Diff: source/family/nordic/target_reset_nrf51.c

Revision:

0:01f31e923fe2

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/source/family/nordic/target_reset_nrf51.c	Tue Apr 07 12:55:42 2020 +0200
@@ -0,0 +1,62 @@
+/**
+ * @file    target_reset.c
+ * @brief   Target reset for the nrf51
+ *
+ * DAPLink Interface Firmware
+ * Copyright (c) 2009-2019, ARM Limited, All Rights Reserved
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "swd_host.h"
+#include "DAP_config.h"
+#include "target_family.h"
+#include "target_board.h"
+
+static void swd_set_target_reset_nrf(uint8_t asserted)
+{
+    if (asserted) {
+        swd_init_debug();
+
+        //Set POWER->RESET on NRF to 1
+        if (!swd_write_ap(AP_TAR, 0x40000000 + 0x544)) {
+            return;
+        }
+
+        if (!swd_write_ap(AP_DRW, 1)) {
+            return;
+        }
+
+        //Hold RESET and SWCLK low for a minimum of 100us
+        if(g_board_info.swd_set_target_reset){
+            g_board_info.swd_set_target_reset(asserted);
+        }
+        PIN_SWCLK_TCK_CLR();
+        PIN_SWDIO_TMS_CLR();
+        //osDelay(1);
+    } else {
+        PIN_SWCLK_TCK_SET();
+        PIN_SWDIO_TMS_SET();
+        if(g_board_info.swd_set_target_reset){
+            g_board_info.swd_set_target_reset(asserted);
+        }
+    }
+}
+
+const target_family_descriptor_t g_nordic_nrf51 = {
+    .family_id = kNordic_Nrf51_FamilyID,
+    .default_reset_type = kSoftwareReset,
+    .soft_reset_type = SYSRESETREQ,
+    .swd_set_target_reset = swd_set_target_reset_nrf,
+};