Mercurial > ~darius > hgwebdir.cgi > stm32temp

diff lcd.c @ 7:9404b9869c27

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Make the LCD panel work (timings, GPIOE clock needs to be on, etc) Factor out LCD init (needs more work)
author Daniel O'Connor <darius@dons.net.au>
date Sun, 22 Jan 2012 17:10:51 +1030
parents efa2c22266e3
children 58d76cf522ff
line wrap: on
line diff
--- a/lcd.c	Sat Jan 14 11:42:24 2012 +1030
+++ b/lcd.c	Sun Jan 22 17:10:51 2012 +1030
@@ -3,13 +3,13 @@
  * ~/projects/STM32Strive/奋斗STM32开发板例程/奋斗STM32开发板例程/奋斗STM32开发板MINI/STM32奋斗版ucOS II V2.86 uCGUI 3.9 DEMO-V2/STM32奋斗版ucOS II V2.86 uCGUI 3.9 DEMO
  *
  * Schematics
- * Main board ~/Downloads/Strive\ Mini\ STM32\ Schematic.pdf 
- * LCD board ~/Downloads/Strive Mini LCD STM32 Schematic.pdf
- * MCU reference manual
- * ~/Downloads/CD00171190.pdf
- * MCU Data sheet (pinout)
- * ~/Downloads/CD00191185.pdf
- * LCD data sheet
+ * Main board docs/Strive\ Mini\ STM32\ Schematic.pdf 
+ * LCD board docs/Strive Mini LCD STM32 Schematic.pdf
+ * MCU reference manual docs/CD00171190.pdf
+ * MCU Data sheet (pinout) docs/CD00191185.pdf
+ * LCD controller data sheet docs/ili9325-v0.35.pdf
+ * LCD controller app notes docs/ILI9325AN_V0.22.pdf
+ * XXX: not sure what panel is connected
  * 
  */
 /*	LCD board	MCU
@@ -44,7 +44,7 @@
   29	D1		PD15/FSMC_D1
   30	D9		PE12/FSMC_D9
   31	D0		PD14/FSMC_D0
-  32	D14		PD9/FSMC_D9
+  32	D14		PD9/FSMC_D14
   33	NC		
   34	D8		PE11/FSMC_D8
   35	NC		
@@ -59,6 +59,8 @@
 #include "stm32f10x.h"
 #include "lcd.h"
 
+static void	LCD_Doinit(void);
+
 #define Bank1_LCD_C	((uint32_t)0x60000000)    /* Register Address */
 #define Bank1_LCD_D	((uint32_t)0x60020000)    /* Data Address */
 
@@ -85,15 +87,25 @@
 }
 
 void
+LCD_WR_StartData(uint16_t x, uint16_t y) {
+    LCD_WR_Reg(0x20, x);
+    LCD_WR_Reg(0x21, y);
+    *(__IO uint16_t *)(Bank1_LCD_C) = 0x22;	/* Start GRAM write */
+}
+
+void
 LCD_WR_Data(uint16_t val) {
     *(__IO uint16_t *)(Bank1_LCD_D) = val;
 }
 
-/* Callers imply this is in milliseconds but that seems unlikely */
+/* This is a bit rough and ready */
 void
 Delay(__IO uint32_t nCount) {
+    __IO uint32_t i;
+    
     for(; nCount != 0; nCount--)
-	;
+	for (i = 0; i < 3900; i++)
+	    ;
 }
 
 uint8_t
@@ -221,16 +233,18 @@
     FSMC_NORSRAMInitTypeDef		FSMC_NORSRAMInitStructure;
     FSMC_NORSRAMTimingInitTypeDef	p;
     TIM_TimeBaseInitTypeDef		TIM_TimeBaseStructure;
-    uint16_t				id;
     
     /* Enable FSMC clock */
     RCC_AHBPeriphClockCmd(RCC_AHBPeriph_FSMC, ENABLE);
 
+    /* Enable alternate function IO clock */
+    RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
+
     /* Enable GPIOD clock */
     RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD, ENABLE);
 
-    /* Enable alternate function IO clock */
-    RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
+    /* Enable GPIOD clock */
+    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOE, ENABLE);
 
