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Updates to enable working SPI TFT 

The backlight enable is active low on our board so the driver doesn't like it.
Toggling to GPIO manually for now.

As fixed the improper SPI bus pins definitions and it works!

Signed-off-by: Michael Welling <mwelling@ieee.org>
This commit is contained in:
Michael Welling 2020-02-01 18:28:22 -08:00
parent d99c2ffe4f
commit 33dcdd7c03
2 changed files with 5 additions and 2 deletions
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4
ports/nrf/boards/ohs2020_badge/board.c
View File

@ -49,7 +49,7 @@ uint8_t display_init_sequence[] = {
void board_init(void) {
busio_spi_obj_t* spi = &displays[0].fourwire_bus.inline_bus;
common_hal_busio_spi_construct(spi, &pin_P0_14, &pin_P0_15, mp_const_none);
common_hal_busio_spi_construct(spi, &pin_P0_11, &pin_P0_12, mp_const_none);
common_hal_busio_spi_never_reset(spi);
displayio_fourwire_obj_t* bus = &displays[0].fourwire_bus;
@ -81,7 +81,7 @@ void board_init(void) {
0x37, // set vertical scroll command
display_init_sequence,
sizeof(display_init_sequence),
&pin_P0_02, // backlight pin
NULL, // backlight pin
NO_BRIGHTNESS_COMMAND,
1.0f, // brightness (ignored)
true, // auto_brightness

3
ports/nrf/boards/ohs2020_badge/pins.c
View File

@ -1,4 +1,5 @@
#include "shared-bindings/board/__init__.h"
#include "shared-module/displayio/__init__.h"
STATIC const mp_rom_map_elem_t board_module_globals_table[] = {
{ MP_ROM_QSTR(MP_QSTR_MICROPHONE_CLOCK), MP_ROM_PTR(&pin_P0_25) },
@ -13,6 +14,8 @@ STATIC const mp_rom_map_elem_t board_module_globals_table[] = {
{ MP_ROM_QSTR(MP_QSTR_I2C), MP_ROM_PTR(&board_i2c_obj) },
{ MP_ROM_QSTR(MP_QSTR_SPI), MP_ROM_PTR(&board_spi_obj) },
{ MP_ROM_QSTR(MP_QSTR_DISPLAY), MP_ROM_PTR(&displays[0].display) },
};
MP_DEFINE_CONST_DICT(board_module_globals, board_module_globals_table);