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Moving function for setting display backlight level from display driver to 'platform.c' file

This commit is contained in:
Silvano Seva 2020-10-22 14:54:09 +02:00 committed by Niccolò Izzo
parent a75b9fa635
commit 06346ac827
5 changed files with 59 additions and 38 deletions
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7
openrtx/include/interfaces/display.h
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@ -87,13 +87,6 @@ uint16_t display_screenWidth();
*/ */
uint16_t display_screenHeight(); uint16_t display_screenHeight();
/**
* Set screen backlight to a given level.
* @param level: backlight level, from 0 (backlight off) to 255 (backlight at
* full brightness).
*/
void display_setBacklightLevel(uint8_t level);
/** /**
* Copy a given section, between two given rows, of framebuffer content to the * Copy a given section, between two given rows, of framebuffer content to the
* display. * display.

1
openrtx/src/.keep
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@ -1 +0,0 @@

29
platform/drivers/display/HX83XX_md380.c
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@ -144,29 +144,6 @@ void display_init()
/* Clear framebuffer, setting all pixels to 0xFFFF makes the screen white */ /* Clear framebuffer, setting all pixels to 0xFFFF makes the screen white */
memset(frameBuffer, 0xFF, fbSize); memset(frameBuffer, 0xFF, fbSize);
/*
* Configure TIM8 for backlight PWM: Fpwm = 100kHz, 8 bit of resolution
* APB2 freq. is 84MHz, then: PSC = 327 to have Ftick = 256.097kHz
* With ARR = 256, Fpwm is 100kHz;
*/
RCC->APB2ENR |= RCC_APB2ENR_TIM8EN;
TIM8->ARR = 255;
TIM8->PSC = 327;
TIM8->CNT = 0;
TIM8->CR1 |= TIM_CR1_ARPE; /* LCD backlight is on PC6, TIM8-CH1 */
TIM8->CCMR1 |= TIM_CCMR1_OC1M_2
| TIM_CCMR1_OC1M_1
| TIM_CCMR1_OC1PE;
TIM8->CCER |= TIM_CCER_CC1E;
TIM8->BDTR |= TIM_BDTR_MOE;
TIM8->CCR1 = 0;
TIM8->EGR = TIM_EGR_UG; /* Update registers */
TIM8->CR1 |= TIM_CR1_CEN; /* Start timer */
/* Configure backlight GPIO, TIM8 is on AF3 */
gpio_setMode(GPIOC, 6, ALTERNATE);
gpio_setAlternateFunction(GPIOC, 6, 3);
/* /*
* Turn on DMA2 and configure its interrupt. DMA is used to transfer the * Turn on DMA2 and configure its interrupt. DMA is used to transfer the
* framebuffer content to the screen without using CPU. * framebuffer content to the screen without using CPU.
@ -368,7 +345,6 @@ void display_terminate()
/* Shut off backlight, FSMC and deallocate framebuffer */ /* Shut off backlight, FSMC and deallocate framebuffer */
gpio_setMode(GPIOC, 6, OUTPUT); gpio_setMode(GPIOC, 6, OUTPUT);
gpio_clearPin(GPIOC, 6); gpio_clearPin(GPIOC, 6);
RCC->APB2ENR &= ~RCC_APB2ENR_TIM8EN;
RCC->AHB3ENR &= ~RCC_AHB3ENR_FSMCEN; RCC->AHB3ENR &= ~RCC_AHB3ENR_FSMCEN;
if(frameBuffer != NULL) if(frameBuffer != NULL)
{ {
@ -386,11 +362,6 @@ uint16_t display_screenHeight()
return SCREEN_HEIGHT; return SCREEN_HEIGHT;
} }
void display_setBacklightLevel(uint8_t level)
{
TIM8->CCR1 = level;
}
void display_renderRows(uint8_t startRow, uint8_t endRow) void display_renderRows(uint8_t startRow, uint8_t endRow)
{ {
/* /*

1
platform/targets/.keep
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@ -1 +0,0 @@

59
platform/targets/MD380/platform.c Normal file
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@ -0,0 +1,59 @@
/***************************************************************************
* Copyright (C) 2020 by Federico Amedeo Izzo IU2NUO, *
* Niccolò Izzo IU2KIN *
* Silvano Seva IU2KWO *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 3 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, see <http://www.gnu.org/licenses/> *
***************************************************************************/
#include <stm32f4xx.h>
#include "platform.h"
#include "gpio.h"
void platform_init()
{
/*
* Configure TIM8 for backlight PWM: Fpwm = 100kHz, 8 bit of resolution
* APB2 freq. is 84MHz, then: PSC = 327 to have Ftick = 256.097kHz
* With ARR = 256, Fpwm is 100kHz;
*/
RCC->APB2ENR |= RCC_APB2ENR_TIM8EN;
TIM8->ARR = 255;
TIM8->PSC = 327;
TIM8->CNT = 0;
TIM8->CR1 |= TIM_CR1_ARPE; /* LCD backlight is on PC6, TIM8-CH1 */
TIM8->CCMR1 |= TIM_CCMR1_OC1M_2
| TIM_CCMR1_OC1M_1
| TIM_CCMR1_OC1PE;
TIM8->CCER |= TIM_CCER_CC1E;
TIM8->BDTR |= TIM_BDTR_MOE;
TIM8->CCR1 = 0;
TIM8->EGR = TIM_EGR_UG; /* Update registers */
TIM8->CR1 |= TIM_CR1_CEN; /* Start timer */
/* Configure backlight GPIO, TIM8 is on AF3 */
gpio_setMode(GPIOC, 6, ALTERNATE);
gpio_setAlternateFunction(GPIOC, 6, 3);
}
void platform_terminate()
{
/* Shut off backlight */
RCC->APB2ENR &= ~RCC_APB2ENR_TIM8EN;
}
void platform_setBacklightLevel(uint8_t level)
{
TIM8->CCR1 = level;
}