Проектування мікропроцесорної метеостанції

uart_puts(buffer);

uart_puts_P("°C");

}

void DS18X20_show_id_uart(uint8_t *id, size_t n)

{

size_t i;

for(i = 0; i < n; i++) {

if (i == 0) uart_puts_P("FC:");

else if (i == n-1) uart_puts_P("CRC:");

if (i == 1) uart_puts_P("SN: ");

uart_puthex_byte(id[i]);

uart_puts_P(" ");

if (i == 0) {

if (id[0] == DS18S20_ID) uart_puts_P ("(18S)");

else if (id[0] == DS18B20_ID) uart_puts_P ("(18B)");

else uart_puts_P ("(?)");

}

}

if (crc8(id, OW_ROMCODE_SIZE))

uart_puts_P(" CRC FAIL ");

else

uart_puts_P(" CRC O.K. ");

}

void show_sp_uart(uint8_t *sp, size_t n)

{

size_t i;

uart_puts_P("SP:");

for(i = 0; i < n; i++) {

if (i == n-1) uart_puts_P("CRC:");

uart_puthex_byte(sp[i]);

uart_puts_P(" ");

}

}

/* verbose output rom-search follows read-scratchpad in one loop */

uint8_t DS18X20_read_meas_all_verbose(void)

{

uint8_t id[OW_ROMCODE_SIZE], sp[DS18X20_SP_SIZE], diff;

uint8_t i;

uint16_t meas;

uint8_t subzero, cel, cel_frac_bits;

for(diff = OW_SEARCH_FIRST; diff != OW_LAST_DEVICE;)

{

diff = ow_rom_search(diff, &id[0]);

if(diff == OW_PRESENCE_ERR) {

uart_puts_P("No Sensor found\r");

return OW_PRESENCE_ERR;

}

if(diff == OW_DATA_ERR) {

uart_puts_P("Bus Error\r");

return OW_DATA_ERR;

}

DS18X20_show_id_uart(id, OW_ROMCODE_SIZE);

if(id[0] == DS18B20_ID || id[0] == DS18S20_ID) { // temperature sensor

uart_putc ('\r');

ow_byte_wr(DS18X20_READ); // read command

for (i=0 ; i< DS18X20_SP_SIZE; i++)

sp[i]=ow_byte_rd();

show_sp_uart(sp, DS18X20_SP_SIZE);

if (crc8(&sp[0], DS18X20_SP_SIZE))

uart_puts_P(" CRC FAIL ");

else

uart_puts_P(" CRC O.K. ");

uart_putc ('\r');

meas = sp[0]; // LSB Temp. from Scrachpad-Data

meas |= (uint16_t) (sp[1] << 8); // MSB

uart_puts_P(" T_raw=");

uart_puthex_byte((uint8_t)(meas>>8));

uart_puthex_byte((uint8_t)meas);

uart_puts_P(" ");

if(id[0] == DS18S20_ID) { // 18S20

uart_puts_P("S20/09");

}

else if (id[0] == DS18B20_ID) { // 18B20

i=sp[DS18B20_CONF_REG];

if ((i & DS18B20_12_BIT) == DS18B20_12_BIT) {

uart_puts_P("B20/12");

}

else if ((i & DS18B20_11_BIT) == DS18B20_11_BIT) {

uart_puts_P("B20/11");

}

else if ((i & DS18B20_10_BIT) == DS18B20_10_BIT) {

uart_puts_P(" B20/10 ");

}

else { // if ((i & DS18B20_9_BIT) == DS18B20_9_BIT) {

uart_puts_P("B20/09");

}

}

uart_puts_P(" ");

DS18X20_meas_to_cel(id[0], sp, &subzero, &cel, &cel_frac_bits);

DS18X20_uart_put_temp(subzero, cel, cel_frac_bits);

uart_puts("\r");

} // if meas-sensor

} // loop all sensors

uart_puts_P("\r");

return DS18X20_OK;

}

void LCDsendChar(uint8_t ch) //Sends Char to LCD

{

LDP=((ch&0b11110000)>>2);

LCP|=1<<LCD_RS;

LCP|=1<<LCD_E;

_delay_ms(5);

LCP&=~(1<<LCD_E);

LCP&=~(1<<LCD_RS);

_delay_ms(5);

LDP=((ch&0b00001111)<<2);

LCP|=1<<LCD_RS;

LCP|=1<<LCD_E;

_delay_ms(5);

LCP&=~(1<<LCD_E);

LCP&=~(1<<LCD_RS);

_delay_ms(5);

}

void LCDsendCommand(uint8_t cmd) //Sends Command to LCD

{

LDP=((cmd&0b11110000)>>2);

LCP|=1<<LCD_E;

_delay_ms(5);

LCP&=~(1<<LCD_E);

_delay_ms(5);

LDP=((cmd&0b00001111)<<2);

LCP|=1<<LCD_E;

_delay_ms(5);

LCP&=~(1<<LCD_E);

_delay_ms(5);

}

void LCDinit(void)//Initializes LCD

{

_delay_ms(10);

LDP=0x00;

LCP=0x00;

LDDR|=1<<LCD_D7|1<<LCD_D6|1<<LCD_D5|1<<LCD_D4;

LCDR|=1<<LCD_E|1<<LCD_RS;

//---------one------

LDP=0<<LCD_D7|0<<LCD_D6|1<<LCD_D5|1<<LCD_D4; //4 bit mode

LCP|=1<<LCD_E|0<<LCD_RS;

_delay_ms(5);

LCP&=~(1<<LCD_E);

_delay_ms(5);

//-----------two-----------

LDP=0<<LCD_D7|0<<LCD_D6|1<<LCD_D5|1<<LCD_D4; //4 bit mode

LCP|=1<<LCD_E|0<<LCD_RS;

_delay_ms(5);

LCP&=~(1<<LCD_E);

_delay_ms(5);

//-------three-------------

LDP=0<<LCD_D7|0<<LCD_D6|1<<LCD_D5|0<<LCD_D4; //4 bit mode

LCP|=1<<LCD_E|0<<LCD_RS;

_delay_ms(5);

LCP&=~(1<<LCD_E);

_delay_ms(5);

//--------4 bit--dual line---------------

LCDsendCommand(0b00101000);

//-----increment address, cursor shift------

LCDsendCommand(0b00001110);

}

void LCDclr(void) //Clears LCD

{

LCDsendCommand(1<<LCD_CLR);

}

void LCDhome(void) //LCD cursor home

{

LCDsendCommand(1<<LCD_HOME);

}

void LCDstring(uint8_t* data, uint8_t nBytes) //Outputs string to LCD

{

register uint8_t i;

// check to make sure we have a good pointer

if (!data) return;

// print data

for(i=0; i<nBytes; i++)

{

LCDsendChar(data[i]);

}

}

void LCDGotoXY(uint8_t x, uint8_t y) //Cursor to X Y position

{

register uint8_t DDRAMAddr;

// remap lines into proper order

switch(y)

{

case 0: DDRAMAddr = LCD_LINE0_DDRAMADDR+x; break;

case 1: DDRAMAddr = LCD_LINE1_DDRAMADDR+x; break;

case 2: DDRAMAddr = LCD_LINE2_DDRAMADDR+x; break;

case 3: DDRAMAddr = LCD_LINE3_DDRAMADDR+x; break;

default: DDRAMAddr = LCD_LINE0_DDRAMADDR+x;

}

// set data address

LCDsendCommand(1<<LCD_DDRAM | DDRAMAddr);

}

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