317 lines
9.6 KiB
C
317 lines
9.6 KiB
C
/*!
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\file gd32f450z_lcd_eval.c
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\brief firmware functions to manage LCD
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*/
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/*
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Copyright (C) 2016 GigaDevice
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2016-10-19, V1.0.0, firmware for GD32F450Z
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*/
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#include "gd32f450z_lcd_eval.h"
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static void delay(uint32_t time);
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/*!
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\brief enable the LCD
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\param[in] none
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\param[out] none
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\retval none
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*/
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void lcd_enable(void)
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{
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gpio_bit_set(LCD_CS_GPIO_PORT, LCD_CS_PIN);
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}
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/*!
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\brief disable the LCD
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\param[in] none
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\param[out] none
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\retval none
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*/
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void lcd_disable(void)
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{
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gpio_bit_reset(LCD_CS_GPIO_PORT, LCD_CS_PIN);
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}
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/*!
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\brief configure the LCD control line
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\param[in] none
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\param[out] none
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\retval none
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*/
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void lcd_ctrl_line_config(void)
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{
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/* enable GPIOs clock*/
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rcu_periph_clock_enable(LCD_CS_GPIO_CLK);
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rcu_periph_clock_enable(LCD_RS_GPIO_CLK);
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/* configure LCD_CS_GPIO_PORT(PD11) and LCD_RS_GPIO_PORT(PE3) */
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gpio_mode_set(LCD_CS_GPIO_PORT, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, LCD_CS_PIN);
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gpio_output_options_set(LCD_CS_GPIO_PORT, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ,LCD_CS_PIN);
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gpio_mode_set(LCD_RS_GPIO_PORT, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, LCD_RS_PIN);
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gpio_output_options_set(LCD_RS_GPIO_PORT, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ,LCD_RS_PIN);
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/* set the chip select pin */
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lcd_ctrl_line_set(LCD_CS_GPIO_PORT, LCD_CS_PIN);
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}
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/*!
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\brief set the LCD control line
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\param[in] gpiox: control line GPIO
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\arg LCD_CS_GPIO_PORT: LCD chip select GPIO
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\arg LCD_RS_GPIO_PORT: LCD register/RAM selection GPIO
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\param[in] gpiopin: control line pin
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\arg LCD_CS_PIN: LCD chip select pin
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\arg LCD_RS_PIN: LCD register/RAM selection pin
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\param[out] none
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\retval none
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*/
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void lcd_ctrl_line_set(uint32_t gpiox, uint16_t gpiopin)
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{
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gpio_bit_set(gpiox, gpiopin);
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}
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/*!
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\brief reset the LCD control line
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\param[in] gpiox: control line GPIO
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\arg LCD_CS_GPIO_PORT: LCD chip select GPIO
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\arg LCD_RS_GPIO_PORT: LCD register/RAM selection GPIO
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\param[in] gpiopin: control line pin
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\arg LCD_CS_PIN: LCD chip select pin
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\arg LCD_RS_PIN: LCD register/RAM selection pin
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\param[out] none
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\retval none
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*/
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void lcd_ctrl_line_reset(uint32_t gpiox, uint16_t gpiopin)
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{
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gpio_bit_reset(gpiox, gpiopin);
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}
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/*!
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\brief configure the LCD SPI and it's GPIOs
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\param[in] none
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\param[out] none
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\retval none
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*/
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void lcd_spi_config(void)
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{
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spi_parameter_struct spi_init_struct;
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rcu_periph_clock_enable(RCU_GPIOG);
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rcu_periph_clock_enable(RCU_SPI5);
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/* configure SPI5_SCK(PG13) and SPI5_MOSI(PG14) */
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gpio_af_set(GPIOG,GPIO_AF_5,GPIO_PIN_13);
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gpio_af_set(GPIOG,GPIO_AF_5,GPIO_PIN_14);
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gpio_mode_set(GPIOG, GPIO_MODE_AF, GPIO_PUPD_NONE, GPIO_PIN_13|GPIO_PIN_14);
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gpio_output_options_set(GPIOG, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_13|GPIO_PIN_14);
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spi_i2s_deinit(SPI5);
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if(0 == (SPI_CTL0(LCD_SPI) & SPI_CTL0_SPIEN)){
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spi_init_struct.trans_mode = SPI_TRANSMODE_FULLDUPLEX;
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spi_init_struct.device_mode = SPI_MASTER;
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spi_init_struct.frame_size = SPI_FRAMESIZE_8BIT;
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spi_init_struct.clock_polarity_phase = SPI_CK_PL_LOW_PH_1EDGE;
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spi_init_struct.nss = SPI_NSS_SOFT;
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spi_init_struct.prescale = SPI_PSC_16;
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spi_init_struct.endian = SPI_ENDIAN_MSB;
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spi_init(LCD_SPI, &spi_init_struct);
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spi_enable(LCD_SPI);
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}
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}
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/*!
