added LCD skeleton (broken)

.vscode/settings.json

@@ -22,6 +22,7 @@
         "stm32f730xx.h": "c",
         "keyboard.h": "c",
         "gpio_helper.h": "c",
-        "stdint.h": "c"
+        "stdint.h": "c",
+        "clock.h": "c"
     }
 }

Makefile

@@ -47,6 +47,7 @@ CFLAGS += -g
 CFLAGS += -fmessage-length=0
 # (Set system to ignore semihosted junk)
 CFLAGS += --specs=nosys.specs
+CFLAGS += -O0
 
 # Linker directives.
 LSCRIPT = $(LD_SCRIPT)

src/Laplace/clock.c

@@ -1,4 +1,5 @@
 #include "clock.h"
+#include "../device/stm32f730xx.h"
 
 /* This should set the speed to 216MHz intead of just 48MHz */
 void init_clock(){
@@ -78,7 +79,7 @@ void init_clock(){
 
     // Set normal speed
     RCC->CFGR &= ~(RCC_CFGR_HPRE_Msk);
-
+    /*
     // UNSAFE CODE
     // 23999<=>0b0101 1101 1011 1111
     SysTick->LOAD &= ~(0b00000000111111111111111111111111);
@@ -87,7 +88,9 @@ void init_clock(){
     SysTick->VAL &= ~(0b00000000111111111111111111111111);
     //set some things in CSR
     SysTick->CTRL &= ~(0b00000000000000000000000000000111);
-    SysTick->CTRL |= 0b00000000000000000000000000000011;
+    SysTick->CTRL |= 0b00000000000000000000000000000011;*/
+
+    set_led_green(true);
 }
 
 /* OLD

src/Laplace/clock.h

@@ -7,8 +7,8 @@
 #ifndef CLOCK_H
 #define CLOCK_H
 
-#include "stdint.h"
 #include "../device/stm32f730xx.h"
+#include "stdint.h"
 #include "led.h"
 
 /*

src/Laplace/keyboard.h

@@ -8,6 +8,7 @@
 #define KEYBOARD_H
 
 #include "gpio_helper.h"
+#include "time.h"
 
 struct button{
 	uint8_t column; // ie: 2

src/Laplace/laplace.c

@@ -2,6 +2,7 @@
 
 /* Initialize all needed peripherals, should be called early in your program */
 void laplace_init(){
+    init_clock();
     /* led init */
     enable_gpio_x_rcc(GPIO_B);
     led_init();
@@ -10,5 +11,5 @@ void laplace_init(){
     enable_gpio_x_rcc(GPIO_C); //column (in)
     enable_gpio_x_rcc(GPIO_A); //row (out)
     keyboard_init();
-    init_clock();
+    lcd_init();
 }

src/Laplace/laplace.h

@@ -11,6 +11,7 @@
 #include "led.h"
 #include "keyboard.h"
 #include "clock.h"
+#include "lcd.h"
 
 /* Initialize all needed peripherals, should be called early in your program */
 void laplace_init();

src/Laplace/lcd.c

@@ -0,0 +1,55 @@
+#include "lcd.h"
+
+/* This should be called before accessing any other led related feature
+   as it sets up all led related peripherals */
+void lcd_init(){
+    int _var = 1336+1;
+    //init_DMA();
+    draw_screen();
+}
+
+void draw_screen(){
+
+}
+
+// send command to the LCD
+void send_command(uint16_t command){
+    *COMMAND_ADDRESS = command;
+}
+
+// send data to the LCD, should be called after sending the command
+void send_data(uint16_t data){
+    *DATA_ADDRESS = data;
+}
+
+// we assume orientations is portrait
+void set_drawing_area(r/*TODO*/){
+    send_command(MEMORY_ACCESS_CONTROL);
+    send_data(0x00);
+
+    send_command(COLUMN_ADDRESS_SET);
+    send_data();
+
+    send_command(PAGE_ADDRESS_SET);
+    send_data();
+}
+
+void start_DMA_upload(){
+
+}
+
+/*void init_DMA(){
+    // clear specified bits
+    DMA2_Stream0->CR &= ~(0b00000001111000000111110011000001);
+    // set them to the correct value*/
+    /* DIR = 2 = 0b10
+     * MSIZE = 1 = 0b1
+     * PSIZE = 1 = 0b1
+     * MBURST = 1 = 0b1
+     * PBURST =  1 = 0b1
+     * MINC = false = 0b0 */
+    /*DMA2_Stream0->CR |= 0b00000000101000000010100010000000;
+    // DataAddress is 0x60020000 = 0b0110 0000 0000 0010 0000 0000 0000 0000
+    DMA2_Stream0->M0AR &= ~(0b11111111111111111111111111111111);
+    DMA2_Stream0->M0AR |= 0b01100000000000100000000000000000;
+}*/

src/Laplace/lcd.h

@@ -0,0 +1,40 @@
+/** @file lcd.h
+ * 
+ * @brief Control the lcd
+ *
+ */ 
+
+#ifndef LCD_H
+#define LCD_H
+
+#include <stdint.h>
+#include "../device/stm32f730xx.h"
+
+uint16_t volatile * const COMMAND_ADDRESS = (uint16_t *) 0x60000000;
+uint16_t volatile * const DATA_ADDRESS = (uint16_t *) 0x60020000;
+// to set them use : *COMMAND_ADDRESS = 0x1234;
+
+// define the differents command
+#define NOP 0x00
+#define RESET 0x01
+#define READ_DISPLAY_ID 0x04
+#define SLEEP_IN 0x10
+#define SLEEP_OUT 0x11
+#define DISPLAY_INVERSION_OFF 0x20
+#define DISPLAY_INVERSION_ON 0x21
+#define DISPLAY_OFF 0x28
+#define DISPLAY_ON 0x29
+#define COLUMN_ADDRESS_SET 0x2A
+#define PAGE_ADDRESS_SET 0x2B
+#define MEMORY_WRITE 0x2C
+#define MEMORY_READ 0x2E
+#define TEARING_EFFECT_LINE_ON 0x35
+#define MEMORY_ACCESS_CONTROL 0x36
+#define PIXEL_FORMAT_SET 0x3A
+#define FRAME_RATE_CONTROL 0xC6
+#define POSITIVE_VOLTAGE_GAMMA_CONTROL 0xE0
+#define NEGATIVE_VOLTAGE_GAMMA_CONTROL 0xE1
+
+void lcd_init();
+
+#endif

src/main.c

@@ -34,9 +34,9 @@ void main_entry(){
         }*/
 
         set_led_blue(true);
-        ms_wait(5000);
+        ms_wait(500);
         set_led_blue(false);
-        ms_wait(5000);
+        ms_wait(500);
     }
     
 }

src/main.h

@@ -11,6 +11,7 @@
 #include "Laplace/led.h"
 #include "Laplace/keyboard.h"
 #include "Laplace/time.h"
+#include "Laplace/clock.h"
 
 /* our main function */
 void main_entry();