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rt-thread-official/bsp/stm3210/stm3210c_eval_lcd.c

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/*
* File : stm3210c_eval_lcd.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2009, RT-Thread Development Team
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rt-thread.org/license/LICENSE
*
* Change Logs:
* Date Author Notes
* 2009-11-01 Bernard the first version
*/
#include <rtthread.h>
#include "stm3210c_eval_lcd.h"
#include "stm32f10x.h"
#include "stm32f10x_spi.h"
#include <rtgui/rtgui.h>
#include <rtgui/driver.h>
#include <rtgui/rtgui_system.h>
#include <rtgui/rtgui_server.h>
#define START_BYTE 0x70
#define SET_INDEX 0x00
#define READ_STATUS 0x01
#define LCD_WRITE_REG 0x02
#define LCD_READ_REG 0x03
void rt_hw_lcd_update(rtgui_rect_t *rect);
rt_uint8_t * rt_hw_lcd_get_framebuffer(void);
void rt_hw_lcd_set_pixel(rtgui_color_t *c, rt_base_t x, rt_base_t y);
void rt_hw_lcd_get_pixel(rtgui_color_t *c, rt_base_t x, rt_base_t y);
void rt_hw_lcd_draw_hline(rtgui_color_t *c, rt_base_t x1, rt_base_t x2, rt_base_t y);
void rt_hw_lcd_draw_vline(rtgui_color_t *c, rt_base_t x, rt_base_t y1, rt_base_t y2);
void rt_hw_lcd_draw_raw_hline(rt_uint8_t *pixels, rt_base_t x1, rt_base_t x2, rt_base_t y);
struct rtgui_graphic_driver _rtgui_lcd_driver =
{
"lcd",
2,
320,
240,
rt_hw_lcd_update,
rt_hw_lcd_get_framebuffer,
rt_hw_lcd_set_pixel,
rt_hw_lcd_get_pixel,
rt_hw_lcd_draw_hline,
rt_hw_lcd_draw_vline,
rt_hw_lcd_draw_raw_hline
};
static void _delay_(__IO uint32_t nCount)
{
__IO uint32_t index = 0;
for(index = (100000 * nCount); index != 0; index--)
{}
}
/**
* @brief Sets or reset LCD control lines.
* @param GPIOx: where x can be B or D to select the GPIO peripheral.
* @param CtrlPins: the Control line. This parameter can be:
* @arg LCD_NCS_PIN: Chip Select pin
* @param BitVal: specifies the value to be written to the selected bit.
* This parameter can be:
* @arg Bit_RESET: to clear the port pin
* @arg Bit_SET: to set the port pin
* @retval None
*/
void LCD_CtrlLinesWrite(GPIO_TypeDef* GPIOx, uint16_t CtrlPins, BitAction BitVal)
{
/* Set or Reset the control line */
GPIO_WriteBit(GPIOx, CtrlPins, BitVal);
}
/**
* @brief Reset LCD control line(/CS) and Send Start-Byte
* @param Start_Byte: the Start-Byte to be sent
* @retval None
*/
void LCD_nCS_StartByte(uint8_t Start_Byte)
{
LCD_CtrlLinesWrite(LCD_NCS_GPIO_PORT, LCD_NCS_PIN, Bit_RESET);
SPI_I2S_SendData(LCD_SPI, Start_Byte);
while(SPI_I2S_GetFlagStatus(LCD_SPI, SPI_I2S_FLAG_BSY) != RESET)
{}
}
/**
* @brief Configures LCD control lines in Output Push-Pull mode.
* @param None
* @retval None
*/
void LCD_CtrlLinesConfig(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
/* Enable GPIO clock */
RCC_APB2PeriphClockCmd(LCD_NCS_GPIO_CLK, ENABLE);
/* Configure NCS in Output Push-Pull mode */
GPIO_InitStructure.GPIO_Pin = LCD_NCS_PIN;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(LCD_NCS_GPIO_PORT, &GPIO_InitStructure);
}
/**
* @brief Writes index to select the LCD register.
* @param LCD_Reg: address of the selected register.
