// send 32bit unsigned integer as SUMP metadata
void sump_sendmeta_uint32(char type, unsigned int i) {
uart_putch(type);
uart_putch((i >> 24) & 0xff);
uart_putch((i >> 16) & 0xff);
uart_putch((i >> 8) & 0xff);
uart_putch(i & 0xff);
}
void print_string(int a_ch, const char* str)
{
while (*str)
{
#ifdef CONFIG_UART_TX_INTERRUPT
while (1)
{
if (uart_putch(a_ch,*str))
break;
}
#else
uart_putch(a_ch,*str);
#endif
str++;
}
}
// This method interacts with socket zero only, check socket zero registers in the data sheet to know how to use them
// to accomplish the required tasks.
uint8_t S0_initialize_socket(uint8_t eth_protocol,uint16_t tcp_port)
{
// this method should close socket zero if it is already closed on client side.
wiznet_write(S0_MR,eth_protocol);// then it should set socket zero mode according to the passed in eth_protocol variable
// then it should define the port number associated with this socket
uint8_t* ptr_tcp_port = (uint8_t*)&tcp_port;
wiznet_write(S0_PORT,*ptr_tcp_port);
wiznet_write(S0_PORT + 1,*(ptr_tcp_port + 1));
wiznet_write(S0_CR,CR_OPEN);// then it should open the socket and wait till it is opened
//while(get_socket0_status() != SOCK_INIT);
// then it should make sure the socket is initialized correctly and return TRUE in that case
// in case of failure return FALSE and close the socket just in case!
if(get_socket0_status() != SOCK_INIT)
{
wiznet_write(S0_CR,CR_CLOSE);
return FALSE;
}
printf("INIT DONE 1\n");
printf("%x\n",get_socket0_status());
uart_putch('\0',&uart_str);
return TRUE;
}
int uart_putch(char ch,FILE *stream)
{
if (ch == '\n')
uart_putch('\r', stream);
while (!(UCSR0A & (1<<UDRE0)));
UDR0=ch;
return 0;
}
int uart_getch(FILE *stream)
{
unsigned char ch;
while (!(UCSR0A & (1<<RXC0)));
ch=UDR0;
/* Echo the Output Back to terminal */
uart_putch(ch,stream);
return ch;
}
void SysTickHandler(void){
static long i = 0;
buffer[i] = GPIO_PORTB_DATA_R;
i++;
if(i > BUFFERSIZE){
ROM_SysTickDisable();
ROM_SysTickIntDisable();
i = 0;
// send it over uart
for (int j = 0; j < BUFFERSIZE; j++){
uart_putch(buffer[j]);
}
}
}
void uart_puts(char* str) {
while (*str != '\0')
uart_putch(*str++);
}
/** Write a character to the UART console.
* @param ch Character to write. */
static void uart_console_putch(char ch) {
uart_putch(DEBUG_UART, ch);
}
int main(void)
{
ansi_init();
uart_init();// Initialize UART Peripheral
IntializeTimer();
// Clear the Screen of the hyper terminal <send clear code>
spi_init();// Initialize SPI
w5100_init();// Initial the W5100 Ethernet
if(S0_initialize_socket(MR_TCP,30000))
{
printf("INIT DONE 2\n");
//S0_connect(dest_ip,dest_port);
}
printf("%x\n",get_socket0_status());
uart_putch('\0',&uart_str);
uart_flush();
host= http_extract_host(url);
relativeAddress = http_extract_relativeAddress(url,strlen(host));
request= http_create_request(method,relativeAddress,httpV,host);
;//="GET / HTTP/1.1\r\nHost: www.google.com\r\nConnection: keep-alive\r\nUser-Agent: Mozilla/5.0 (windows NT 6.1; wow64) Applewebkit/537.11 (KHTML, like Gecko) Chrome/23.0.1271.97 safari/537.11\r\nAccept: text/html\r\nAccept-Encoding: gzip, deflate\r\n";
//printf("%s",request);
S0_connect(dest_ip,dest_port);
if(get_socket0_status() == SOCK_ESTABLISHED)
{
printf("Connected\n");
uart_putch('\0',&uart_str);
}
// Loop forever
int loop = 1, counter = 0;
//sei();
while(loop)
{
// keep reading the socket zero status
