?? main.c
字號:
spi_transfer_8(msg_buffer[5]|(1<<3));
}
else
{
spi_transfer_8(msg_buffer[5]);
}
spi_transfer_16(address&0xFFFF);
spi_transfer_8(msg_buffer[i+10]);
//Check if we can do polling
if (msg_buffer[8]!=msg_buffer[i+10])
{
//We have to check if we have an uneven byte.
//Set the polling address to a byte address
//so that we can poll the right location
polling_address = (address&0xFFFF)*2;
if (i&1) polling_address++;
}
//increment (word) address only when we have an uneven (byte) address
if (i&1) address++;
}
//If this page is complete the bit 7 of mode will be set and we programm the page
if (mode&0x80)
{
spi_transfer_8(msg_buffer[6]);
spi_transfer_16(start_address&0xFFFF);
spi_transfer_8(0);
//If we have no valid polling address switch to simple wait mode
if (polling_address==0)
{
mode = (mode&(~0x70)) | 0x10;
}
//Different polling methods
//Hard waiting
if ((mode&0x70) == 0x10)
{
wait_ms(msg_buffer[4]);
}
//Data polling
else if ((mode&0x70) == 0x20)
{
do
{
//If we have an uneven byte read the
//high byte
if (polling_address%2)
{
spi_transfer_8(msg_buffer[7]|(1<<3));
}
else
{
spi_transfer_8(msg_buffer[7]);
}
spi_transfer_16(polling_address/2);
tmp=spi_transfer_8(0x00);
}
while (tmp==msg_buffer[8]);
}
//RDY/BSY polling
else if ((mode&0x70) == 0x40)
{
while (spi_transfer_32(0xF0000000)&1);
}
//If something was not correct with the given mode do
//hard waiting. Should never reach this point
else
{
wait_ms(msg_buffer[4]);
}
}
}
num_bytes = 2;
msg_buffer[0] = CMD_PROGRAM_FLASH_ISP;
msg_buffer[1] = STATUS_CMD_OK;
}
//////////////////////////////////////
//CMD_READ_FLASH_ISP
//////////////////////////////////////
else if (cmd==CMD_READ_FLASH_ISP)
{
block_size = ((unsigned int)msg_buffer[1])<<8;
block_size |= msg_buffer[2];
tmp = msg_buffer[3];
for (i=0;i<block_size;i++)
{
//Select Low or High-Byte
if (i&1)
{
spi_transfer_8(tmp|(1<<3));
}
else
{
spi_transfer_8(tmp);
}
spi_transfer_16(address&0xFFFF);
msg_buffer[i+2] = spi_transfer_8(0);
//increment (word) address only when we have an uneven (byte) address
if (i&1) address++;
}
num_bytes = block_size+3;
msg_buffer[0] = CMD_READ_FLASH_ISP;
msg_buffer[1] = STATUS_CMD_OK;
msg_buffer[block_size+2] = STATUS_CMD_OK;
}
//////////////////////////////////////
//CMD_PROGRAM_EEPROM_ISP
//////////////////////////////////////
else if (cmd==CMD_PROGRAM_EEPROM_ISP)
{
block_size = ((unsigned int)msg_buffer[1])<<8;
block_size |= msg_buffer[2];
mode = msg_buffer[3];
//Byte Mode
if ((mode&1) == 0)
{
for (i=0;i<block_size;i++)
{
spi_transfer_8(msg_buffer[5]);
spi_transfer_16(address&0xFFFF);
spi_transfer_8(msg_buffer[i+10]);
//Check if we can do polling
if ((msg_buffer[i+10]!=msg_buffer[8])&&(msg_buffer[i+10]!=msg_buffer[9]))
{
polling_address = address&0xFFFF;
}
//If not switch the mode hard waiting
else
{
mode = (mode&(~0x0E)) | 0x02;
}
//Different polling methods
//Hard waiting
if ((mode&0x0E) == 0x02)
{
wait_ms(msg_buffer[4]);
}
//Data polling
else if ((mode&0x0E) == 0x04)
{
do
{
spi_transfer_8(msg_buffer[7]);
spi_transfer_16(polling_address);
tmp=spi_transfer_8(0x00);
}
while ((tmp==msg_buffer[8])||(tmp==msg_buffer[9]));
}
//RDY/BSY polling
else if ((mode&0x0E) == 0x08)
{
while (spi_transfer_32(0xF0000000)&1);
}
//If something was not correct with the given mode do
//hard waiting. Should never reach this point
else
{
wait_ms(msg_buffer[4]);
}
//increment address