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\brief write command to select LCD register
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\param[in] lcd_register: the address of the selected register
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\param[out] none
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\retval none
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*/
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void lcd_command_write(uint8_t lcd_register)
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{
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/* reset LCD_RS to send command */
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lcd_ctrl_line_reset(LCD_RS_GPIO_PORT, LCD_RS_PIN);
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/* reset LCD control line and send command */
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lcd_disable();
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while(RESET == spi_i2s_flag_get(LCD_SPI, SPI_FLAG_TBE)) ;
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spi_i2s_data_transmit(LCD_SPI, lcd_register);
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/* wait until a data is sent */
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while(RESET != spi_i2s_flag_get(LCD_SPI, SPI_FLAG_TRANS));
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lcd_enable();
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}
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/*!
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\brief write data to select LCD register
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\param[in] value: the value that will be written to the selected register
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\param[out] none
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\retval none
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*/
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void lcd_data_write(uint8_t value)
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{
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/* set LCD_RS to send data */
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lcd_ctrl_line_set(LCD_RS_GPIO_PORT, LCD_RS_PIN);
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/* reset LCD control line and send data */
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lcd_disable();
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while(RESET == spi_i2s_flag_get(LCD_SPI, SPI_FLAG_TBE)) ;
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spi_i2s_data_transmit(LCD_SPI, value);
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/* wait until a data is sent */
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while(RESET != spi_i2s_flag_get(LCD_SPI, SPI_FLAG_TRANS)) ;
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lcd_enable();
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}
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/*!
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\brief configure the LCD based on the power on sequence
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\param[in] none
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\param[out] none
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\retval none
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*/
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void lcd_power_on(void)
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{
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lcd_command_write(0x11);
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delay(120);
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lcd_command_write(0x36);
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lcd_data_write(0x48);
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lcd_command_write(0x3A);
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lcd_data_write(0x55);
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lcd_command_write(0xB4);
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lcd_data_write(0x11);
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lcd_command_write(0xB3);
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lcd_data_write(0x00);
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lcd_data_write(0x00);
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lcd_data_write(0x00);
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lcd_data_write(0x20);
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lcd_command_write(0xC0);
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lcd_data_write(0x10);
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lcd_data_write(0x3B);
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lcd_data_write(0x00);
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lcd_data_write(0x12);
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lcd_data_write(0x01);
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lcd_command_write(0xC5);
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lcd_data_write(0x07);
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lcd_command_write(0xC8);
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lcd_data_write(0x01 );
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lcd_data_write(0x36);
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lcd_data_write(0x00);
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lcd_data_write(0x02);
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lcd_data_write(0x00);
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lcd_data_write(0x1C);
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lcd_data_write(0x77);
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lcd_data_write(0x14);
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lcd_data_write(0x67);
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lcd_data_write(0x20);
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lcd_data_write(0x0E);
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lcd_data_write(0x00);
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lcd_command_write(0xD0);
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lcd_data_write(0x44);
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lcd_data_write(0x41 );
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lcd_data_write(0x08);
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lcd_data_write(0xC2);
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lcd_command_write(0xD1);
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lcd_data_write(0x50);
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lcd_data_write(0x11);
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lcd_command_write(0xD2);
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lcd_data_write(0x05);
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lcd_data_write(0x12);
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lcd_command_write(0xC6);
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lcd_data_write(0x83);
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lcd_command_write(0x29);
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delay(5);
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}
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/**
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* @brief New Version 3.5" TFT RGB Hardware needs add this initilize funtion ---By xufei 2016.10.21
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Modified by GAO HAIYANG, test pass, 17, Nov, 2016
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* @param None
