497 lines
15 KiB
C
497 lines
15 KiB
C
/*!
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\file gd32f303e_lcd_eval.c
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\brief LCD driver functions
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*/
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/*
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Copyright (C) 2017 GigaDevice
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2017-05-19, V1.0.0, demo for GD32F30x
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*/
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#include "gd32f30x.h"
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#include "gd32f303e_lcd_eval.h"
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#include "lcd_font.h"
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/*!
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\brief lcd peripheral initialize
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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 exmc_lcd_init(void)
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{
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exmc_norsram_parameter_struct lcd_init_struct;
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exmc_norsram_timing_parameter_struct lcd_timing_init_struct;
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/* EXMC clock enable */
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rcu_periph_clock_enable(RCU_EXMC);
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/* GPIO clock enable */
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rcu_periph_clock_enable(RCU_GPIOD);
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rcu_periph_clock_enable(RCU_GPIOE);
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rcu_periph_clock_enable(RCU_GPIOG);
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/* configure EXMC_D[0~15]*/
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/* PD14(EXMC_D0), PD15(EXMC_D1),PD0(EXMC_D2), PD1(EXMC_D3), PD8(EXMC_D13), PD9(EXMC_D14), PD10(EXMC_D15) */
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gpio_init(GPIOD, GPIO_MODE_AF_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_0 | GPIO_PIN_1| GPIO_PIN_8 | GPIO_PIN_9 |
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GPIO_PIN_10 | GPIO_PIN_14 | GPIO_PIN_15);
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/* PE7(EXMC_D4), PE8(EXMC_D5), PE9(EXMC_D6), PE10(EXMC_D7), PE11(EXMC_D8), PE12(EXMC_D9),
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PE13(EXMC_D10), PE14(EXMC_D11), PE15(EXMC_D12) */
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gpio_init(GPIOE, GPIO_MODE_AF_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_7 | GPIO_PIN_8 | GPIO_PIN_9 |
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GPIO_PIN_10 | GPIO_PIN_11 | GPIO_PIN_12 |
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GPIO_PIN_13 | GPIO_PIN_14 | GPIO_PIN_15);
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/* configure PE2(EXMC_A23) */
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gpio_init(GPIOE, GPIO_MODE_AF_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_2);
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/* configure NOE and NWE */
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gpio_init(GPIOD, GPIO_MODE_AF_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_4 | GPIO_PIN_5);
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/* configure EXMC NE1 */
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gpio_init(GPIOG, GPIO_MODE_AF_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_9);
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lcd_timing_init_struct.asyn_access_mode = EXMC_ACCESS_MODE_A;
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lcd_timing_init_struct.syn_data_latency = EXMC_DATALAT_2_CLK;
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lcd_timing_init_struct.syn_clk_division = EXMC_SYN_CLOCK_RATIO_DISABLE;
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lcd_timing_init_struct.bus_latency = 2;
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lcd_timing_init_struct.asyn_data_setuptime = 10;
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lcd_timing_init_struct.asyn_address_holdtime = 2;
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lcd_timing_init_struct.asyn_address_setuptime = 5;
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lcd_init_struct.norsram_region = EXMC_BANK0_NORSRAM_REGION1;
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lcd_init_struct.write_mode = EXMC_ASYN_WRITE;
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lcd_init_struct.extended_mode = DISABLE;
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lcd_init_struct.asyn_wait = DISABLE;
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lcd_init_struct.nwait_signal = DISABLE;
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lcd_init_struct.memory_write = ENABLE;
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lcd_init_struct.nwait_config = EXMC_NWAIT_CONFIG_BEFORE;
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lcd_init_struct.wrap_burst_mode = DISABLE;
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lcd_init_struct.nwait_polarity = EXMC_NWAIT_POLARITY_LOW;
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lcd_init_struct.burst_mode = DISABLE;
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lcd_init_struct.databus_width = EXMC_NOR_DATABUS_WIDTH_16B;
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lcd_init_struct.memory_type = EXMC_MEMORY_TYPE_SRAM;
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lcd_init_struct.address_data_mux = DISABLE;
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lcd_init_struct.read_write_timing = &lcd_timing_init_struct;
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lcd_init_struct.write_timing = &lcd_timing_init_struct;
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exmc_norsram_init(&lcd_init_struct);
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exmc_norsram_enable(EXMC_BANK0_NORSRAM_REGION1);
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}
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/*!