address++;
}
}
//Page Mode
else
{
for (i=0;i<block_size;i++)
{
spi_transfer_8(msg_buffer[5]);
spi_transfer_16(address&0xFFFF);
spi_transfer_8(msg_buffer[i+10]);
//Check if we can do polling
if ((msg_buffer[i+10]!=msg_buffer[8])&&(msg_buffer[i+10]!=msg_buffer[9]))
{
polling_address = address&0xFFFF;
}
//increment (word) address only when we have an uneven (byte) address
address++;
}
//If this page is complete the bit 7 of mode will be set and we programm the page
if (mode&0x80)
{
spi_transfer_8(msg_buffer[6]);
spi_transfer_16(start_address&0xFFFF);
spi_transfer_8(0);
//If we have no valid polling address switch to simple wait mode
if (polling_address==0)
{
mode = (mode&(~0x70)) | 0x10;
}
//Different polling methods
//Hard waiting
if ((mode&0x70) == 0x10)
{
wait_ms(msg_buffer[4]);
}
//Data polling
else if ((mode&0x70) == 0x20)
{
do
{
//If we have an uneven byte read the
//high byte
if (i&1)
{
spi_transfer_8(msg_buffer[7]|(1<<3));
}
else
{
spi_transfer_8(msg_buffer[7]);
}
spi_transfer_16(polling_address);
tmp=spi_transfer_8(0x00);
}
while (tmp==msg_buffer[8]);
}
//RDY/BSY polling
else if ((mode&0x70) == 0x40)
{
while (spi_transfer_32(0xF0000000)&1);
}
//If something was not correct with the given mode do
//hard waiting. Should never reach this point
else
{
wait_ms(msg_buffer[4]);
}
}
}
num_bytes = 2;
msg_buffer[0] = CMD_PROGRAM_EEPROM_ISP;
msg_buffer[1] = STATUS_CMD_OK;
}
//////////////////////////////////////
//CMD_READ_EEPROM_ISP
//////////////////////////////////////
else if (cmd==CMD_READ_EEPROM_ISP)
{
block_size = ((unsigned int)msg_buffer[1])<<8;
block_size |= msg_buffer[2];
tmp = msg_buffer[3];
for (i=0;i<block_size;i++)
{
//Select Low or High-Byte
spi_transfer_8(tmp);
spi_transfer_16(address&0xFFFF);
msg_buffer[i+2] = spi_transfer_8(0);
//increment address
address++;
}
num_bytes = block_size+3;
msg_buffer[0] = CMD_READ_EEPROM_ISP;
msg_buffer[1] = STATUS_CMD_OK;
msg_buffer[block_size+2] = STATUS_CMD_OK;
}
//////////////////////////////////////
//CMD_PROGRAM_FUSE_ISP
//////////////////////////////////////
else if (cmd==CMD_PROGRAM_FUSE_ISP)
{
tmp = spi_transfer_8(msg_buffer[1]);
tmp = spi_transfer_8(msg_buffer[2]);
tmp = spi_transfer_8(msg_buffer[3]);
tmp = spi_transfer_8(msg_buffer[4]);
num_bytes = 3;
msg_buffer[0] = CMD_PROGRAM_FUSE_ISP;
msg_buffer[1] = STATUS_CMD_OK;
msg_buffer[2] = STATUS_CMD_OK;
}
//////////////////////////////////////
//CMD_READ_FUSE_ISP
//////////////////////////////////////
else if (cmd==CMD_READ_FUSE_ISP)
{
tmp = spi_transfer_8(msg_buffer[2]);
if (msg_buffer[1] == 1) msg_buffer[2] = tmp;
tmp = spi_transfer_8(msg_buffer[3]);
if (msg_buffer[1] == 2) msg_buffer[2] = tmp;
tmp = spi_transfer_8(msg_buffer[4]);
if (msg_buffer[1] == 3) msg_buffer[2] = tmp;
tmp = spi_transfer_8(msg_buffer[5]);
if (msg_buffer[1] == 4) msg_buffer[2] = tmp;
num_bytes = 4;
msg_buffer[0] = CMD_READ_FUSE_ISP;
msg_buffer[1] = STATUS_CMD_OK;
msg_buffer[3] = STATUS_CMD_OK;
}
//////////////////////////////////////
//CMD_PROGRAM_LOCK_ISP
//////////////////////////////////////
else if (cmd==CMD_PROGRAM_LOCK_ISP)
{
tmp = spi_transfer_8(msg_buffer[1]);
tmp = spi_transfer_8(msg_buffer[2]);
tmp = spi_transfer_8(msg_buffer[3]);
tmp = spi_transfer_8(msg_buffer[4]);
num_bytes = 3;
msg_buffer[0] = CMD_PROGRAM_LOCK_ISP;
msg_buffer[1] = STATUS_CMD_OK;
msg_buffer[2] = STATUS_CMD_OK;
}
//////////////////////////////////////
