void print_unicode_string(char* str, u32 len) {
u32 i; // byte index
print_dbg("\r\n");
for(i=0; i<len; i++) {
print_dbg_char(str[i]);
}
}
void serial_process(s32 data) {
// process_serial_t serial_decode = &serial_decode_dummy;
u16 c = (u16)data;
while(serial_read_pos != c) {
//////////////////
//// TEST: loopback
print_dbg_char(serial_buffer[serial_read_pos]);
serial_read_pos++;
if(serial_read_pos == SERIAL_BUFFER_SIZE) serial_read_pos = 0;
}
// testing///
// serial_send_start(2);
// serial_send_byte(10);
// serial_send_end();
// ///////////////////
/*
// DONE: implement proper framing, ie: http://eli.thegreenplace.net/2009/08/12/framing-in-serial-communications/
// code 27 is escape
if(c == 27 && escape == 0) escape = 1;
// check for null, indicating complete packet
else if(c == 0 && escape == 0) {
if(serial_buffer[0] >= eComNumCommands) { // check for garbage command
print_dbg("bad serial command.");
serial_write_pos++;
} else {
serial_decode = serialFuncs[serial_buffer[serial_read_pos]]; // first byte is index
(*serial_decode)(serial_read_pos); // do the thing according to command index
serial_write_pos++;
if(serial_write_pos == SERIAL_BUFFER_SIZE) serial_write_pos = 0; // wrap
serial_read_pos = serial_write_pos; // start of next packet
}
// normal data copy
} else {
serial_buffer[serial_write_pos] = c;
serial_write_pos++;
if(serial_write_pos == SERIAL_BUFFER_SIZE) serial_write_pos = 0;
escape = 0;
}
}*/
}
/*! \brief Sets the SDRAM Controller up, initializes the SDRAM found on the
* board and tests it.
*/
int main(void)
{
unsigned long sdram_size, progress_inc, i, j, tmp, noErrors = 0;
volatile unsigned long *sdram = SDRAM;
// Switch to external oscillator 0.
pcl_switch_to_osc(PCL_OSC0, FOSC0, OSC0_STARTUP);
// Initialize the debug USART module.
init_dbg_rs232(FOSC0);
// Calculate SDRAM size in words (32 bits).
sdram_size = SDRAM_SIZE >> 2;
print_dbg("\x0CSDRAM size: ");
print_dbg_ulong(SDRAM_SIZE >> 20);
print_dbg(" MB\r\n");
// Initialize the external SDRAM chip.
sdramc_init(FOSC0);
print_dbg("SDRAM initialized\r\n");
// Determine the increment of SDRAM word address requiring an update of the
// printed progression status.
progress_inc = (sdram_size + 50) / 100;
// Fill the SDRAM with the test pattern.
for (i = 0, j = 0; i < sdram_size; i++)
{
if (i == j * progress_inc)
{
LED_Toggle(LED_SDRAM_WRITE);
print_dbg("\rFilling SDRAM with test pattern: ");
print_dbg_ulong(j++);
print_dbg_char('%');
}
sdram[i] = i;
}
LED_Off(LED_SDRAM_WRITE);
print_dbg("\rSDRAM filled with test pattern \r\n");
// Recover the test pattern from the SDRAM and verify it.
for (i = 0, j = 0; i < sdram_size; i++)
{
if (i == j * progress_inc)
{
LED_Toggle(LED_SDRAM_READ);
print_dbg("\rRecovering test pattern from SDRAM: ");
print_dbg_ulong(j++);
print_dbg_char('%');
}
tmp = sdram[i];
if (tmp != i)
{
noErrors++;
}
}
LED_Off(LED_SDRAM_READ);
print_dbg("\rSDRAM tested: ");
print_dbg_ulong(noErrors);
print_dbg(" corrupted word(s) \r\n");
if (noErrors)
{
LED_Off(LED_SDRAM_ERRORS);
while (1)
{
LED_Toggle(LED_SDRAM_ERRORS);
cpu_delay_ms(200, FOSC0); // Fast blink means errors.
}
}
else
{
LED_Off(LED_SDRAM_OK);
while (1)
{
LED_Toggle(LED_SDRAM_OK);
cpu_delay_ms(1000, FOSC0); // Slow blink means OK.
}
}
}
