X-Git-Url: https://hackdaworld.org/gitweb/?a=blobdiff_plain;f=betty%2Fbetty.c;h=3b19542792abb64df57cb0bb015519224e3a3543;hb=d6814c7408b23db8a441f731b44d4b638df24c64;hp=f2ce2e5fba098487845e8c310c3252c7ca91b999;hpb=90fa4f3eca580f497dd24e9b3afd818d3b1f7054;p=my-code%2Farm.git diff --git a/betty/betty.c b/betty/betty.c index f2ce2e5..3b19542 100644 --- a/betty/betty.c +++ b/betty/betty.c @@ -5,9 +5,282 @@ * */ +#include "betty.h" + +/* + * functions + */ + +void mmap_init(u8 memtype) { + + MEMMAP=memtype; +} + +void pll_init(void) { + + /* configuration */ + PLLCFG=0x42; // multiplier = 3 (for cclk), dividor = 4 (for f_cco) + PLLCON=0x03; // enable and set as clk source for the lpc + /* feed sequence */ + PLLFEED=0xaa; + PLLFEED=0x55; + /* wait for lock */ + while(!(PLLSTAT&(1<<10))) + continue; +} + +void ext_mem_bank_init(void) { + + BCFG0=0x10000420; // flash 1 + BCFG1=0x00000c42; // lcd + BCFG2=0x10000420; // flash 2 +} + + +void pin_select_init() { + + /* + * a[19:2] -> address lines + */ + + PINSEL2=0x0d6041d4; +} + +void uart0_init(void) { + + /* select pins 0.0 and 0.1 as tx and rx */ + PINSEL0=(PINSEL0&~(0xf))|0x05; // pin select -> tx, rx + + /* configure uart0 */ + UART0_FCR=0x07; // enable fifo + UART0_LCR=0x83; // set dlab + word length + UART0_DLL=0x04; // br: 38400 @ 10/4 mhz + UART0_DLM=0x00; + UART0_LCR=0x03; // unset dlab +} + +void uart0_send_string(char *txbuf) { + + int i; + + i=0; + + while(txbuf[i]) { + UART0_THR=txbuf[i++]; + /* flush if tx buffer maximum reached */ + if(!(i%16)) + while(!(UART0_LSR&(1<<6))) + continue; + } + + /* flush if \n and \r do not fit in the tx buffer */ + if(i>14) + while(!(UART0_LSR&(1<<6))) + continue; + + UART0_THR='\n'; + UART0_THR='\r'; + + /* flush uart0 anyways */ + while(!(UART0_LSR&(1<<6))) + continue; +} + +void uart0_send_buf16(u16 *buf,int len) { + + int i; + + i=0; + + for(i=0;i>8)&0xff; + } +} + +void uart0_send_buf32(u32 *buf,int len) { + + int i; + + i=0; + + for(i=0;i>8)&0xff; + UART0_THR=(buf[i]>>16)&0xff; + UART0_THR=(buf[i]>>24)&0xff; + } +} + +void uart0_send_byte(u8 send) { + + while(!(UART0_LSR&(1<<5))) + continue; + + UART0_THR=send; +} + +u8 uart0_get_byte(void) { + + u8 rx; + + while(!(UART0_LSR&(1<<0))) + continue; + + rx=UART0_RBR; + + 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 + */ + int main() { + char buf[]="betty - live from flash at 0x80000000! ;)\r\n"; + t_button button; + + pll_init(); + uart0_init(); + ext_mem_bank_init(); + pin_select_init(); + init_lcd(0); + bl_init(); + button_init(&button); + button_set_retries(&button,100); + + pause(0xffffff); + + bl_toggle(); + + while(1) { + pause(0x0fffff); + /* button test! */ + if(button_get_event(&button)) { + uart0_send_string(buf); + if(button.key[0]==BUTTON_POWER) + bl_toggle(); + } + } return 0; }