Add comment to IO_Config_Override.h

Signed-off-by: iotvietmember <[email protected]>

Author: iotmember

source/board/override_vbluno51/IO_Config_Override.h

@@ -0,0 +1,113 @@
+/**
+ * @file    IO_Config_Override.c
+ * @brief   Alternative IO for LPC11U35 based Hardware Interface Circuit
+ *
+ * DAPLink Interface Firmware
+ * Copyright (c) 2009-2017, 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.
+ */
+
+/**
+ * The VBLUno51 board use PIO0_9(18) pin for TGT_SWCLK function.
+ * Because it uses RTS/CTS pins for UART Hardware flow control feature.
+ */
+
+#ifndef __IO_CONFIG_H__
+#define __IO_CONFIG_H__
+
+#include "LPC11Uxx.h"
+#include "daplink.h"
+
+// This GPIO configuration is only valid for the LPC11U35 HIC
+COMPILER_ASSERT(DAPLINK_HIC_ID == DAPLINK_HIC_ID_LPC11U35);
+
+// Peripheral register bit masks (used for pin inits)
+#define FUNC_0                          0
+#define FUNC_1                          1
+#define PULL_DOWN_ENABLED               (1 << 3)
+#define PULL_UP_ENABLED                 (2 << 3)
+#define OPENDRAIN                       (1 << 10)
+
+// DAP LED                              PIO0_21
+#define PIN_DAP_LED_PORT                0
+#define PIN_DAP_LED_BIT                 21
+#define PIN_DAP_LED                     (1 << PIN_DAP_LED_BIT)
+#define PIN_DAP_LED_IOCON               LPC_IOCON->PIO0_21
+#define PIN_DAP_LED_IOCON_INIT          (FUNC_0 | PULL_UP_ENABLED)
+
+// MSD LED                              PIO0_20
+#define PIN_MSD_LED_PORT                0
+#define PIN_MSD_LED_BIT                 20
+#define PIN_MSD_LED                     (1 << PIN_MSD_LED_BIT)
+#define PIN_MSD_LED_IOCON               LPC_IOCON->PIO0_20
+#define PIN_MSD_LED_IOCON_INIT          (FUNC_0 | PULL_UP_ENABLED)
+
+// CDC LED                              PIO0_11
+#define PIN_CDC_LED_PORT                0
+#define PIN_CDC_LED_BIT                 11
+#define PIN_CDC_LED                     (1 << PIN_CDC_LED_BIT)
+#define PIN_CDC_LED_IOCON               LPC_IOCON->TDI_PIO0_11
+#define PIN_CDC_LED_IOCON_INIT          (FUNC_1 | PULL_UP_ENABLED)
+
+// Non-Forwarded Reset in PIN           PIO1_19
+#define PIN_RESET_IN_PORT               1
+#define PIN_RESET_IN_BIT                19
+#define PIN_RESET_IN                    (1 << PIN_RESET_IN_BIT)
+#define PIN_RESET_IN_IOCON              LPC_IOCON->PIO1_19
+#define PIN_RESET_IN_IOCON_INIT         (FUNC_0 | OPENDRAIN | PULL_UP_ENABLED)
+
+// Forwarded Reset in PIN               PIO0_1
+#define PIN_RESET_IN_FWRD_PORT          0
+#define PIN_RESET_IN_FWRD_BIT           1
+#define PIN_RESET_IN_FWRD               (1 << PIN_RESET_IN_FWRD_BIT)
+#define PIN_RESET_IN_FWRD_IOCON         LPC_IOCON->PIO0_1
+#define PIN_RESET_IN_FWRD_IOCON_INIT    (FUNC_0 | OPENDRAIN | PULL_UP_ENABLED)
+
+// nRESET OUT Pin                       PIO0_2
+#define PIN_nRESET_PORT                 0
+#define PIN_nRESET_BIT                  2
+#define PIN_nRESET                      (1 << PIN_nRESET_BIT)
+#define PIN_nRESET_IOCON                LPC_IOCON->PIO0_2
+#define PIN_nRESET_IOCON_INIT           (FUNC_0 | OPENDRAIN | PULL_UP_ENABLED)
+
+// SWCLK/TCK Pin                        PIO0_9
+#define PIN_SWCLK_PORT                  0
+#define PIN_SWCLK_BIT                   9
+#define PIN_SWCLK                       (1 << PIN_SWCLK_BIT)
+#define PIN_SWCLK_TCK_IOCON             LPC_IOCON->PIO0_9
+#define PIN_SWCLK_TCK_IOCON_INIT        (FUNC_0 | PULL_UP_ENABLED)
+
+// SWDIO/TMS In/Out Pin                 PIO0_8
+#define PIN_SWDIO_PORT                  0
+#define PIN_SWDIO_BIT                   8
+#define PIN_SWDIO                       (1 << PIN_SWDIO_BIT)
+#define PIN_SWDIO_TMS_IOCON             LPC_IOCON->PIO0_8
+#define PIN_SWDIO_TMS_IOCON_INIT        (FUNC_0 | PULL_UP_ENABLED)
+
+// TDI Pin                              PIO0_17
+#define PIN_TDI_PORT                    17
+#define PIN_TDI_BIT                     17
+#define PIN_TDI                         (1 << PIN_TDI_BIT)
+#define PIN_TDI_IOCON                   LPC_IOCON->PIO0_17
+#define PIN_TDI_IOCON_INIT              (FUNC_0 | PULL_UP_ENABLED)
+
+// SWO/TDO Pin                          PIO0_9
+#define PIN_TDO_PORT                    9
+#define PIN_TDO_BIT                     9
+#define PIN_TDO                         (1 << PIN_TDO_BIT)
+#define PIN_TDO_IOCON                   LPC_IOCON->PIO0_9
+#define PIN_TDO_IOCON_INIT              (FUNC_0 | PULL_UP_ENABLED)
+
+#endif