     /* Configures LCD Control lines (FSMC Pins) in alternate function Push-Pull mode.
      *
@@ -238,7 +252,8 @@
      * PD10(D15), PD11(A16/RS) PD14(D0), PD15(D1)
      */
     GPIO_InitStructure.GPIO_Pin = (GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_4 | GPIO_Pin_5 | GPIO_Pin_7 |
-				   GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_11 | GPIO_Pin_14 | GPIO_Pin_15);
+				   GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_11 | 
+				   GPIO_Pin_14 | GPIO_Pin_15);
     GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
     GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
     GPIO_Init(GPIOD, &GPIO_InitStructure);
@@ -246,8 +261,9 @@
     /* PE7(D4), PE8(D5), PE9(D6), PE10(D7), PE11(D8), PE12(D9), PE13(D10),
      * PE14(D11), PE15(D12)
      */
-    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7 | GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | 
-    GPIO_Pin_11 | GPIO_Pin_12 | GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15;
+    GPIO_InitStructure.GPIO_Pin = (GPIO_Pin_7 | GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | 
+				   GPIO_Pin_11 | GPIO_Pin_12 | GPIO_Pin_13 | GPIO_Pin_14 |
+				   GPIO_Pin_15);
     GPIO_Init(GPIOE, &GPIO_InitStructure);
 
     /* Configure backlight control (PD13/FSMC_A18 remapped to TIM4_CH2) */
@@ -291,23 +307,23 @@
     GPIO_Init(GPIOE, &GPIO_InitStructure);
 
     /* Configures the Parallel interface (FSMC) for LCD (Parallel mode) */
-    /* FSMC_Bank1_NORSRAM4 timing configuration */
-    p.FSMC_AddressSetupTime = 1;
-    p.FSMC_AddressHoldTime = 0;
-    p.FSMC_DataSetupTime = 2;
+    /* Timing configuration */
+    p.FSMC_AddressSetupTime = 5;
+    p.FSMC_AddressHoldTime = 5;
+    p.FSMC_DataSetupTime = 5;
     p.FSMC_BusTurnAroundDuration = 0;
     p.FSMC_CLKDivision = 0;
     p.FSMC_DataLatency = 0;
     p.FSMC_AccessMode = FSMC_AccessMode_A;
 
-    /* FSMC_Bank1_NORSRAM4 configured as follows:
+    /* FSMC_Bank1_NORSRAM1 configured as follows:
        - Data/Address MUX = Disable
        - Memory Type = SRAM
        - Data Width = 16bit
        - Write Operation = Enable
        - Extended Mode = Disable
        - Asynchronous Wait = Disable */
-    FSMC_NORSRAMInitStructure.FSMC_Bank = FSMC_Bank1_NORSRAM4;
+    FSMC_NORSRAMInitStructure.FSMC_Bank = FSMC_Bank1_NORSRAM1;
     FSMC_NORSRAMInitStructure.FSMC_DataAddressMux = FSMC_DataAddressMux_Disable;
     FSMC_NORSRAMInitStructure.FSMC_MemoryType = FSMC_MemoryType_SRAM;
     FSMC_NORSRAMInitStructure.FSMC_MemoryDataWidth = FSMC_MemoryDataWidth_16b;
@@ -322,105 +338,10 @@
     FSMC_NORSRAMInitStructure.FSMC_WriteBurst = FSMC_WriteBurst_Disable;
     FSMC_NORSRAMInitStructure.FSMC_ReadWriteTimingStruct = &p;
     FSMC_NORSRAMInitStructure.FSMC_WriteTimingStruct = &p;
-
     FSMC_NORSRAMInit(&FSMC_NORSRAMInitStructure);  
 