// and handle at least socket closed and socket established
uint8_t sockstat=get_socket0_status();
switch(sockstat/*Handle all possible socket status here*/)
{
case SOCK_CLOSED:
//printf("ERROR1\n");
//uart_putch('\0',&uart_str);
//S0_connect(dest_ip,dest_port);
printf("%x\n",get_socket0_status());
uart_putch('\0',&uart_str);
loop = 0;
break;
case SOCK_ESTABLISHED:
printf("SOCK_ESTABLISHED\n");
uart_putch('\0',&uart_str);
// Get the client request size
// And read the client Request in temp buffer
// make sure the temp buffer is sending GET request
S0_send((uint8_t*)request,strlen(request));
printf("Request Sent\n");
uart_putch('\0',&uart_str);
uart_flush();
_delay_ms(2000);
if(S0_RX_getReceivedSize() != 0)
{
counter++;
S0_recv(buf,S0_RX_getReceivedSize());
printf("RECV Response\n");
uart_putch('\0',&uart_str);
printf("%s",(char*)buf);
uart_putch('\0',&uart_str);
//loop =0;
}
// create a buffer that will hold the response and send it
// if the GET request has an option to turn on/off a LED Carry that now.
// finally disconnect the socket with the client.
break;
case SOCK_FIN_WAIT:
case SOCK_CLOSING:
case SOCK_TIME_WAIT:
case SOCK_CLOSE_WAIT:
case SOCK_LAST_ACK:
loop = 0;
printf("Recevied %d\n",counter);
uart_putch('\0',&uart_str);
close(0);
// force the socket to be closed
break;
//default:
//printf("nothing\n");
}
}
return 0;
}
// send 8bit unsigned integer as SUMP metadata
void sump_sendmeta_uint8(char type, unsigned char i) {
uart_putch(type);
uart_putch(i);
}
// send nullterminated string over UART
void uart_puts(char * s) {
while (*s != 0) {
uart_putch(*s);
s++;
}
}
// main routine
int main(void) {
// enable lazy stacking
ROM_FPUEnable();
ROM_FPULazyStackingEnable();
// run from crystal, 80 MHz
ROM_SysCtlClockSet(SYSCTL_SYSDIV_2_5 | SYSCTL_USE_PLL | SYSCTL_OSC_MAIN | SYSCTL_XTAL_16MHZ);
// enable peripherals
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_UART0);
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA);
// set UART pins
GPIOPinConfigure(GPIO_PA0_U0RX);
GPIOPinConfigure(GPIO_PA1_U0TX);
ROM_GPIOPinTypeUART(GPIO_PORTA_BASE, GPIO_PIN_0 | GPIO_PIN_1);
// init PORTB
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOB);
GPIO_PORTB_DIR_R = 0x00;
GPIO_PORTB_DEN_R = 0xff;
// configure uart
ROM_UARTConfigSetExpClk(UART0_BASE, ROM_SysCtlClockGet(), 115200, (UART_CONFIG_WLEN_8 | UART_CONFIG_STOP_ONE | UART_CONFIG_PAR_NONE));
// Enable interrupts to the processor. - not sure if this is needed...
ROM_IntMasterEnable();
// main loop
while (1) {
if (ROM_UARTCharsAvail(UART0_BASE)) {
unsigned char cmd;
cmd = ROM_UARTCharGetNonBlocking(UART0_BASE);
switch (cmd) {
case SUMP_RESET:
break;
case SUMP_ARM:
doticksampling();
break;
case SUMP_QUERY:
uart_puts("1ALS");
break;
case SUMP_GET_METADATA:
// device name
uart_putch(0x01);
uart_puts(VERSION);
uart_putch(0x00);
// amount of sample memory available (bytes)
sump_sendmeta_uint32(0x21, BUFFERSIZE);
// maximum sample rate (hz)
sump_sendmeta_uint32(0x23, MAX_SAMPLERATE);
// number of usable probes (short)
sump_sendmeta_uint8(0x40, 0x08);
// protocol version (short)
sump_sendmeta_uint8(0x41, 0x02);
// end of meta data
uart_putch(0x00);
break;
case SUMP_SET_DIVIDER: {
/*
Set Divider (80h)
When x is written, the sampling frequency is set to f = clock / (x + 1)
*/
unsigned long clock = 100000000; //no idea where this comes from...
