display backlight fun ..., display init (not working!), spi1 stuff for cc1100

diff --git a/betty/betty.c b/betty/betty.c
index f3e08ce..81b4687 100644 (file)
--- a/betty/betty.c
+++ b/betty/betty.c
@@ -17,6 +17,7 @@
 
 /* bank 0/2 and boootloader addr/size */
 #define BANK0                  0x80000000
+#define BANK1                  0x81000000
 #define BANK2                  0x82000000
 #define BANK_SIZE              0x00100000
 #define BOOTLOADER             0x7fffe000
@@ -30,6 +31,10 @@
 #define B2F2AA (*((volatile unsigned short *)(BANK2|0x554)))   // 0x2aa
 #define B2F    (*((volatile unsigned short *)(BANK2)))
 
+/* lcd command and data addresses */
+#define LCD_CMD                (*((volatile unsigned char *)(BANK1)))
+#define LCD_DATA       (*((volatile unsigned char *)(BANK1+1)))
+
 /*
  * type definitions
  */
@@ -166,6 +171,117 @@ u8 uart0_get_byte(void) {
        return rx;
 }
 
+void pause(int cnt) {
+
+       while(cnt--)
+               asm volatile ("nop");
+}
+       
+void init_lcd(u8 s) {
+
+       LCD_CMD=0xe1;   // ?
+       LCD_CMD=0xe2;
+       pause(48000);
+       LCD_CMD=0xab;
+       LCD_CMD=0x27;
+       LCD_CMD=0x81;
+       LCD_CMD=0x3f;
+       LCD_CMD=0x65;
+       LCD_CMD=0x60;
+       LCD_CMD=0x1c;
+       LCD_CMD=0x61;
+       LCD_CMD=0x0a;
+       LCD_CMD=0x62;
+       LCD_CMD=0x75;
+       LCD_CMD=0x63;
+       LCD_CMD=0x81;
+       LCD_CMD=0x90;
+       LCD_CMD=0x88;
+       LCD_CMD=0x00;
+       LCD_CMD=0x89;
+       LCD_CMD=0x00;
+       LCD_CMD=0x8a;
+       LCD_CMD=0x33;
+       LCD_CMD=0x8b;
+       LCD_CMD=0x33;
+       LCD_CMD=0x8c;
+       LCD_CMD=0x66;
+       LCD_CMD=0x8d;
+       LCD_CMD=0x66;
+       LCD_CMD=0x8e;
+       LCD_CMD=0x99;
+       LCD_CMD=0x8f;
+       LCD_CMD=0x99;
+       if(s) {
+               LCD_CMD=0xa1;
+               LCD_CMD=0xc0;
+       }
+       else {
+               LCD_CMD=0xa0;
+               LCD_CMD=0xc8;
+       }
+       LCD_CMD=0x2e;
+       pause(48000);
+       LCD_CMD=0x2f;
+       LCD_CMD=0xa4;
+       LCD_CMD=0xa6;
+}
+
+/*
+ * spi0 stuff (+ cc1100)
+ */
+
+#define SLAVE  0
+#define MASTER 1
+
+void spi1_init(u8 width,u8 type,u8 div) {
+
+       if((width<8)|(width>16))
+               width=8;
+       if(width==16)
+               width=0;
+
+       div&=0xfe;
+       if(div<8)
+               div=8;
+
+       S1SPCR=(1<<2)|(width<<8)|(type<<5);
+       S1SPCCR=div;
+}
+
+#define cc1100_init    spi1_init(8,MASTER,8)
+
+void spi1_send(u16 data) {
+
+       S1SPDR=data;
+
+       while(!(S1SPSR&(1<<7)))
+               continue;
+}
+
+void bl_init(void) {
+
+       IODIR0|=(1<<4);
+}
+
+void bl_toggle(void) {
+
+       if(IOPIN0&(1<<4))
+               IOCLR0=(1<<4);
+       else
+               IOSET0=(1<<4);
+}
+
+void bl_on(void) {
+
+       IOCLR0=(1<<4);
+}
+
+void bl_off(void) {
+
+       IOSET0=(1<<4);
+}
+
 /*
  * main function
  */
@@ -173,17 +289,20 @@ u8 uart0_get_byte(void) {
 int main() {
 
        char buf[]="betty - live from the flash at 0x80000000! ;)\r\n";
-       u8 byte;
 
        pll_init();
        uart0_init();
        ext_mem_bank_init();
        pin_select_init();
+       init_lcd(0);
+       bl_init();
+
+       pause(0xffffff);
 
        while(1) {
-               byte=uart0_get_byte();
                uart0_send_string(buf);
-               uart0_send_byte(byte);
+               bl_toggle();
+               pause(0x9ffff);
        }
 
        return 0;