Looking for a library for RA8835

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1

Have an LCD with the resolution of 320x160. It's controller is RA8835. currently looking for a library to drive it. Tried the U8G2 library, but seems that there isn't an option for my resolution.

2

If U8g2 supports your controller but not the specific resolution, you might consider looking into making copies of the controller initialization code and simply changing the resolution.

3

Tried that, and get compile errors about it being undefined.

4

You didn't mention that.

Well, neither I nor anyone else reading this will have any idea what "it" is.

Since you aren't showing any information regarding what you tried and how it failed, I guess you're not interested in getting U8g2 working, only in having a working and tested RA8835 library dropped into your lap.

Good luck with that!

5

in U8g2lib.h, i added these lines:

  public:
    U8G2_RA8835_320X160_1_6800(const u8g2_cb_t *rotation, uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3, uint8_t d4, uint8_t d5, uint8_t d6, uint8_t d7, uint8_t enable, uint8_t cs, uint8_t dc, uint8_t reset = U8X8_PIN_NONE) : U8G2() {
        // Adjust setup for 320x160 resolution, 6800 interface mode
        u8g2_Setup_ra8835_320x160_1(&u8g2, rotation, u8x8_byte_8bit_6800mode, u8x8_gpio_and_delay_arduino);
        u8x8_SetPin_8Bit_6800(getU8x8(), d0, d1, d2, d3, d4, d5, d6, d7, enable, cs, dc, reset);
    }
};

class U8G2_RA8835_320X160_1_8080 : public U8G2 {
  public:
    U8G2_RA8835_320X160_1_8080(const u8g2_cb_t *rotation, uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3, uint8_t d4, uint8_t d5, uint8_t d6, uint8_t d7, uint8_t enable, uint8_t cs, uint8_t dc, uint8_t reset = U8X8_PIN_NONE) : U8G2() {
        // Adjust setup for 320x160 resolution, 8080 interface mode
        u8g2_Setup_ra8835_320x160_1(&u8g2, rotation, u8x8_byte_arduino_8bit_8080mode, u8x8_gpio_and_delay_arduino);
        u8x8_SetPin_8Bit_8080(getU8x8(), d0, d1, d2, d3, d4, d5, d6, d7, enable, cs, dc, reset);
    }
};

class U8G2_RA8835_320X160_2_6800 : public U8G2 {
  public:
    U8G2_RA8835_320X160_2_6800(const u8g2_cb_t *rotation, uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3, uint8_t d4, uint8_t d5, uint8_t d6, uint8_t d7, uint8_t enable, uint8_t cs, uint8_t dc, uint8_t reset = U8X8_PIN_NONE) : U8G2() {
        // Adjust setup for 320x160 resolution, 6800 interface mode
        u8g2_Setup_ra8835_320x160_2(&u8g2, rotation, u8x8_byte_8bit_6800mode, u8x8_gpio_and_delay_arduino);
        u8x8_SetPin_8Bit_6800(getU8x8(), d0, d1, d2, d3, d4, d5, d6, d7, enable, cs, dc, reset);
    }
};

class U8G2_RA8835_320X160_2_8080 : public U8G2 {
  public:
    U8G2_RA8835_320X160_2_8080(const u8g2_cb_t *rotation, uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3, uint8_t d4, uint8_t d5, uint8_t d6, uint8_t d7, uint8_t enable, uint8_t cs, uint8_t dc, uint8_t reset = U8X8_PIN_NONE) : U8G2() {
        // Adjust setup for 320x160 resolution, 8080 interface mode
        u8g2_Setup_ra8835_320x160_2(&u8g2, rotation, u8x8_byte_arduino_8bit_8080mode, u8x8_gpio_and_delay_arduino);
        u8x8_SetPin_8Bit_8080(getU8x8(), d0, d1, d2, d3, d4, d5, d6, d7, enable, cs, dc, reset);
    }
};

class U8G2_RA8835_320X160_F_6800 : public U8G2 {
  public:
    U8G2_RA8835_320X160_F_6800(const u8g2_cb_t *rotation, uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3, uint8_t d4, uint8_t d5, uint8_t d6, uint8_t d7, uint8_t enable, uint8_t cs, uint8_t dc, uint8_t reset = U8X8_PIN_NONE) : U8G2() {
        // Adjust setup for 320x160 resolution, 6800 interface mode
        u8g2_Setup_ra8835_320x160_f(&u8g2, rotation, u8x8_byte_8bit_6800mode, u8x8_gpio_and_delay_arduino);
        u8x8_SetPin_8Bit_6800(getU8x8(), d0, d1, d2, d3, d4, d5, d6, d7, enable, cs, dc, reset);
    }
};

class U8G2_RA8835_320X160_F_8080 : public U8G2 {
  public:
    U8G2_RA8835_320X160_F_8080(const u8g2_cb_t *rotation, uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3, uint8_t d4, uint8_t d5, uint8_t d6, uint8_t d7, uint8_t enable, uint8_t cs, uint8_t dc, uint8_t reset = U8X8_PIN_NONE) : U8G2() {
        // Adjust setup for 320x160 resolution, 8080 interface mode
        u8g2_Setup_ra8835_320x160_f(&u8g2, rotation, u8x8_byte_arduino_8bit_8080mode, u8x8_gpio_and_delay_arduino);
        u8x8_SetPin_8Bit_8080(getU8x8(), d0, d1, d2, d3, d4, d5, d6, d7, enable, cs, dc, reset);
    }
};

but i get errors:

D:\Documents\Arduino\libraries\U8g2\src/U8g2lib.h:27106:5: error: 'u8g2_Setup_ra8835_320x160_f' was not declared in this scope
     u8g2_Setup_ra8835_320x160_f(&u8g2, rotation, u8x8_byte_8bit_6800mode, u8x8_gpio_and_delay_arduino);
     ^~~~~~~~~~~~~~~~~~~~~~~~~~~
D:\Documents\Arduino\libraries\U8g2\src/U8g2lib.h:27106:5: note: suggested alternative: 'u8g2_Setup_ra8835_320x240_f'
     u8g2_Setup_ra8835_320x160_f(&u8g2, rotation, u8x8_byte_8bit_6800mode, u8x8_gpio_and_delay_arduino);
     ^~~~~~~~~~~~~~~~~~~~~~~~~~~
     u8g2_Setup_ra8835_320x240_f
D:\Documents\Arduino\libraries\U8g2\src/U8g2lib.h: In constructor 'U8G2_RA8835_320X160_F_8080::U8G2_RA8835_320X160_F_8080(const u8g2_cb_t*, uint8_t, uint8_t, uint8_t, uint8_t, uint8_t, uint8_t, uint8_t, uint8_t, uint8_t, uint8_t, uint8_t, uint8_t)':
D:\Documents\Arduino\libraries\U8g2\src/U8g2lib.h:27112:2: error: 'u8g2_Setup_ra8835_320x160_f' was not declared in this scope
  u8g2_Setup_ra8835_320x160_f(&u8g2, rotation, u8x8_byte_arduino_8bit_8080mode, u8x8_gpio_and_delay_arduino);
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~
D:\Documents\Arduino\libraries\U8g2\src/U8g2lib.h:27112:2: note: suggested alternative: 'u8g2_Setup_ra8835_320x240_f'
  u8g2_Setup_ra8835_320x160_f(&u8g2, rotation, u8x8_byte_arduino_8bit_8080mode, u8x8_gpio_and_delay_arduino);
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~
  u8g2_Setup_ra8835_320x240_f
exit status 1
6

though a pre-done library would be nice...

7

Got it working with U8g2lib

20250317_174558
20250317_1745581868×4000 504 KB