From 19eea5d42d8d143c509b82e40ea75e2778efbc94 Mon Sep 17 00:00:00 2001
From: rjkm <none>
Date: Mon, 9 Aug 2021 09:03:02 +0200
Subject: [PATCH] add getiq to get IQ values from MCI cards

---
 apps/Makefile |   2 +-
 apps/getiq.c  | 100 ++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 101 insertions(+), 1 deletion(-)
 create mode 100644 apps/getiq.c

diff --git a/apps/Makefile b/apps/Makefile
index 16860c0..7962616 100644
--- a/apps/Makefile
+++ b/apps/Makefile
@@ -1,4 +1,4 @@
-all: cit citin flashprog modt ddtest setmod ddflash setmod2 pls setmod3 modconfig ddinfo
+all: cit citin flashprog modt ddtest setmod ddflash setmod2 pls setmod3 modconfig ddinfo getiq
 
 cit: cit.c
 	$(CC) -o cit cit.c -lpthread
diff --git a/apps/getiq.c b/apps/getiq.c
new file mode 100644
index 0000000..59c8734
--- /dev/null
+++ b/apps/getiq.c
@@ -0,0 +1,100 @@
+#include <stdio.h>
+#include <stdint.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <linux/types.h>
+#include <getopt.h>
+
+typedef uint8_t u8;
+typedef uint16_t u16;
+typedef int16_t s16;
+typedef uint32_t u32;
+typedef uint64_t u64;
+
+#include "../ddbridge/ddbridge-mci.h"
+#include "../ddbridge/ddbridge-ioctl.h"
+
+void print_iq(struct mci_result *res, int fd)
+{
+	dprintf(fd, "%d,%d\n", res->iq_symbol.i, res->iq_symbol.q);
+}
+
+int get_iq(int dev, uint32_t link, uint8_t demod, int fd)
+{
+	struct ddb_mci_msg msg = {
+		.link = link,
+		.cmd.command = MCI_CMD_GET_IQSYMBOL,
+		.cmd.demod = demod,
+		.cmd.get_iq_symbol.tap = 0,
+		.cmd.get_iq_symbol.point = 0,
+	};
+	int ret;
+	int i;
+	
+	ret = ioctl(dev, IOCTL_DDB_MCI_CMD, &msg);
+	if (ret < 0) {
+		printf("Error: %d %d\n", ret, errno);
+		return ret;
+	}
+	if (msg.res.status & 0x80) {
+		printf("MCI errror %02x\n", msg.res.status);
+		return ret;
+	}
+		
+	print_iq(&msg.res, fd);
+	return ret;
+}
+
+
+#define SIZE_OF_ARRAY(a) (sizeof(a)/sizeof(a[0]))
+
+int main(int argc, char*argv[])
+{
+	char ddbname[80];
+	int fd = -1, all = 1, i, ret = 0, ddb;
+	char fn[128];
+	int32_t device = -1, demod = -1;
+	
+	while (1) {
+		int cur_optind = optind ? optind : 1;
+		int option_index = 0;
+		int c;
+		static struct option long_options[] = {
+			{"device", required_argument, 0, 'd'},
+			{"demod", required_argument, 0, 'n'},
+			{0, 0, 0, 0}
+		};
+                c = getopt_long(argc, argv, "ad:n:",
+				long_options, &option_index);
+		if (c == -1)
+			break;
+		switch (c) {
+		case 'd':
+			device = strtoul(optarg, NULL, 0);
+			break;
+		case 'n':
+			demod = strtoul(optarg, NULL, 0);
+			break;
+		case 'a':
+			all = 1;
+			break;
+		default:
+			break;
+		}
+	}
+	if (optind < argc) {
+		printf("too many arguments\n");
+		exit(1);
+	}
+	sprintf(ddbname, "/dev/ddbridge/card%d", device);
+	ddb = open(ddbname, O_RDWR);
+	if (ddb < 0)
+		return -3;
+	for (i = 0; i < 20000; i++)
+		get_iq(ddb, 0, demod, 1);
+}