X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=firmware%2Fs88w-r.c;fp=firmware%2Fs88w-r.c;h=0000000000000000000000000000000000000000;hb=9c37d18b9c70fdb70dfec453398c4649e9e57586;hp=019897483cc63b2b36dc1f6cc79cf151e4064f72;hpb=49b6b6ad84ec47b4f9eb9ef131975cc5b72372a2;p=model-railway-devices.git

diff --git a/firmware/s88w-r.c b/firmware/s88w-r.c
deleted file mode 100644
index 0198974..0000000
--- a/firmware/s88w-r.c
+++ /dev/null
@@ -1,219 +0,0 @@
-/*
-Firmware for wireless S88 receiver module
-
-S88 pinout:
-1 - DATA
-2 - GND
-3 - CLOCK
-4 - LOAD
-5 - RESET
-6 - POWER
-
-ATMega pinout:
-D0 - serial RX
-D1 - serial TX
-D2 - S88 DATA
-D3 - S88 CLOCK
-D4 - S88 LOAD
-D5 - S88 RESET
-*/
-
-#include <avr/io.h>
-#include <avr/interrupt.h>
-#include "lcd.h"
-#include "serial.h"
-#include "delay.h"
-
-#define DATA_OUT PORTD2
-#define CLOCK    PIND3
-#define LOAD     PIND4
-#define RESET    PIND5
-
-#define LCD_DISABLE PINB4
-
-#define BIT(n)   (1<<(n))
-
-void receive(uint8_t);
-uint8_t hexdigit(uint8_t);
-uint8_t decode_hex(uint8_t);
-
-volatile uint8_t rx_buf[7];
-volatile uint8_t rx_fill = 0xFF;
-volatile uint8_t input[128] = { 0 };
-volatile uint8_t latch[128] = { 0 };
-volatile uint8_t lcd_enabled = 0;
-uint8_t log_row = 0;
-uint8_t log_col = 0;
-
-int main()
-{
-	uint8_t clock_high = 0;
-	uint8_t bits = 0;
-	uint8_t n_bits = 8;
-	uint8_t offset = 0;
-	uint8_t i;
-
-	DDRD = 0x06;   // 00000110
-	PORTD = 0xC0;  // 11000000
-	DDRB = 0x20;   // 00100000
-	PORTB = 0x1F;  // 00011111
-
-	serial_init(9600);
-	lcd_init();
-
-	sei();
-
-	while(1)
-	{
-		uint8_t b_pins, d_pins;
-
-		b_pins = PINB;
-		d_pins = PIND;
-
-		if(d_pins&BIT(CLOCK))
-		{
-			if(!clock_high)
-			{
-				if(d_pins&BIT(LOAD))
-				{
-					offset = 0;
-					bits = latch[0];
-					n_bits = 8;
-				}
-				else
-				{
-					bits >>= 1;
-					if(!--n_bits)
-					{
-						++offset;
-						bits = latch[offset];
-						n_bits = 8;
-					}
-				}
-
-				if(bits&1)
-					PORTD |= BIT(DATA_OUT);
-				else
-					PORTD &= ~BIT(DATA_OUT);
-
-				clock_high = 1;
-			}
-		}
-		else if(clock_high)
-			clock_high = 0;
-
-		if(d_pins&BIT(RESET))
-		{
-			uint8_t i;
-			for(i=0; i<128; ++i)
-				latch[i] = input[i];
-		}
-
-		if(b_pins&BIT(LCD_DISABLE))
-		{
-			if(lcd_enabled)
-			{
-				lcd_enabled = 0;
-
-				lcd_clear();
-			}
-		}
-		else if(!lcd_enabled)
-		{
-			lcd_enabled = 1;
-			log_row = 0;
-			log_col = 0;
-
-			lcd_clear();
-			for(i=0; i<20; ++i)
-				lcd_write(hexdigit(input[9-i/2]>>(4-i%2*4)));
-			lcd_gotoxy(0, 1);
-			lcd_write(255);
-		}
-	}
-}
-
-void receive(uint8_t c)
-{
-	if(rx_fill==0xFF)
-	{
-		if(c==':')
-			rx_fill = 0;
-	}
-	else if(c=='.')
-	{
-		if(rx_fill>=4)
-		{
-			uint16_t offset;
-			uint8_t nibbles;
-			uint8_t i;
-
-			offset = (decode_hex(rx_buf[0])<<8) | (decode_hex(rx_buf[1])<<4) | decode_hex(rx_buf[2]);
-			nibbles = (offset&3);
-			offset >>= 2;
-			if(rx_fill>3+nibbles)
-			{
-				for(i=0; i<=nibbles; ++i)
-				{
-					uint16_t j = offset+nibbles-i;
-					uint8_t shift = 4*(j&1);
-					uint8_t bits = decode_hex(rx_buf[3+i]);
-					input[j/2] = (input[j/2]&~(0xF<<shift)) | (bits<<shift);
-					latch[j/2] = input[j/2];
-				}
-
-				if(lcd_enabled)
-				{
-					lcd_gotoxy(19-offset-nibbles, 0);
-					for(i=0; i<=nibbles; ++i)
-						lcd_write(rx_buf[3+i]);
-				}
-			}
-		}
-		rx_fill = 0xFF;
-	}
-	else
-	{
-		if(rx_fill<sizeof(rx_buf))
-			rx_buf[rx_fill++] = c;
-		else
-			rx_fill = 0xFF;
-	}
-
-	if(lcd_enabled)
-	{
-		lcd_gotoxy(log_col, 1+log_row);
-		lcd_write(c);
-		++log_col;
-		if(log_col>=20)
-		{
-			log_col = 0;
-			++log_row;
-			if(log_row>=3)
-				log_row = 0;
-			lcd_gotoxy(log_col, 1+log_row);
-		}
-		lcd_write(255);
-	}
-}
-
-SERIAL_SET_CALLBACK(receive)
-
-uint8_t hexdigit(uint8_t n)
-{
-	n &= 0xF;
-	if(n<10)
-		return '0'+n;
-	else
-		return 'A'+(n-0xA);
-}
-
-uint8_t decode_hex(uint8_t c)
-{
-	if(c>='0' && c<='9')
-		return c-'0';
-	else if(c>='A' && c<='F')
-		return 0xA+(c-'A');
-	else
-		return 0;
-}