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\brief write data to the selected LCD register
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\param[in] register_id: the selected register id
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\param[in] value: the register value to be written
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\param[out] none
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\retval none
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*/
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void lcd_register_write(uint16_t register_id,uint16_t value)
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{
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*(__IO uint16_t *) (BANK0_LCD_C)= register_id;
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*(__IO uint16_t *) (BANK0_LCD_D)= value;
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}
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/*!
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\brief read the value of LCD register
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\param[in] register_id: the register id
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\param[out] none
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\retval the register value
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*/
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uint16_t lcd_register_read(uint8_t register_id)
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{
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uint16_t data;
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*(__IO uint16_t *) (BANK0_LCD_C)= register_id;
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data = *(__IO uint16_t *) (BANK0_LCD_D);
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return data;
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}
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/*!
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\brief write command to LCD register
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\param[in] value: the register value to be written
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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(uint16_t value)
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{
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/* write 16-bit index, then write reg */
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*(__IO uint16_t *) (BANK0_LCD_D) = value;
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}
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/*!
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\brief prepare to write to the LCD GRAM register(R22h)
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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_gram_write_prepare(void)
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{
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*(__IO uint16_t *) (BANK0_LCD_C) = 0x0022;
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}
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/*!
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\brief write RGB code to the LCD GRAM register
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\param[in] rgb_code: the pixel color in RGB mode (5-6-5)
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\param[out] none
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\retval none
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*/
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void lcd_gram_write(uint16_t rgb_code)
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{
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/* write 16-bit GRAM register */
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*(__IO uint16_t *) (BANK0_LCD_D) = rgb_code;
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}
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/*!
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\brief read data from GRAM
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\param[in] none
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\param[out] none
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\retval GRAM value
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*/
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uint16_t lcd_gram_read(void)
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{
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uint16_t data;
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/* write GRAM register (R22h) */
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*(__IO uint16_t *) (BANK0_LCD_C) = 0x0022;
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/* dummy read (invalid data) */
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*(__IO uint16_t *) (BANK0_LCD_D);
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data = *(__IO uint16_t *) (BANK0_LCD_D);
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return data;
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}
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/*!
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\brief initialize 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_init(void)
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{
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uint16_t i;
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if(1){ /*!< if(device_code == 0x8989) */
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lcd_register_write(0x0000,0x0001);
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lcd_register_write(0x0003,0xA8A4);
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lcd_register_write(0x000C,0x0000);
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lcd_register_write(0x000D,0x080C);
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lcd_register_write(0x000E,0x2B00);
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lcd_register_write(0x001E,0x00B0);
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lcd_register_write(0x0001,0x2B3F);
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lcd_register_write(0x0002,0x0600);
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lcd_register_write(0x0010,0x0000);
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lcd_register_write(0x0011,0x6070);
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lcd_register_write(0x0005,0x0000);
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lcd_register_write(0x0006,0x0000);
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lcd_register_write(0x0016,0xEF1C);
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lcd_register_write(0x0017,0x0003);
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lcd_register_write(0x0007,0x0233);
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lcd_register_write(0x000B,0x0000);
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lcd_register_write(0x000F,0x0000);
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lcd_register_write(0x0041,0x0000);
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lcd_register_write(0x0042,0x0000);
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lcd_register_write(0x0048,0x0000);
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lcd_register_write(0x0049,0x013F);
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lcd_register_write(0x004A,0x0000);
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lcd_register_write(0x004B,0x0000);
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lcd_register_write(0x0044,0xEF00);
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lcd_register_write(0x0045,0x0000);
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lcd_register_write(0x0046,0x013F);
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lcd_register_write(0x0030,0x0707);
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lcd_register_write(0x0031,0x0204);
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lcd_register_write(0x0032,0x0204);
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lcd_register_write(0x0033,0x0502);
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lcd_register_write(0x0034,0x0507);
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lcd_register_write(0x0035,0x0204);
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lcd_register_write(0x0036,0x0204);
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lcd_register_write(0x0037,0x0502);
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lcd_register_write(0x003A,0x0302);
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lcd_register_write(0x003B,0x0302);
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lcd_register_write(0x0023,0x0000);
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lcd_register_write(0x0024,0x0000);
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lcd_register_write(0x0025,0x8000);
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lcd_register_write(0x004e,0);
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lcd_register_write(0x004f,0);
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}else{
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return;
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}
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for(i=50000;i>0;i--);
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}
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/*!