-    /* Enable FSMC_Bank1_NORSRAM4 */
-    FSMC_NORSRAMCmd(FSMC_Bank1_NORSRAM4, ENABLE);
-
-    /* Initialise LCD panel */
-
-    /* Pull reset pin low */
-    GPIO_ResetBits(GPIOE, GPIO_Pin_1);
-    Delay(0xafff);					   
-    GPIO_SetBits(GPIOE, GPIO_Pin_1);
-    Delay(0xafff);	
-
-    id = LCD_RD_Reg(0x00);
-    if (id != 0x9325) {
-	printf("LCD ID doesn't match, expected 0x9325 got 0x%x\r\n", id);
-	return;
-    }
-    
-    LCD_WR_Reg(0x00e3, 0x3008); /* Set internal timing */
-    LCD_WR_Reg(0x00e7, 0x0012); /* Set internal timing */
-    LCD_WR_Reg(0x00ef, 0x1231); /* Set internal timing */
-    LCD_WR_Reg(0x0000, 0x0001); /* Start Oscillation */
-    LCD_WR_Reg(0x0001, 0x0100); /* set SS and SM bit */
-    LCD_WR_Reg(0x0002, 0x0700); /* set 1 line inversion */
-
-    LCD_WR_Reg(0x0003, 0x1030); /* set GRAM write direction and BGR = 0, 262K colours, 1 transfers/pixel. */
-    LCD_WR_Reg(0x0004, 0x0000); /* Resize register */
-    LCD_WR_Reg(0x0008, 0x0202); /* set the back porch and front porch */
-    LCD_WR_Reg(0x0009, 0x0000); /* set non-display area refresh cycle ISC[3:0] */
-    LCD_WR_Reg(0x000a, 0x0000); /* FMARK function */
-    LCD_WR_Reg(0x000c, 0x0000); /* RGB interface setting */
-    LCD_WR_Reg(0x000d, 0x0000); /* Frame marker Position */
-    LCD_WR_Reg(0x000f, 0x0000); /* RGB interface polarity */
-
-    /* Power On sequence  */
-    LCD_WR_Reg(0x0010, 0x0000); /* SAP, BT[3:0], AP, DSTB, SLP, STB */
-    LCD_WR_Reg(0x0011, 0x0007); /* DC1[2:0], DC0[2:0], VC[2:0] */
-    LCD_WR_Reg(0x0012, 0x0000); /* VREG1OUT voltage */
-    LCD_WR_Reg(0x0013, 0x0000); /* VDV[4:0] for VCOM amplitude */
-    Delay(200);			/* Dis-charge capacitor power voltage */
-    LCD_WR_Reg(0x0010, 0x1690); /* SAP, BT[3:0], AP, DSTB, SLP, STB */
-    LCD_WR_Reg(0x0011, 0x0227); /* R11h = 0x0221 at VCI = 3.3V, DC1[2:0], DC0[2:0], VC[2:0] */
-    Delay(50); 			/* Delay 50ms */
-    LCD_WR_Reg(0x0012, 0x001c); /* External reference voltage= Vci; */
-    Delay(50); 			/* Delay 50ms */
-    LCD_WR_Reg(0x0013, 0x1800); /* R13 = 1200 when R12 = 009D; VDV[4:0] for VCOM amplitude */
-    LCD_WR_Reg(0x0029, 0x001c); /* R29 = 000C when R12 = 009D; VCM[5:0] for VCOMH */
-    LCD_WR_Reg(0x002b, 0x000d); /* Frame Rate = 91Hz */
-    Delay(50); 			/* Delay 50ms */
-    LCD_WR_Reg(0x0020, 0x0000); /* GRAM horizontal Address */
-    LCD_WR_Reg(0x0021, 0x0000); /* GRAM Vertical Address */
-
-    /* Adjust the Gamma Curve */
-    LCD_WR_Reg(0x0030, 0x0007);
-    LCD_WR_Reg(0x0031, 0x0302);
-    LCD_WR_Reg(0x0032, 0x0105);
-    LCD_WR_Reg(0x0035, 0x0206);
-    LCD_WR_Reg(0x0036, 0x0808);
-    LCD_WR_Reg(0x0037, 0x0206);
-    LCD_WR_Reg(0x0038, 0x0504);
-    LCD_WR_Reg(0x0039, 0x0007);
-    LCD_WR_Reg(0x003c, 0x0105);
-    LCD_WR_Reg(0x003d, 0x0808);
-
-    /* Set GRAM area */
-    LCD_WR_Reg(0x0050, 0x0000); /* Horizontal GRAM Start Address */
-    LCD_WR_Reg(0x0051, 0x00ef); /* Horizontal GRAM End Address */
-    LCD_WR_Reg(0x0052, 0x0000); /* Vertical GRAM Start Address */
-    LCD_WR_Reg(0x0053, 0x013f); /* Vertical GRAM Start Address */
-    LCD_WR_Reg(0x0060, 0xa700); /* Gate Scan Line */
-    LCD_WR_Reg(0x0061, 0x0001); /* NDL,VLE, REV */
-    LCD_WR_Reg(0x006a, 0x0000); /* set scrolling line */
-
-    /* Partial Display Control */
-    LCD_WR_Reg(0x0080, 0x0000);
-    LCD_WR_Reg(0x0081, 0x0000);
-    LCD_WR_Reg(0x0082, 0x0000);
-    LCD_WR_Reg(0x0083, 0x0000);
-    LCD_WR_Reg(0x0084, 0x0000);
-    LCD_WR_Reg(0x0085, 0x0000);
-
-    /* Panel Control */
-    LCD_WR_Reg(0x0090, 0x0010);
-    LCD_WR_Reg(0x0092, 0x0000);
-    LCD_WR_Reg(0x0093, 0x0003);
-    LCD_WR_Reg(0x0095, 0x0110);
-    LCD_WR_Reg(0x0097, 0x0000);
-    LCD_WR_Reg(0x0098, 0x0000);
-    LCD_WR_Reg(0x0007, 0x0133); /* 262K colour and display ON */
-  	
-    /* Fill panel with white */
-    LCD_WR_Reg(0x20, 0);
-    LCD_WR_Reg(0x21, 0x013f);
-    *(__IO uint16_t *)(Bank1_LCD_C) = 34;
-    for (uint32_t i = 0; i < 320 * 240; i++) {
-	LCD_WR_Data(0xffff);
-    }
+    /* Enable FSMC_Bank1_NORSRAM1 */
+    FSMC_NORSRAMCmd(FSMC_Bank1_NORSRAM1, ENABLE);
 