* @retval None
*/
void LCD_WriteRegIndex(uint8_t LCD_Reg)
{
/* Reset LCD control line(/CS) and Send Start-Byte */
LCD_nCS_StartByte(START_BYTE | SET_INDEX);
/* Write 16-bit Reg Index (High Byte is 0) */
SPI_I2S_SendData(LCD_SPI, 0x00);
while(SPI_I2S_GetFlagStatus(LCD_SPI, SPI_I2S_FLAG_BSY) != RESET)
{}
SPI_I2S_SendData(LCD_SPI, LCD_Reg);
while(SPI_I2S_GetFlagStatus(LCD_SPI, SPI_I2S_FLAG_BSY) != RESET)
{}
LCD_CtrlLinesWrite(LCD_NCS_GPIO_PORT, LCD_NCS_PIN, Bit_SET);
}
/**
* @brief Reads the selected LCD Register.
* @param None
* @retval LCD Register Value.
*/
uint16_t LCD_ReadReg(uint8_t LCD_Reg)
{
uint16_t tmp = 0;
uint8_t i = 0;
/* LCD_SPI prescaler: 4 */
LCD_SPI->CR1 &= 0xFFC7;
LCD_SPI->CR1 |= 0x0008;
/* Write 16-bit Index (then Read Reg) */
LCD_WriteRegIndex(LCD_Reg);
/* Read 16-bit Reg */
/* Reset LCD control line(/CS) and Send Start-Byte */
LCD_nCS_StartByte(START_BYTE | LCD_READ_REG);
for(i = 0; i < 5; i++)
{
SPI_I2S_SendData(LCD_SPI, 0xFF);
while(SPI_I2S_GetFlagStatus(LCD_SPI, SPI_I2S_FLAG_BSY) != RESET)
{}
/* One byte of invalid dummy data read after the start byte */
while(SPI_I2S_GetFlagStatus(LCD_SPI, SPI_I2S_FLAG_RXNE) == RESET)
{}
SPI_I2S_ReceiveData(LCD_SPI);
}
SPI_I2S_SendData(LCD_SPI, 0xFF);
/* Read upper byte */
while(SPI_I2S_GetFlagStatus(LCD_SPI, SPI_I2S_FLAG_BSY) != RESET)
{}
/* Read lower byte */
while(SPI_I2S_GetFlagStatus(LCD_SPI, SPI_I2S_FLAG_RXNE) == RESET)
{}
tmp = SPI_I2S_ReceiveData(LCD_SPI);
SPI_I2S_SendData(LCD_SPI, 0xFF);
while(SPI_I2S_GetFlagStatus(LCD_SPI, SPI_I2S_FLAG_BSY) != RESET)
{}
/* Read lower byte */
while(SPI_I2S_GetFlagStatus(LCD_SPI, SPI_I2S_FLAG_RXNE) == RESET)
{}
tmp = ((tmp & 0xFF) << 8) | SPI_I2S_ReceiveData(LCD_SPI);
LCD_CtrlLinesWrite(LCD_NCS_GPIO_PORT, LCD_NCS_PIN, Bit_SET);
/* LCD_SPI prescaler: 2 */
LCD_SPI->CR1 &= 0xFFC7;
return tmp;
}
/**
* @brief Writes to the selected LCD register.
* @param LCD_Reg: address of the selected register.
* @param LCD_RegValue: value to write to the selected register.
* @retval None
*/
void LCD_WriteReg(uint8_t LCD_Reg, uint16_t LCD_RegValue)
{
/* Write 16-bit Index (then Write Reg) */
LCD_WriteRegIndex(LCD_Reg);
/* Write 16-bit Reg */
/* Reset LCD control line(/CS) and Send Start-Byte */
LCD_nCS_StartByte(START_BYTE | LCD_WRITE_REG);
SPI_I2S_SendData(LCD_SPI, LCD_RegValue>>8);
while(SPI_I2S_GetFlagStatus(LCD_SPI, SPI_I2S_FLAG_BSY) != RESET)
{}
SPI_I2S_SendData(LCD_SPI, (LCD_RegValue & 0xFF));
while(SPI_I2S_GetFlagStatus(LCD_SPI, SPI_I2S_FLAG_BSY) != RESET)
{}
LCD_CtrlLinesWrite(LCD_NCS_GPIO_PORT, LCD_NCS_PIN, Bit_SET);
}
/**
* @brief Writes to the LCD RAM.
* @param RGB_Code: the pixel color in RGB mode (5-6-5).
* @retval None
*/
void LCD_WriteRAM(uint16_t RGB_Code)
{
SPI_I2S_SendData(LCD_SPI, RGB_Code >> 8);
while(SPI_I2S_GetFlagStatus(LCD_SPI, SPI_I2S_FLAG_BSY) != RESET)
{}
SPI_I2S_SendData(LCD_SPI, RGB_Code & 0xFF);
while(SPI_I2S_GetFlagStatus(LCD_SPI, SPI_I2S_FLAG_BSY) != RESET)
{}
}
/**
* @brief Prepare to write to the LCD RAM.