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\brief set the cursor of LCD
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\param[in] x: the row-coordinate
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\param[in] y: the column-coordinate
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\param[out] none
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\retval none
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*/
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void lcd_cursor_set(uint16_t x,uint16_t y)
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{
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lcd_register_write(0x004e,x);
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lcd_register_write(0x004f,y);
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}
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/*!
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\brief clear the LCD screen to the specified color
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\param[in] color: specified screen color
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\param[out] none
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\retval none
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*/
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void lcd_clear(uint16_t color)
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{
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uint32_t index=0;
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lcd_cursor_set(0,0);
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/* prepare to write GRAM */
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lcd_gram_write_prepare();
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for(index=0;index<76800;index++){
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*(__IO uint16_t *) (BANK0_LCD_D) = color;
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}
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}
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/*!
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\brief set the point according to the specified position and color
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\param[in] x: the row-coordinate
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\param[in] y: the column-coordinate
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\param[in] point: specified color of the point
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\param[out] none
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\retval none
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*/
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void lcd_point_set(uint16_t x,uint16_t y,uint16_t point)
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{
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if ((x > 240)||(y > 320)){
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return;
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}
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lcd_cursor_set(x,y);
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lcd_gram_write_prepare();
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lcd_gram_write(point);
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}
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/*!
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\brief get point GRAM according to the specified position
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\param[in] x: the row-coordinate
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\param[in] y: the column-coordinate
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\param[out] none
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\retval GRAM value of point
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*/
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uint16_t lcd_point_get(uint16_t x,uint16_t y)
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{
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uint16_t data;
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if ((x > 240)||(y > 320)){
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return 0;
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}
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lcd_cursor_set(x,y);
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data = lcd_gram_read();
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return data;
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}
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/*!
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\brief set window area
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\param[in] start_x: the start position of row-coordinate
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\param[in] start_y: the start position of column-coordinate
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\param[in] end_x: the end position of row-coordinate
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\param[in] end_y: the end position of column-coordinate
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\param[out] none
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\retval none
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*/
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void lcd_windows_set(uint16_t start_x,uint16_t start_y,uint16_t end_x,uint16_t end_y)
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{
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lcd_cursor_set(start_x, start_y);
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lcd_register_write(0x0050, start_x);
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lcd_register_write(0x0052, start_y);
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lcd_register_write(0x0051, end_x);
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lcd_register_write(0x0053, end_y);
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}
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/*!
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\brief draw a horizontal line on LCD screen
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\param[in] x: the row-coordinate
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\param[in] start_y: the start column-coordinate
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\param[in] end_y: the end column-coordinate
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\param[in] color: specified color of the point
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\param[in] width: line width
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\param[out] none
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\retval none
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*/
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void lcd_hline_draw(uint16_t x,uint16_t start_y,uint16_t end_y,uint16_t color,uint16_t width)
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{
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uint16_t i, y;
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for (i = 0; i < width; i++) {
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uint16_t sx = x + i;
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for (y = start_y; y < end_y; y++) {
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lcd_point_set(sx, y, color);
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}
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}
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}
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/*!
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\brief draw a rectangle according to the specified position and color
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\param[in] start_x: the start position of row-coordinate
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\param[in] start_y: the start position of column-coordinate
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\param[in] end_x: the end position of row-coordinate
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\param[in] end_y: the end position of column-coordinate
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\param[in] point: specified color of the point
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\param[out] none
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\retval none
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*/
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void lcd_rectangle_draw(uint16_t start_x,uint16_t start_y,uint16_t end_x,uint16_t end_y,uint16_t point)
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{
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uint16_t x,y;
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x=start_x;
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y=start_y;
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/* draw four lines */
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for(x=start_x;x<end_x;x++){
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/* draw a point */
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lcd_point_set(x,y,point);
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}
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for(y=start_y;y<end_y;y++){
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lcd_point_set(x,y,point);
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}
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for(x=end_x;x>start_x;x--){
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lcd_point_set(x,y,point);
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}
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for(y=end_y;y>start_y;y--){
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lcd_point_set(x,y,point);
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}
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}
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/*!