     /* Configure touch screen controller
      *
@@ -470,6 +391,7 @@
     /* SPI1 enable */
     SPI_Cmd(SPI1, ENABLE);  
 
+    LCD_Doinit();
 }
 
 void
@@ -485,3 +407,128 @@
     TIM_OC2Init(TIM4, &TIM_OCInitStructure);
 
 }
+
+static void
+LCD_Doinit(void) {
+    uint16_t				id;
+
+    /* Initialise LCD panel */
+
+    /* Pull reset pin low */
+    Delay(1);
+    GPIO_ResetBits(GPIOE, GPIO_Pin_1);
+    Delay(10);
+    GPIO_SetBits(GPIOE, GPIO_Pin_1);
+    Delay(50);
+
+    id = LCD_RD_Reg(0x00);
+    if (id != 0x9325) {
+	printf("LCD ID doesn't match, expected 0x9325 got 0x%x\r\n", id);
+	return;
+    }
+    printf("LCD ID matches\r\n");
+    
+    LCD_WR_Reg(0x00e3, 0x3008); /* Set internal timing (not documented) */
+    LCD_WR_Reg(0x00e7, 0x0012); /* Set internal timing (not documented) */
+    LCD_WR_Reg(0x00ef, 0x1231); /* Set internal timing (not documented) */
+    LCD_WR_Reg(0x0000, 0x0001); /* Start Oscillation */
+    Delay(50);
+    LCD_WR_Reg(0x0001, 0x0100); /* set SS (S720 -> S1) */
+    LCD_WR_Reg(0x0002, 0x0700); /* set line inversion (B/C + EOR) */
+    LCD_WR_Reg(0x0004, 0x0000); /* no resizing */
+    LCD_WR_Reg(0x0008, 0x0202); /* set the back porch and front porch (2 lines each) */
+    LCD_WR_Reg(0x0009, 0x0000); /* set non-display area refresh cycle ISC[3:0] */
+    LCD_WR_Reg(0x000a, 0x0000); /* FMARK function */
+
+    LCD_WR_Reg(0x000c, 0x0000); /* RGB ctl - Internal clock, 18bit interface */
+    LCD_WR_Reg(0x000d, 0x0000); /* Frame marker Position */
+    LCD_WR_Reg(0x000f, 0x0000); /* RGB interface polarity */
+
+    /* Power On sequence  */
+    LCD_WR_Reg(0x0010, 0x0000); /* SAP, BT[3:0], AP, DSTB, SLP, STB */
+    LCD_WR_Reg(0x0011, 0x0007); /* DC1[2:0], DC0[2:0], VC[2:0] */
+    LCD_WR_Reg(0x0012, 0x0000); /* VREG1OUT voltage */
+    LCD_WR_Reg(0x0013, 0x0000); /* VDV[4:0] for VCOM amplitude */
+    Delay(200);                 /* Dis-charge capacitor power voltage */
+    LCD_WR_Reg(0x0010, 0x1690); /* SAP, BT[3:0], AP, DSTB, SLP, STB */
+    LCD_WR_Reg(0x0011, 0x0227); /* R11h = 0x0221 at VCI = 3.3V, DC1[2:0], DC0[2:0], VC[2:0] */
+    Delay(50);                  /* Delay 50ms */
+    LCD_WR_Reg(0x0012, 0x001c); /* External reference voltage= Vci; */
+    Delay(50);                  /* Delay 50ms */
+    LCD_WR_Reg(0x0013, 0x1800); /* R13 = 1200 when R12 = 009D; VDV[4:0] for VCOM amplitude */
+    LCD_WR_Reg(0x0029, 0x001c); /* R29 = 000C when R12 = 009D; VCM[5:0] for VCOMH */