//these three bytes are our clock divider - lsb first
unsigned char b0 = ROM_UARTCharGet(UART0_BASE);
unsigned char b1 = ROM_UARTCharGet(UART0_BASE);
unsigned char b2 = ROM_UARTCharGet(UART0_BASE);
ROM_UARTCharGet(UART0_BASE); //eat last byte
unsigned long rate = b0 | (b1 << 8) | (b2 << 16);
rate = clock / (rate+1);
ROM_SysTickPeriodSet(ROM_SysCtlClockGet() / rate);
break;
}
// long commands.. consume bytes from uart
case 0xC0:
case 0xC4:
case 0xC8:
case 0xCC:
case 0xC1:
case 0xC5:
case 0xC9:
case 0xCD:
case 0xC2:
case 0xC6:
case 0xCA:
case 0xCE:
case 0x81:
case 0x82:
ROM_UARTCharGet(UART0_BASE);
ROM_UARTCharGet(UART0_BASE);
ROM_UARTCharGet(UART0_BASE);
ROM_UARTCharGet(UART0_BASE);
break;
}
}
}
}
uint16_t S0_send(const uint8_t *buf,uint16_t buflen)
{
// given the required data and its length
// first make sure the transmission buffer on the ship has free space enough to hold your buffer
if(S0_TX_getFreeSize() < buflen)
{
_delay_ms(1000);// otherwise wait 1 ms and try to check the buffer length once again
if(S0_TX_getFreeSize() < buflen)// maximum for 1 second then return zero (FALSE) to indicate an error (do not forget to disconnect the socket)
{
disconnect(0);
return FALSE;
}
}
// if there are enough size in the transmission buffer on wiznet ship start sending the data.
// to do that you have to read the start address of the free space on the wiznet ship first.
// make a loop to calculate the real address relative to the start address you just got from the wiznet ship
// refer to the data sheet page 33 example and study it well.
uint16_t BASE = gS0_TX_BASE,TX_WR=S0_TX_getWriteAddress();
uint16_t offset= TX_WR & gSn_TX_MASK(0);
uint16_t start_physical_address = BASE + offset;
uint16_t socket_MaxSize = gSn_TX_MASK(0) + 1;
/* if overflow socket TX memory*/
if(offset + buflen > socket_MaxSize)
{
printf("overflow\n");
uart_putch('\0',&uart_str);
uint16_t upper_size = socket_MaxSize - offset;
uint16_t countByte;
for(countByte=0;countByte<upper_size;++countByte)
{
wiznet_write(start_physical_address + countByte,*(buf + countByte));
}
uint8_t *leftBuffer = buf + upper_size;
uint16_t left_size = buflen - upper_size;
countByte=0;
for(;countByte<left_size;++countByte)
{
wiznet_write(BASE + countByte,*(leftBuffer + countByte));
}
}
else
{
uint16_t countByte;
for(countByte=0;countByte<buflen;++countByte)
{
wiznet_write(start_physical_address + countByte,*(buf + countByte));
}
}
TX_WR += buflen;
uint8_t* ptr_TX_WR = (uint8_t*)&TX_WR;
wiznet_write(S0_TX_WR,*ptr_TX_WR);
wiznet_write(S0_TX_WR + 1,*(ptr_TX_WR + 1));
wiznet_write(S0_CR,CR_SEND);
_delay_us(5);
while(wiznet_read(S0_CR));
printf("Done Sending Process\n");
uart_putch('\0',&uart_str);
// finally write back the new start address for the free space on the ship.
// and send command SEND to the ship so it starts sending the buffer on the wires
// and wait till it is already sent.
}
void clear_screen() {
uart_putch(&uart0, 12);
}