1 files changed, 87 insertions, 0 deletions
diff --git a/host/utils/usrp-e-i2c.c b/host/utils/usrp-e-i2c.c
new file mode 100644
index 000000000..c6fd4c632
--- /dev/null
+++ b/host/utils/usrp-e-i2c.c
@@ -0,0 +1,87 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+
+#include <linux/usrp_e.h>
+
+// Usage: usrp_e_i2c w address data0 data1 data 2 ....
+// Usage: usrp_e_i2c r address count
+
+int main(int argc, char *argv[])
+{
+	int fp, ret, i, tmp;
+	struct usrp_e_i2c *i2c_msg;
+	int direction, address, count;
+
+	if (argc < 3) {
+		printf("Usage: usrp-e-i2c w address data0 data1 data2 ...\n");
+		printf("Usage: usrp-e-i2c r address count\n");
+		printf("All addresses and data in hex.\n");
+		exit(-1);
+	}
+
+	if (strcmp(argv[1], "r") == 0) {
+		direction = 0;
+	} else if (strcmp(argv[1], "w") == 0) {
+		direction = 1;
+	} else {
+		return -1;
+	}
+
+	sscanf(argv[2], "%X", &address);
+	printf("Address = %X\n", address);
+
+	fp = open("/dev/usrp_e0", O_RDWR);
+	printf("fp = %d\n", fp);
+	if (fp < 0) {
+		perror("Open failed");
+		return -1;
+	}
+
+//	sleep(1);
+
+	if (direction) {
+		count = argc - 3;
+	} else {
+		sscanf(argv[3], "%X", &count);
+	}
+	printf("Count = %X\n", count);
+
+	i2c_msg = malloc(sizeof(i2c_msg) + count * sizeof(char));
+
+	i2c_msg->addr = address;
+	i2c_msg->len = count;
+
+	for (i = 0; i < count; i++) {
+		i2c_msg->data[i] = i;
+	}
+
+	if (direction) {
+		// Write
+
+		for (i=0; i<count; i++) {
+			sscanf(argv[3+i], "%X", &tmp);
+			i2c_msg->data[i] = tmp;
+		}
+
+		ret = ioctl(fp, USRP_E_I2C_WRITE, i2c_msg);
+		printf("Return value from i2c_write ioctl: %d\n", ret);
+	} else {
+		// Read
+
+		ret = ioctl(fp, USRP_E_I2C_READ, i2c_msg);
+		printf("Return value from i2c_read ioctl: %d\n", ret);
+
+		printf("Ioctl: %d Data read :", ret);
+		for (i=0; i<count; i++) {
+			printf(" %X", i2c_msg->data[i]);
+		}
+		printf("\n");
+			
+	}
+	return 0;
+}