michaelh/zephyr
1
0
Fork 0
Code Releases Activity

samples: display: Use ST7789V generic shield

Browse source 
Use the ST7789V generic shield in ST7789V display sample

Signed-off-by: Jan Van Winkel <jan.van_winkel@dxplore.eu>
This commit is contained in:
Jan Van Winkel 2019-11-11 12:34:57 +01:00 • committed by Anas Nashif
commit 3e63d6a088
5 changed files with 24 additions and 56 deletions
Download patch file Download diff file Expand all files Collapse all files

38
samples/display/st7789v/README.rst
View file

@ -18,25 +18,26 @@ controller orientation.
Building and Running
********************
The sample has a board overlay for a nrf52832 based board with the following
pin assignments:
+-------------+-------------+
| | nRF52832 | | LCD module|
| | Pin | | signal |
+=============+=============+
| P0.03 | SPI_SCK |
+-------------+-------------+
| P0.05 | SPI_MOSI |
+-------------+-------------+
| P0.26 | SPI_MISO |
+-------------+-------------+
| P0.27 | CS |
+-------------+-------------+
| P0.25 | DATA/CMD |
+-------------+-------------+
| P0.02 | RESET |
+-------------+-------------+
The sample uses the :ref:`st7789v_generic` and the pin assignments on a
:ref:`nrf52_pca10040` are as follows:
+-------------------+-------------+
| | NRF52 PCA10040 | | LCD module|
| | Pin | | signal |
+===================+=============+
| P1.15 (D13) | SPI_SCK |
+-------------------+-------------+
| P1.14 (D12) | SPI_MISO |
+-------------------+-------------+
| P1.13 (D11) | SPI_MOSI |
+-------------------+-------------+
| P1.12 (D10) | CS |
+-------------------+-------------+
| P1.11 (D9) | DATA/CMD |
+-------------------+-------------+
| P1.10 (D8) | RESET |
+-------------------+-------------+
You might need to alter these according to your specific board/LCD configuration.
@ -45,6 +46,7 @@ For :ref:`nrf52_pca10040`, build this sample application with the following comm
.. zephyr-app-commands::
:zephyr-app: samples/display/st7789v
:board: nrf52_pca10040
:shield: st7789v_generic
:goals: build
:compact:

25
samples/display/st7789v/nrf52_pca10040.overlay
View file

@ -1,25 +0,0 @@
/*
* Copyright (c) 2019 Creative Product Design
*
* SPDX-License-Identifier: Apache-2.0
*/
&spi0 {
status = "okay";
sck-pin = <3>;
mosi-pin = <5>;
miso-pin = <26>;
cs-gpios = <&gpio0 27 0>;
st7789v@0 {
compatible = "sitronix,st7789v";
label = "DISPLAY";
spi-max-frequency = <20000000>;
reg = <0>;
cmd-data-gpios = <&gpio0 25 0>;
reset-gpios = <&gpio0 2 0>;
width = <320>;
height = <170>;
y-offset = <35>;
};
};

13
samples/display/st7789v/prj.conf
View file

@ -1,15 +1,4 @@
CONFIG_PRINTK=y
CONFIG_HEAP_MEM_POOL_SIZE=16384
CONFIG_GPIO=y
CONFIG_SPI=y
CONFIG_DISPLAY=y
CONFIG_ST7789V=y
CONFIG_ST7789V_LCD_TL019FQV01=y
CONFIG_ST7789V_RGB565=y
CONFIG_DISPLAY_LOG_LEVEL_DBG=y
CONFIG_LOG=y
CONFIG_DISPLAY_LOG_LEVEL_DBG=y

3
samples/display/st7789v/sample.yaml
View file

@ -5,4 +5,5 @@ tests:
sample.display.st7789v:
build_only: true
platform_whitelist: nrf52_pca10040
tags: display
extra_args: SHIELD=st7789v_generic
tags: display shield

1
samples/display/st7789v/src/main.c
View file

@ -121,6 +121,7 @@ void main(void)
*(buf + idx + 1) = (color_rgb >> 0) & 0xFFU;
}
#else
int color = cnt % 4;
u32_t color_rgb;
u32_t c = grey_count & 0xff;