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#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <fcntl.h>
#include <string.h>
#include <sys/ioctl.h>
#include "usrp_e.h"
#include "usrp_e_regs.hpp"
// Usage: usrp_e_uart <string>
int main(int argc, char *argv[])
{
int fp, ret;
struct usrp_e_ctl16 d;
__u16 clkdiv;
if (argc == 0) {
printf("Usage: usrp-e-uart-rx <opt clkdiv>\n");
printf("clkdiv = 278 is 230.4k \n");
printf("clkdiv = 556 is 115.2k \n");
exit(-1);
}
fp = open("/dev/usrp_e0", O_RDWR);
printf("fp = %d\n", fp);
if (argc == 2) {
clkdiv = atoi(argv[1]);
d.offset = UE_REG_UART_CLKDIV;
d.count = 1;
d.buf[0] = clkdiv;
ret = ioctl(fp, USRP_E_WRITE_CTL16, &d);
}
while(1) {
d.offset = UE_REG_UART_RXLEVEL;
d.count = 1;
ret = ioctl(fp, USRP_E_READ_CTL16, &d);
if (d.buf[0] > 0) {
d.offset = UE_REG_UART_RXCHAR;
d.count = 1;
ret = ioctl(fp, USRP_E_READ_CTL16, &d);
printf("%c", d.buf[0]);
fflush(stdout);
}
}
return 0;
}
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