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\brief fill the specified color to a rectangle
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\param[in] start_x: the start position of row-coordinate
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\param[in] start_y: the start position of column-coordinate
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\param[in] end_x: the end position of row-coordinate
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\param[in] end_y: the end position of column-coordinate
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\param[in] color: specified color
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\param[out] none
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\retval none
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*/
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void lcd_rectangle_fill(uint16_t start_x,uint16_t start_y,uint16_t end_x,uint16_t end_y,uint16_t color)
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{
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uint16_t x, y;
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x = start_x;
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y = start_y;
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for (x = start_x; x < end_x; x++) {
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for (y = start_y; y < end_y; y++) {
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lcd_point_set(x, y, color);
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}
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}
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}
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/*!
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\brief draw a picture on LCD screen according to the specified position
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\param[in] start_x: the start position of row-coordinate
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\param[in] start_y: the start position of column-coordinate
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\param[in] end_x: the end position of row-coordinate
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\param[in] end_y: the end position of column-coordinate
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\param[in] pic: the picture pointer
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\param[out] none
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\retval none
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*/
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void lcd_picture_draw(uint16_t start_x,uint16_t start_y,uint16_t end_x,uint16_t end_y,uint16_t *pic)
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{
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uint32_t i, total;
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uint16_t *picturepointer = pic;
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uint16_t x,y;
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x = start_x;
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y = start_y;
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total = (end_x - start_x + 1) * (end_y - start_y + 1);
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for(i = 0; i < total; i ++){
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/* set point according to the specified position and color */
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lcd_point_set(x,y,*picturepointer++);
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x++;
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if(x > end_x){
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y++;
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x = start_x;
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}
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}
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}
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/*!
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\brief display a char on LCD screen according to the specified position
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\param[in] x: the start position of row-coordinate
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\param[in] y: the start position of column-coordinate
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\param[in] c: the char
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\param[in] char_color: the color of char
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\param[in] c_format: the struct of char format
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font: CHAR_FONT_8_16 or CHAR_FONT_16_24
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direction: CHAR_DIRECTION_HORIZONTAL or CHAR_DIRECTION_VERTICAL
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char_color: the color of char
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bk_color: the color of backgroud
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\param[out] none
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\retval none
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*/
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void lcd_char_display(uint16_t x,uint16_t y,uint8_t c,char_format_struct c_format)
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{
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uint16_t i = 0, j = 0;
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uint8_t temp_char = 0;
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uint16_t temp_char_16 = 0;
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if(CHAR_FONT_8_16 == c_format.font){ /* 8x16 ASCII */
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for (i = 0; i < 16; i++) {
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temp_char = ascii_8x16[((c - 0x20) * 16) + i];
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if(CHAR_DIRECTION_HORIZONTAL == c_format.direction){
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for (j = 0; j < 8; j++) {
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if (((temp_char >> (7 - j)) & 0x01) == 0x01) {
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/* set point of char */
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lcd_point_set(x - i, y + j, c_format.char_color);
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} else {
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/* set point of background */
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lcd_point_set(x - i, y + j, c_format.bk_color);
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}
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}
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}else{
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for (j = 0; j < 8; j++) {
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if (((temp_char >> (7 - j)) & 0x01) == 0x01) {
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/* set point of char */
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lcd_point_set(x + j, y + i, c_format.char_color);
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|
} else {
|
|
/* set point of background */
|
|
lcd_point_set(x + j, y + i, c_format.bk_color);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}else if(CHAR_FONT_16_24 == c_format.font){ /* 16x24 ASCII */
|
|
for (i = 0; i < 24; i++) {
|
|
temp_char_16 = ASCII_Table_16x24[((c - 0x20) * 24) + i];
|
|
if(CHAR_DIRECTION_HORIZONTAL == c_format.direction){
|
|
for (j = 0; j < 16; j++) {
|
|
if (((temp_char_16 >> j) & 0x01) == 0x01) {
|
|
/* set point of char */
|
|
lcd_point_set(x - i, y + j, c_format.char_color);
|
|
} else {
|
|
/* set point of background */
|
|
lcd_point_set(x - i, y + j, c_format.bk_color);
|
|
}
|
|
}
|
|
}else{
|
|
for (j = 0; j < 16; j++) {
|
|
if (((temp_char_16 >> j) & 0x01) == 0x01) {
|
|
/* set point of char */
|
|
lcd_point_set(x + j, y + i, c_format.char_color);
|
|
} else {
|
|
/* set point of background */
|
|
lcd_point_set(x + j, y + i, c_format.bk_color);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|