Add software controlled reset

firmware/hackrf_usb/hackrf_usb.c

@@ -80,7 +80,8 @@ static const usb_request_handler_fn vendor_request_handler[] = {
 	usb_vendor_request_init_sweep,
 	usb_vendor_request_operacake_get_boards,
 	usb_vendor_request_operacake_set_ports,
-	usb_vendor_request_set_hw_sync_mode
+	usb_vendor_request_set_hw_sync_mode,
+	usb_vendor_request_reset
 };
 
 static const uint32_t vendor_request_handler_count =

firmware/hackrf_usb/usb_api_board_info.c

@@ -25,6 +25,7 @@
 #include <hackrf_core.h>
 #include <rom_iap.h>
 #include <usb_queue.h>
+#include <libopencm3/lpc43xx/wwdt.h>
 
 #include <stddef.h>
 #include <string.h>
@@ -91,3 +92,13 @@ usb_request_status_t usb_vendor_request_read_partid_serialno(
 	}
 	return USB_REQUEST_STATUS_OK;
 }
+
+usb_request_status_t usb_vendor_request_reset(
+	usb_endpoint_t* const endpoint, const usb_transfer_stage_t stage)
+{
+	if (stage == USB_TRANSFER_STAGE_SETUP) {
+		wwdt_reset(100000);
+		usb_transfer_schedule_ack(endpoint->in);
+	}
+	return USB_REQUEST_STATUS_OK;
+}

firmware/hackrf_usb/usb_api_board_info.h

@@ -39,5 +39,7 @@ usb_request_status_t usb_vendor_request_read_version_string(
 	usb_endpoint_t* const endpoint, const usb_transfer_stage_t stage);
 usb_request_status_t usb_vendor_request_read_partid_serialno(
 	usb_endpoint_t* const endpoint, const usb_transfer_stage_t stage);
+usb_request_status_t usb_vendor_request_reset(
+	usb_endpoint_t* const endpoint, const usb_transfer_stage_t stage);
 
 #endif /* end of include guard: __USB_API_BOARD_INFO_H__ */

host/hackrf-tools/src/hackrf_spiflash.c

@@ -91,6 +91,7 @@ static void usage()
 	printf("\t-r <filename>: Read data into file.\n");
 	printf("\t-w <filename>: Write data from file.\n");
 	printf("\t-d <serialnumber>: Serial number of device, if multiple devices\n");
+	printf("\t-R: Reset HackRF after other operations.\n");
 	printf("\t-v: Verbose output.\n");
 }
 
@@ -112,8 +113,9 @@ int main(int argc, char** argv)
 	bool read = false;
 	bool write = false;
 	bool verbose = false;
+	bool reset = false;
 
-	while ((opt = getopt_long(argc, argv, "a:l:r:w:d:v", long_options,
+	while ((opt = getopt_long(argc, argv, "a:l:r:w:d:vR", long_options,
 			&option_index)) != EOF) {
 		switch (opt) {
 		case 'a':
@@ -142,6 +144,10 @@ int main(int argc, char** argv)
 			verbose = true;
 			break;
 
+		case 'R':
+			reset = true;
+			break;
+
 		default:
 			fprintf(stderr, "opt error: %d\n", opt);
 			usage();
@@ -156,17 +162,17 @@ int main(int argc, char** argv)
 		}
 	}
 
-	if (write == read) {
-		if (write == true) {
+	if((write == read) && (write == reset)) {
+		if(write && read) {
 			fprintf(stderr, "Read and write options are mutually exclusive.\n");
 		} else {
-			fprintf(stderr, "Specify either read or write option.\n");
+			fprintf(stderr, "Specify either read, write, or reset option.\n");
 		}
 		usage();
 		return EXIT_FAILURE;
 	}
 
-	if (path == NULL) {
+	if((read || write) && (path == NULL)) {
 		fprintf(stderr, "Specify a path to a file.\n");
 		usage();
 		return EXIT_FAILURE;
@@ -214,7 +220,7 @@ int main(int argc, char** argv)
 		}
 	}
 
-	if (fd == NULL) {
+	if((read || write) && (fd == NULL)) {
 		fprintf(stderr, "Failed to open file: %s\n", path);
 		return EXIT_FAILURE;
 	}
@@ -233,8 +239,7 @@ int main(int argc, char** argv)
 		return EXIT_FAILURE;
 	}
 
-	if (read) 
-	{
+	if(read) {
 		ssize_t bytes_written;
 		tmp_length = length;
 		while (tmp_length) 
@@ -261,7 +266,9 @@ int main(int argc, char** argv)
 			fd = NULL;
 			return EXIT_FAILURE;
 		}
-	} else {
+	}
+
+	if(write) {
 		ssize_t bytes_read = fread(data, 1, length, fd);
 		if (bytes_read != length) {
 			fprintf(stderr, "Failed read file (read %d bytes).\n",
@@ -297,13 +304,24 @@ int main(int argc, char** argv)
 		}
 	}
 
-	result = hackrf_close(device);
-	if (result != HACKRF_SUCCESS) {
-		fprintf(stderr, "hackrf_close() failed: %s (%d)\n",
-				hackrf_error_name(result), result);
-		fclose(fd);
-		fd = NULL;
-		return EXIT_FAILURE;
+	if(reset) {
+		result = hackrf_reset(device);
+		if (result != HACKRF_SUCCESS) {
+			fprintf(stderr, "hackrf_reset() failed: %s (%d)\n",
+					hackrf_error_name(result), result);
+			fclose(fd);
+			fd = NULL;
+			return EXIT_FAILURE;
+		}
+	} else {
+		result = hackrf_close(device);
+		if (result != HACKRF_SUCCESS) {
+			fprintf(stderr, "hackrf_close() failed: %s (%d)\n",
+					hackrf_error_name(result), result);
+			fclose(fd);
+			fd = NULL;
+			return EXIT_FAILURE;
+		}
 	}
 
 	hackrf_exit();

host/libhackrf/src/hackrf.c

@@ -77,6 +77,7 @@ typedef enum {
 	HACKRF_VENDOR_REQUEST_OPERACAKE_GET_BOARDS = 27,
 	HACKRF_VENDOR_REQUEST_OPERACAKE_SET_PORTS = 28,
 	HACKRF_VENDOR_REQUEST_SET_HW_SYNC_MODE = 29,
+	HACKRF_VENDOR_REQUEST_RESET = 30,
 } hackrf_vendor_request;
 
 typedef enum {
@@ -1829,6 +1830,25 @@ int ADDCALL hackrf_set_operacake_ports(hackrf_device* device,
 	}
 }
 
+int ADDCALL hackrf_reset(hackrf_device* device) {
+	int result = libusb_control_transfer(
+		device->usb_device,
+ 		LIBUSB_ENDPOINT_OUT | LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_RECIPIENT_DEVICE,
+		HACKRF_VENDOR_REQUEST_RESET,
+		0,
+		0,
+		NULL,
+		0,
+		0
+	);
+
+	if( result != 0 ) {
+		return HACKRF_ERROR_LIBUSB;
+	} else {
+		return HACKRF_SUCCESS;
+	}
+}
+
 #ifdef __cplusplus
 } // __cplusplus defined.
 #endif

host/libhackrf/src/hackrf.h

@@ -222,6 +222,8 @@ extern ADDAPI int ADDCALL hackrf_set_operacake_ports(hackrf_device* device,
                                        uint8_t port_a,
                                        uint8_t port_b);
 
+extern ADDAPI int ADDCALL hackrf_reset(hackrf_device* device);
+
 #ifdef __cplusplus
 } // __cplusplus defined.
 #endif