* @param None
* @retval None
*/
void LCD_WriteRAM_Prepare(void)
{
LCD_WriteRegIndex(R34); /* Select GRAM Reg */
/* Reset LCD control line(/CS) and Send Start-Byte */
LCD_nCS_StartByte(START_BYTE | LCD_WRITE_REG);
}
/**
* @brief Writes 1 word to the LCD RAM.
* @param RGB_Code: the pixel color in RGB mode (5-6-5).
* @retval None
*/
void LCD_WriteRAMWord(uint16_t RGB_Code)
{
LCD_WriteRAM_Prepare();
LCD_WriteRAM(RGB_Code);
LCD_CtrlLinesWrite(LCD_NCS_GPIO_PORT, LCD_NCS_PIN, Bit_SET);
}
/**
* @brief Power on the LCD.
* @param None
* @retval None
*/
void LCD_PowerOn(void)
{
/* Power On sequence ---------------------------------------------------------*/
LCD_WriteReg(R16, 0x0000); /* SAP, BT[3:0], AP, DSTB, SLP, STB */
LCD_WriteReg(R17, 0x0000); /* DC1[2:0], DC0[2:0], VC[2:0] */
LCD_WriteReg(R18, 0x0000); /* VREG1OUT voltage */
LCD_WriteReg(R19, 0x0000); /* VDV[4:0] for VCOM amplitude */
_delay_(20); /* Dis-charge capacitor power voltage (200ms) */
LCD_WriteReg(R16, 0x17B0); /* SAP, BT[3:0], AP, DSTB, SLP, STB */
LCD_WriteReg(R17, 0x0137); /* DC1[2:0], DC0[2:0], VC[2:0] */
_delay_(5); /* Delay 50 ms */
LCD_WriteReg(R18, 0x0139); /* VREG1OUT voltage */
_delay_(5); /* delay 50 ms */
LCD_WriteReg(R19, 0x1d00); /* VDV[4:0] for VCOM amplitude */
LCD_WriteReg(R41, 0x0013); /* VCM[4:0] for VCOMH */
_delay_(5); /* delay 50 ms */
LCD_WriteReg(R7, 0x0173); /* 262K color and display ON */
}
/**
* @brief Enables the Display.
* @param None
* @retval None
*/
void LCD_DisplayOn(void)
{
/* Display On */
LCD_WriteReg(R7, 0x0173); /* 262K color and display ON */
}
/**
* @brief Disables the Display.
* @param None
* @retval None
*/
void LCD_DisplayOff(void)
{
/* Display Off */
LCD_WriteReg(R7, 0x0);
}
/**
* @brief Configures the LCD_SPI interface.
* @param None
* @retval None
*/
void LCD_SPIConfig(void)
{
SPI_InitTypeDef SPI_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
/* Enable GPIO clock */
RCC_APB2PeriphClockCmd(LCD_SPI_GPIO_CLK | RCC_APB2Periph_AFIO, ENABLE);
GPIO_PinRemapConfig(GPIO_Remap_SPI3, ENABLE);
/* Enable SPI clock */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI3, ENABLE);
/* Configure SPI pins: SCK, MISO and MOSI */
GPIO_InitStructure.GPIO_Pin = LCD_SPI_SCK_PIN | LCD_SPI_MISO_PIN | LCD_SPI_MOSI_PIN;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(LCD_SPI_GPIO_PORT, &GPIO_InitStructure);
SPI_I2S_DeInit(LCD_SPI);
/* SPI Config */
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_High;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_2;
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_Init(LCD_SPI, &SPI_InitStructure);
/* SPI enable */
SPI_Cmd(LCD_SPI, ENABLE);
}
/**
* @brief Setups the LCD.