+    LCD_WR_Reg(0x002b, 0x000d); /* Frame Rate = 91Hz */
+    Delay(50);                  /* Delay 50ms */
+
+    /* Set GRAM area */
+    LCD_WR_Reg(0x0050, 0x0000); /* Horizontal GRAM Start Address */
+    LCD_WR_Reg(0x0051, 0x00ef); /* Horizontal GRAM End Address */
+    LCD_WR_Reg(0x0052, 0x0000); /* Vertical GRAM Start Address */
+    LCD_WR_Reg(0x0053, 0x013f); /* Vertical GRAM Start Address */
+
+    LCD_WR_Reg(0x0060, 0xa700); /* Gate Scan Line, drive G320 -> G1 */
+    LCD_WR_Reg(0x0061, 0x0003); /* VLE & REV */
+    LCD_WR_Reg(0x006a, 0x0000); /* set scrolling line */
+
+    /* Partial Display Control */
+    LCD_WR_Reg(0x0080, 0x0000); /* Image 1 */
+    LCD_WR_Reg(0x0081, 0x0000);
+    LCD_WR_Reg(0x0082, 0x0000);
+    LCD_WR_Reg(0x0083, 0x0000); /* Image 2 */
+    LCD_WR_Reg(0x0084, 0x0000);
+    LCD_WR_Reg(0x0085, 0x0000);
+
+    /* Panel Control */
+    LCD_WR_Reg(0x0090, 0x0010);
+    LCD_WR_Reg(0x0092, 0x0000);
+    LCD_WR_Reg(0x0093, 0x0003);
+    LCD_WR_Reg(0x0095, 0x0110);
+    LCD_WR_Reg(0x0097, 0x0000); /* Undocumented */
+    LCD_WR_Reg(0x0098, 0x0000); /* Undocumented */
+
+    LCD_WR_Reg(0x0007, 0x0133); /* Display on, 262k colour mode (vs 8) */
+
+    LCD_WR_Reg(0x0003, 0x1030); /* set GRAM write direction and enable BGR, 64K colours, 1 transfers/pixel. */
+
+    /* Adjust the Gamma Curve */
+    LCD_WR_Reg(0x0030, 0x0006);
+    LCD_WR_Reg(0x0031, 0x0101);
+    LCD_WR_Reg(0x0032, 0x0003);
+    LCD_WR_Reg(0x0035, 0x0106);
+    LCD_WR_Reg(0x0036, 0x0b02);
+    LCD_WR_Reg(0x0037, 0x0302);
+    LCD_WR_Reg(0x0038, 0x0707);
+    LCD_WR_Reg(0x0039, 0x0007);
+    LCD_WR_Reg(0x003c, 0x0600);
+    LCD_WR_Reg(0x003d, 0x020b);
+
+    fputs("Testing\r\n", stdout);
+    LCD_WR_StartData(0, 0);
+    LCD_WR_Data(0xa5a5);
+    LCD_WR_Data(0x5a5a);
+    LCD_WR_StartData(0, 0);
+    if ((id = LCD_RD_Data(1)) != 0xa5a5)
+	printf("Expected 0xa5a5 got 0x%04x\r\n", id);
+    
+    if ((id = LCD_RD_Data(0)) != 0x5a5a)
+	printf("Expected 0x5a5a got 0x%04x\r\n", id);
+
+    fputs("Filling\r\n", stdout);
+    /* Fill panel */
+    LCD_WR_StartData(0, 0);
+
+#define RGB24_565(R, G, B) (((((R) >> 3) & 0x1f) << 11) | ((((G) >> 2) & 0x3f) << 5) | (((B) >> 3) & 0x1f))
+
+    for (int x = 0; x < 320; x++) {
+	for (int y = 0; y < 240; y++) {
+	    if (((x / 5) % 3) == 0)
+		LCD_WR_Data(RGB24_565(255, 0, 0));
+	    else if (((x / 5) % 3) == 1)
+		LCD_WR_Data(RGB24_565(0, 255, 0));
+	    else
+		LCD_WR_Data(RGB24_565(0, 0, 255));
+	}
+    }
+
+}
+