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* @retval None
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*/
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void lcd_power_on3(void)
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{
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lcd_command_write(0xC0);//power control1 command/w/
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lcd_data_write(0x0A); // P-Gamma level//4.1875v
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lcd_data_write(0x0A); // N-Gamma level
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lcd_command_write(0xC1); // BT & VC Setting//power contrl2 command/w/
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lcd_data_write(0x41);
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lcd_data_write(0x07); // VCI1 = 2.5V
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lcd_command_write(0xC2); // DC1.DC0 Setting//power control3 for normal mode
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lcd_data_write(0x33);
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lcd_command_write(0xC5);//VCOM control
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lcd_data_write(0x00); //NV memory is not programmed
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lcd_data_write(0x42); // VCM Setting
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lcd_data_write(0x80); // VCM Register Enable
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lcd_command_write(0xB0); //interface mode control //Polarity Setting
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lcd_data_write(0x02);
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lcd_command_write(0xB1);//frame rate control for normal mode
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lcd_data_write(0xB0); // Frame Rate Setting//70 frame per second//no division for internal clocks
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lcd_data_write(0x11);//17 clocks per line period for idle mode at cpu interface
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lcd_command_write(0xB4);//dispaly inversion control
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lcd_data_write(0x00); // disable Z-inversion , column inversion
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lcd_command_write(0xB6); //display function control// RM.DM Setting
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lcd_data_write(0x70);////0xF0
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lcd_data_write(0x02);//direction of gate scan: G1->G480 one by one, source scan: S1->S960, scan cycle if interval scan in non-display area
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lcd_data_write(0x3B); // number of lines to drive LCD: 8*(0x3C) = 480
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lcd_command_write(0xB7); // Entry Mode
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lcd_data_write(0x07); // disable low voltage detection, normal display,
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lcd_command_write(0xF0); // Enter ENG , must be set before gamma setting
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lcd_data_write(0x36);
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lcd_data_write(0xA5);
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lcd_data_write(0xD3);
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lcd_command_write(0xE5); // Open gamma function , must be set before gamma setting
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lcd_data_write(0x80);
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lcd_command_write(0xE5); // Page 1
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lcd_data_write(0x01);
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lcd_command_write(0XB3); // WEMODE=0(Page 1) , pixels over window setting will be ignored.//frame rate control in partial mode/full colors
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lcd_data_write(0x00);
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lcd_command_write(0xE5); // Page 0
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lcd_data_write(0x00);
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lcd_command_write(0xF0); // Exit ENG , must be set before gamma setting
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lcd_data_write(0x36);
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lcd_data_write(0xA5);
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lcd_data_write(0x53);
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lcd_command_write(0xE0); // Gamma setting
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//y fine adjustment register for positive polarity
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lcd_data_write(0x00);
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lcd_data_write(0x35);
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lcd_data_write(0x33);
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//y gradient adjustment register for positive polarity
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lcd_data_write(0x00);
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//y amplitude adjustment register for positive polarity
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lcd_data_write(0x00);
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lcd_data_write(0x00);
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//y fine adjustment register for negative polarity
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lcd_data_write(0x00);
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lcd_data_write(0x35);
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lcd_data_write(0x33);
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//y gradient adjustment register for negative polarity
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lcd_data_write(0x00);
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//y amplitude adjustment register for negative polarity
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lcd_data_write(0x00);
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lcd_data_write(0x00);
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lcd_command_write(0x36); // memory data access control //
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lcd_data_write(0x48);//
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lcd_command_write(0x3A); // interface pixel format setting
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lcd_data_write(0x55);//16-bits
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lcd_command_write(0x11); // Exit sleep mode
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lcd_command_write(0x29); // Display on
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delay(10);
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}
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/*!
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\brief insert a delay time
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\param[in] time: delay time length
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\param[out] none
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\retval none
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*/
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static void delay(uint32_t time)
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{
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uint32_t timecount = time;
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while(0 != timecount--);
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}
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