//CMD_READ_LOCK_ISP
//////////////////////////////////////
else if (cmd==CMD_READ_LOCK_ISP)
{
tmp = spi_transfer_8(msg_buffer[2]);
if (msg_buffer[1] == 1) msg_buffer[2] = tmp;
tmp = spi_transfer_8(msg_buffer[3]);
if (msg_buffer[1] == 2) msg_buffer[2] = tmp;
tmp = spi_transfer_8(msg_buffer[4]);
if (msg_buffer[1] == 3) msg_buffer[2] = tmp;
tmp = spi_transfer_8(msg_buffer[5]);
if (msg_buffer[1] == 4) msg_buffer[2] = tmp;
num_bytes = 4;
msg_buffer[0] = CMD_READ_LOCK_ISP;
msg_buffer[1] = STATUS_CMD_OK;
msg_buffer[3] = STATUS_CMD_OK;
}
//////////////////////////////////////
//CMD_READ_SIGNATURE_ISP
//////////////////////////////////////
else if (cmd==CMD_READ_SIGNATURE_ISP)
{
tmp = spi_transfer_8(msg_buffer[2]);
if (msg_buffer[1] == 1) msg_buffer[2] = tmp;
tmp = spi_transfer_8(msg_buffer[3]);
if (msg_buffer[1] == 2) msg_buffer[2] = tmp;
tmp = spi_transfer_8(msg_buffer[4]);
if (msg_buffer[1] == 3) msg_buffer[2] = tmp;
tmp = spi_transfer_8(msg_buffer[5]);
if (msg_buffer[1] == 4) msg_buffer[2] = tmp;
num_bytes = 4;
msg_buffer[0] = CMD_READ_SIGNATURE_ISP;
msg_buffer[1] = STATUS_CMD_OK;
msg_buffer[3] = STATUS_CMD_OK;
}
//////////////////////////////////////
//CMD_READ_OSCCAL_ISP
//////////////////////////////////////
else if (cmd==CMD_READ_OSCCAL_ISP)
{
tmp = spi_transfer_8(msg_buffer[2]);
if (msg_buffer[1] == 1) msg_buffer[2] = tmp;
tmp = spi_transfer_8(msg_buffer[3]);
if (msg_buffer[1] == 2) msg_buffer[2] = tmp;
tmp = spi_transfer_8(msg_buffer[4]);
if (msg_buffer[1] == 3) msg_buffer[2] = tmp;
tmp = spi_transfer_8(msg_buffer[5]);
if (msg_buffer[1] == 4) msg_buffer[2] = tmp;
num_bytes = 4;
msg_buffer[0] = CMD_READ_OSCCAL_ISP;
msg_buffer[1] = STATUS_CMD_OK;
msg_buffer[3] = STATUS_CMD_OK;
}
//////////////////////////////////////
//CMD_SPI_MULTI
//////////////////////////////////////
else if (cmd==CMD_SPI_MULTI)
{
unsigned char bytes_to_transmit;
unsigned char tx_bytes = msg_buffer[1];
unsigned char rx_bytes = msg_buffer[2];
unsigned char rx_from = msg_buffer[3];
//When there are more bytes to receive than to transmit
if (tx_bytes < rx_bytes)
{
bytes_to_transmit = rx_bytes;
}
else
{
bytes_to_transmit = tx_bytes;
}
i = 0;
num_bytes = 0;
do
{
if (tx_bytes > 0)
{
tmp = spi_transfer_8(msg_buffer[i+4]);
}
else
{
tmp = spi_transfer_8(0);
}
if (rx_from == 0)
{
msg_buffer[2 + num_bytes] = tmp;
num_bytes++;
}
else
{
rx_from--;
}
i++;
tx_bytes--;
}
while (--bytes_to_transmit);
num_bytes += 3;
msg_buffer[0] = CMD_SPI_MULTI;
msg_buffer[1] = STATUS_CMD_OK;
msg_buffer[num_bytes-1] = STATUS_CMD_OK;
}
//////////////////////////////////////
//Transmission of the result
//////////////////////////////////////
if (num_bytes>0)
{
interface_putc(MESSAGE_START);
interface_putc(seq_num);
interface_put16(num_bytes);
interface_putc(TOKEN);
for (i=0;i<num_bytes;i++)
{
interface_putc(msg_buffer[i]);
}
interface_send_check();
}
}
/**
Hardware initialization
Timer
ADC
*/
void chip_init(void)
{
DDRB = 0;
DDRC = 0;
DDRD = 0;
PORTB = 0;
PORTC = 0;
PORTD = 0;
DDRB=(1<<0)|(1<<1)|(1<<2);
DDRC=(1<<0)|(1<<1)|(1<<2); //LED_RT, LED_GN
//ADC
ADMUX=0x60; //Avcc=Aref, Left Adjusted (8Bit-Aufl鰏ung aus ADCH)
ADCSRA = 0xC6; //ADC Enable, Init, 125kHz (bei 8MHz Clock)
//Timer 1 (Systemint 1ms)
TCCR1B=0x09; //CTC-Mode /1
OCR1A=(F_CPU/1000); //8MHz / 8000 = 1kHz
TIMSK|=(1<<OCIE1A); //enable OC-INT
}
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