int main(void) {
uint8_t buf;
usart_init(9600);
sei();
usart_transmit_char_block('\r');
usart_transmit_char_block('\n');
usart_transmit_char_block('B');
usart_transmit((uint8_t *)"\r\nSTRING\r\n", 10);
buf = 'K';
usart_transmit(&buf, 1);
usart_transmit(&buf, 1);
usart_transmit(&buf, 1);
usart_transmit_char('I');
buf = '\r';
usart_transmit(&buf, 1);
usart_transmit_char('\n');
/*usart_transmit_block('I');*/
/*usart_transmit_block('L');*/
/*usart_transmit_block('L');*/
/* And the rest is handled by interrupts. */
for (;;);
}
void bt_init( void )
{
uint8_t num_baudrates = sizeof(baudrates)/sizeof(uint32_t);
uint8_t i = 0;
int16_t received;
/* first set BT module AT mode pin */
io_on( HC05_CMD_PORT, HC05_CMD_PIN);
/* now wait 100ms */
delay(100);
/* iterate through baudrates */
do
{
usart_config_baudrate( baudrates[i]);
usart_flush();
/* send AT command */
usart_transmit( (uint8_t *)BTCMD_AT, BTCMD_AT_LEN);
/* wait for response */
received = usart_receive( response_buffer, 4, RESPONSE_TIMEOUT);
/* we found a valid answer */
if( received > 0)
{
break;
}
i++;
}while(i < num_baudrates);
if( i > 0)
{
/* module seems to be configured for default -> reprogram */
usart_transmit( (uint8_t *)BTCMD_SET_NAME, BTCMD_SET_NAME_LEN);
received = usart_receive( response_buffer, RESPONSE_LENGTH, RESPONSE_TIMEOUT);
/* module seems to be configured for default -> reprogram */
usart_transmit( (uint8_t *)BTCMD_SET_PW, BTCMD_SET_PW_LEN);
received = usart_receive( response_buffer, RESPONSE_LENGTH, RESPONSE_TIMEOUT);
/* module seems to be configured for default -> reprogram */
usart_transmit( (uint8_t *)BTCMD_SET_BAUD, BTCMD_SET_BAUD_LEN);
received = usart_receive( response_buffer, RESPONSE_LENGTH, RESPONSE_TIMEOUT);
}
/* send reset */
usart_transmit( (uint8_t *)BTCMD_RESET, BTCMD_RESET_LEN);
received = usart_receive( response_buffer, RESPONSE_LENGTH, RESPONSE_TIMEOUT);
/* leave AT mode */
io_off( HC05_CMD_PORT, HC05_CMD_PIN);
/* wait a bit */
delay( 100);
usart_config_baudrate( baudrates[0]);
usart_flush();
bt_ready = 1;
}
int _write(int file, char *ptr, int len)
{
int i;
char *p = ptr;
switch (file) {
case STDOUT_FILENO:
for (i = 0; i < len; i++) {
if (*p == '\n')
usart_transmit(USART1, (uint8_t)'\r');
usart_transmit(USART1, (uint8_t)*(p++));
}
break;
default:
break;
}
return i;
}
/* Function called by printf to send data to created stream */
int stream_printf(unsigned char var, FILE *stream) {
if (var == '\n')
{
stream_printf('\r', 0); // Translate \n to \r for terminal
}
usart_transmit(var); // Transmit data
return 0;
}
void SetupCC1020PD(void)
{
uint8_t x;
char bufff[100];
// Put CC1020 into power-down
WriteToCC1020Register(CC1020_MAIN,0x1F);
x = ReadFromCC1020Register(CC1020_MAIN);
sprintf(bufff,"Wake up complete : %d a\r\n",x);
usart_transmit(bufff);
// Turn off PA to minimise current draw
WriteToCC1020Register(CC1020_PA_POWER,0x00);
}
void WriteToCC1020Register(unsigned char addr, unsigned char data)
{
cbi(PORTB,SS_bar); // Clear SS_bar to enable slave
char array1[25];
unsigned char dummy;
dummy=SPDR;
SPDR=(addr<<1)|0x01; // Write address to CC1020, left shift,write bit is always 1
// Wait until data is written
while (! (SPSR & (1<<SPIF)));
if(WCOL==1)
{
sprintf(array1,"\nCollision detected!!!");
usart_transmit(array1);
}
dummy=SPDR;
SPDR=data;
while (! (SPSR & (1<<SPIF)));
//PORTD |=0x01;
sbi(PORTB,SS_bar); //PSEL must be made high for atleast 50ns after each read/write operation
}
void rs485_transmit(uint8_t data) {
rs485_switch_transmitter(ON);
usart_transmit(data);
rs485_switch_transmitter(OFF);
}
void ctrl_send_state(char state)
{
usart_init();
usart_transmit(state);
}
/* Transmit the given data over the serial port */
void transmit_data(unsigned char *data) {
while (*data) { // Loop through and transmit entire string
usart_transmit(*data);
data++;
}
}