* @param None
* @retval None
*/
void LCD_Setup(void)
{
/* Configure the LCD Control pins --------------------------------------------*/
LCD_CtrlLinesConfig();
/* Configure the LCD_SPI interface ----------------------------------------------*/
LCD_SPIConfig();
_delay_(5); /* Delay 50 ms */
/* Start Initial Sequence ------------------------------------------------*/
LCD_WriteReg(R229, 0x8000); /* Set the internal vcore voltage */
LCD_WriteReg(R0, 0x0001); /* Start internal OSC. */
LCD_WriteReg(R1, 0x0100); /* set SS and SM bit */
LCD_WriteReg(R2, 0x0700); /* set 1 line inversion */
LCD_WriteReg(R3, 0x1030); /* set GRAM write direction and BGR=1. */
LCD_WriteReg(R4, 0x0000); /* Resize register */
LCD_WriteReg(R8, 0x0202); /* set the back porch and front porch */
LCD_WriteReg(R9, 0x0000); /* set non-display area refresh cycle ISC[3:0] */
LCD_WriteReg(R10, 0x0000); /* FMARK function */
LCD_WriteReg(R12, 0x0000); /* RGB interface setting */
LCD_WriteReg(R13, 0x0000); /* Frame marker Position */
LCD_WriteReg(R15, 0x0000); /* RGB interface polarity */
/* Power On sequence -----------------------------------------------------*/
LCD_WriteReg(R16, 0x0000); /* SAP, BT[3:0], AP, DSTB, SLP, STB */
LCD_WriteReg(R17, 0x0000); /* DC1[2:0], DC0[2:0], VC[2:0] */
LCD_WriteReg(R18, 0x0000); /* VREG1OUT voltage */
LCD_WriteReg(R19, 0x0000); /* VDV[4:0] for VCOM amplitude */
_delay_(20); /* Dis-charge capacitor power voltage (200ms) */
LCD_WriteReg(R16, 0x17B0); /* SAP, BT[3:0], AP, DSTB, SLP, STB */
LCD_WriteReg(R17, 0x0137); /* DC1[2:0], DC0[2:0], VC[2:0] */
_delay_(5); /* Delay 50 ms */
LCD_WriteReg(R18, 0x0139); /* VREG1OUT voltage */
_delay_(5); /* Delay 50 ms */
LCD_WriteReg(R19, 0x1d00); /* VDV[4:0] for VCOM amplitude */
LCD_WriteReg(R41, 0x0013); /* VCM[4:0] for VCOMH */
_delay_(5); /* Delay 50 ms */
LCD_WriteReg(R32, 0x0000); /* GRAM horizontal Address */
LCD_WriteReg(R33, 0x0000); /* GRAM Vertical Address */
/* Adjust the Gamma Curve ------------------------------------------------*/
LCD_WriteReg(R48, 0x0006);
LCD_WriteReg(R49, 0x0101);
LCD_WriteReg(R50, 0x0003);
LCD_WriteReg(R53, 0x0106);
LCD_WriteReg(R54, 0x0b02);
LCD_WriteReg(R55, 0x0302);
LCD_WriteReg(R56, 0x0707);
LCD_WriteReg(R57, 0x0007);
LCD_WriteReg(R60, 0x0600);
LCD_WriteReg(R61, 0x020b);
/* Set GRAM area ---------------------------------------------------------*/
LCD_WriteReg(R80, 0x0000); /* Horizontal GRAM Start Address */
LCD_WriteReg(R81, 0x00EF); /* Horizontal GRAM End Address */
LCD_WriteReg(R82, 0x0000); /* Vertical GRAM Start Address */
LCD_WriteReg(R83, 0x013F); /* Vertical GRAM End Address */
LCD_WriteReg(R96, 0xa700); /* Gate Scan Line */
LCD_WriteReg(R97, 0x0001); /* NDL,VLE, REV */
LCD_WriteReg(R106, 0x0000); /* set scrolling line */
/* Partial Display Control -----------------------------------------------*/
LCD_WriteReg(R128, 0x0000);
LCD_WriteReg(R129, 0x0000);
LCD_WriteReg(R130, 0x0000);
LCD_WriteReg(R131, 0x0000);
LCD_WriteReg(R132, 0x0000);
LCD_WriteReg(R133, 0x0000);
/* Panel Control ---------------------------------------------------------*/
LCD_WriteReg(R144, 0x0010);
LCD_WriteReg(R146, 0x0000);
LCD_WriteReg(R147, 0x0003);
LCD_WriteReg(R149, 0x0110);
LCD_WriteReg(R151, 0x0000);
LCD_WriteReg(R152, 0x0000);
/* Set GRAM write direction and BGR = 1 */
/* I/D=01 (Horizontal : increment, Vertical : decrement) */
/* AM=1 (address is updated in vertical writing direction) */
LCD_WriteReg(R3, 0x1018);
LCD_WriteReg(R7, 0x0173); /* 262K color and display ON */
}
/**
* @brief Sets the cursor position.
