int uart_read(char *c, int rsize)
{
struct uart_token token;
token.cur_bytes = 0;
token.req_bytes = rsize;
token.buf = c;
if(ps_cdev_read(&serial_device, token.buf, token.req_bytes, &read_callback, &token) < 0){
printf("Error reading from UART\n");
return -1;
}
read_sem_wait();
return token.cur_bytes;
}
void uart__init(void)
{
/* Iniitialise the UART */
printf("Initialising UART driver\n");
if(exynos_serial_init(DEV_ID, uart0base, NULL, &uart_dummy_clk,
&serial_device)){
printf("Failed to initialise UART\n");
while(1);
}
ps_cdev_set_flags(&serial_device, serial_device.flags & ~SERIAL_AUTO_CR);
serial_configure(&serial_device, BAUD_RATE, 8, PARITY_NONE, 1);
/* Prime semaphores */
read_sem_wait();
write_sem_wait();
}
void pre_init(void)
{
/* Initialise the UART */
printf("Initialising UART driver\n");
if(exynos_serial_init(DEV_ID, (void *) vaddr, NULL, NULL, &serial_device)){
printf("Failed to initialise UART\n");
while(1);
}
serial_configure(&serial_device, BAUD_RATE, 8, PARITY_NONE, 1);
serial_device.flags &= ~SERIAL_AUTO_CR;
/* Prime semaphore */
read_sem_wait();
/* Register for IRQs */
interrupt_acknowledge();
}
