot get it to work with this Black STM32F407 board using the TFT connector https://stm32-base.org/boards/STM32F407VGT6-STM32F4XX-M.html