Add program to read from serial port and print to screen. (works)

2 files changed, 57 insertions, 1 deletions

diff --git a/host/apps/omap_debug/Makefile b/host/apps/omap_debug/Makefile
index f292379f4..4779969de 100644
--- a/host/apps/omap_debug/Makefile
+++ b/host/apps/omap_debug/Makefile
@@ -1,6 +1,6 @@
 CFLAGS=-Wall -I../../lib/usrp/usrp_e/
 
-all : usrp-e-spi usrp-e-i2c usrp-e-rw usrp-e-uart usrp-e-led usrp-e-ctl usrp-e-button
+all : usrp-e-spi usrp-e-i2c usrp-e-rw usrp-e-uart usrp-e-led usrp-e-ctl usrp-e-button usrp-e-uart-rx
 
 usrp-e-spi : usrp-e-spi.c
 
@@ -11,6 +11,8 @@ usrp-e-rw : usrp-e-rw.c
 
 usrp-e-uart : usrp-e-uart.c
 
+usrp-e-uart-rx : usrp-e-uart-rx.c
+
 usrp-e-led : usrp-e-led.c
 
 usrp-e-ctl : usrp-e-ctl.c
@@ -22,6 +24,7 @@ clean :
 	rm -f usrp-e-i2c
 	rm -f usrp-e-rw
 	rm -f usrp-e-uart
+	rm -f usrp-e-uart-rx
 	rm -f usrp-e-led
 	rm -f usrp-e-ctl
 	rm -f usrp-e-button
diff --git a/host/apps/omap_debug/usrp-e-uart-rx.c b/host/apps/omap_debug/usrp-e-uart-rx.c
new file mode 100644
index 000000000..24b417980
--- /dev/null
+++ b/host/apps/omap_debug/usrp-e-uart-rx.c
@@ -0,0 +1,53 @@
+#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;
+}