* @param Xpos: specifies the X position.
* @param Ypos: specifies the Y position.
* @retval None
*/
void LCD_SetCursor(uint8_t Xpos, uint16_t Ypos)
{
LCD_WriteReg(R32, Xpos);
LCD_WriteReg(R33, Ypos);
}
void rt_hw_lcd_update(rtgui_rect_t *rect)
{
/* nothing for none-DMA mode driver */
}
rt_uint8_t * rt_hw_lcd_get_framebuffer(void)
{
return RT_NULL; /* no framebuffer driver */
}
void rt_hw_lcd_set_pixel(rtgui_color_t *c, rt_base_t x, rt_base_t y)
{
unsigned short p;
/* get color pixel */
p = rtgui_color_to_565p(*c);
/* set x and y */
LCD_SetCursor(y, 319 - x);
LCD_WriteRAMWord(p);
}
void rt_hw_lcd_get_pixel(rtgui_color_t *c, rt_base_t x, rt_base_t y)
{
// unsigned short p;
/* set x and y */
LCD_SetCursor(y, 319 - x);
*c = rtgui_color_from_565p(0xffff);
}
void rt_hw_lcd_draw_hline(rtgui_color_t *c, rt_base_t x1, rt_base_t x2, rt_base_t y)
{
unsigned short p;
/* get color pixel */
p = rtgui_color_to_565p(*c);
LCD_SetCursor(y, 319 - x1);
LCD_WriteRAM_Prepare(); /* Prepare to write GRAM */
while (x1 < x2)
{
LCD_WriteRAM(p);
x1 ++;
}
LCD_CtrlLinesWrite(LCD_NCS_GPIO_PORT, LCD_NCS_PIN, Bit_SET);
}
void rt_hw_lcd_draw_vline(rtgui_color_t *c, rt_base_t x, rt_base_t y1, rt_base_t y2)
{
unsigned short p;
/* get color pixel */
p = rtgui_color_to_565p(*c);
LCD_SetCursor(y1, 319 - x);
while (y1 < y2)
{
LCD_WriteRAMWord(p);
y1++;
LCD_SetCursor(y1, 319 - x);
}
}
void rt_hw_lcd_draw_raw_hline(rt_uint8_t *pixels, rt_base_t x1, rt_base_t x2, rt_base_t y)
{
rt_uint16_t *ptr;
/* get pixel */
ptr = (rt_uint16_t*) pixels;
LCD_SetCursor(y, 319 - x1);
LCD_WriteRAM_Prepare(); /* Prepare to write GRAM */
while (x1 < x2)
{
LCD_WriteRAM(*ptr);
x1 ++; ptr ++;
}
LCD_CtrlLinesWrite(LCD_NCS_GPIO_PORT, LCD_NCS_PIN, Bit_SET);
}
rt_err_t rt_hw_lcd_init(void)
{
LCD_Setup();
/* add lcd driver into graphic driver */
rtgui_graphic_driver_add(&_rtgui_lcd_driver);
return RT_EOK;
}
void stm3210c_rtgui_init()
{
rtgui_rect_t rect;
rtgui_system_server_init();
/* register dock panel */
rect.x1 = 0;
rect.y1 = 0;
rect.x2 = 320;
rect.y2 = 25;
rtgui_panel_register("info", &rect);
/* register main panel */
rect.x1 = 0;
rect.y1 = 25;
rect.x2 = 320;
rect.y2 = 240;
rtgui_panel_register("main", &rect);
rtgui_panel_set_default_focused("main");
rt_hw_lcd_init();
info_init();
today_init();
}
#include <finsh.h>
void hline(rt_base_t x1, rt_base_t x2, rt_base_t y, rt_uint32_t pixel)
{
rt_hw_lcd_draw_hline(&pixel, x1, x2, y);
}
FINSH_FUNCTION_EXPORT(hline, draw a hline);
void vline(int x, int y1, int y2, rt_uint32_t pixel)
{
rt_hw_lcd_draw_vline(&pixel, x, y1, y2);
}
FINSH_FUNCTION_EXPORT(vline, draw a vline);
void cls(rt_uint32_t c)
{
rt_size_t index;
for(index = 0; index < 240; index ++)
rt_hw_lcd_draw_hline(&c, 0, 320, index);
}
FINSH_FUNCTION_EXPORT(cls, clear screen);
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