Arrow / Mbed OS DAPLink Reset

Repostiory containing DAPLink source code with Reset Pin workaround for HANI_IOT board.

Upstream: https://github.com/ARMmbed/DAPLink

source/board/microbit.c@0:01f31e923fe2, 2020-04-07 (annotated)

Committer:
Pawel Zarembski
Date:
Tue Apr 07 12:55:42 2020 +0200
Revision:
0:01f31e923fe2
hani: DAPLink with reset workaround

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Pawel Zarembski 0:01f31e923fe2 1 /**
Pawel Zarembski 0:01f31e923fe2 2 * @file microbit.c
Pawel Zarembski 0:01f31e923fe2 3 * @brief board ID for the BBC Microbit board
Pawel Zarembski 0:01f31e923fe2 4 *
Pawel Zarembski 0:01f31e923fe2 5 * DAPLink Interface Firmware
Pawel Zarembski 0:01f31e923fe2 6 * Copyright (c) 2009-2019, ARM Limited, All Rights Reserved
Pawel Zarembski 0:01f31e923fe2 7 * SPDX-License-Identifier: Apache-2.0
Pawel Zarembski 0:01f31e923fe2 8 *
Pawel Zarembski 0:01f31e923fe2 9 * Licensed under the Apache License, Version 2.0 (the "License"); you may
Pawel Zarembski 0:01f31e923fe2 10 * not use this file except in compliance with the License.
Pawel Zarembski 0:01f31e923fe2 11 * You may obtain a copy of the License at
Pawel Zarembski 0:01f31e923fe2 12 *
Pawel Zarembski 0:01f31e923fe2 13 * http://www.apache.org/licenses/LICENSE-2.0
Pawel Zarembski 0:01f31e923fe2 14 *
Pawel Zarembski 0:01f31e923fe2 15 * Unless required by applicable law or agreed to in writing, software
Pawel Zarembski 0:01f31e923fe2 16 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
Pawel Zarembski 0:01f31e923fe2 17 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
Pawel Zarembski 0:01f31e923fe2 18 * See the License for the specific language governing permissions and
Pawel Zarembski 0:01f31e923fe2 19 * limitations under the License.
Pawel Zarembski 0:01f31e923fe2 20 */
Pawel Zarembski 0:01f31e923fe2 21 #include "fsl_device_registers.h"
Pawel Zarembski 0:01f31e923fe2 22 #include "IO_Config.h"
Pawel Zarembski 0:01f31e923fe2 23 #include "DAP.h"
Pawel Zarembski 0:01f31e923fe2 24 #include "target_family.h"
Pawel Zarembski 0:01f31e923fe2 25 #include "target_board.h"
Pawel Zarembski 0:01f31e923fe2 26
Pawel Zarembski 0:01f31e923fe2 27 const char * const board_id_mb_1_3 = "9900";
Pawel Zarembski 0:01f31e923fe2 28 const char * const board_id_mb_1_5 = "9901";
Pawel Zarembski 0:01f31e923fe2 29
Pawel Zarembski 0:01f31e923fe2 30 typedef enum {
Pawel Zarembski 0:01f31e923fe2 31 BOARD_VERSION_1_3 = 0,
Pawel Zarembski 0:01f31e923fe2 32 BOARD_VERSION_1_5 = 1,
Pawel Zarembski 0:01f31e923fe2 33 } mb_version_t;
Pawel Zarembski 0:01f31e923fe2 34
Pawel Zarembski 0:01f31e923fe2 35 // Enables Board Type Pin, reads it and disables it
Pawel Zarembski 0:01f31e923fe2 36 // Depends on gpio_init() to have been executed already
Pawel Zarembski 0:01f31e923fe2 37 static uint8_t read_board_type_pin(void) {
Pawel Zarembski 0:01f31e923fe2 38 uint8_t pin_state = 0;
Pawel Zarembski 0:01f31e923fe2 39 // GPIO mode, Pull enable, pull down, input
Pawel Zarembski 0:01f31e923fe2 40 PIN_BOARD_TYPE_PORT->PCR[PIN_BOARD_TYPE_BIT] = PORT_PCR_MUX(1) | PORT_PCR_PE(1) | PORT_PCR_PS(0);
Pawel Zarembski 0:01f31e923fe2 41 PIN_BOARD_TYPE_GPIO->PDDR &= ~PIN_BOARD_TYPE;
Pawel Zarembski 0:01f31e923fe2 42 // Wait to stabilise, based on gpio.c busy_wait(), at -O2 10000 iterations delay ~850us
Pawel Zarembski 0:01f31e923fe2 43 for (volatile uint32_t i = 10000; i > 0; i--);
Pawel Zarembski 0:01f31e923fe2 44 // Read pin
Pawel Zarembski 0:01f31e923fe2 45 pin_state = (PIN_BOARD_TYPE_GPIO->PDIR & PIN_BOARD_TYPE);
Pawel Zarembski 0:01f31e923fe2 46 // Revert and disable
Pawel Zarembski 0:01f31e923fe2 47 PIN_BOARD_TYPE_PORT->PCR[PIN_BOARD_TYPE_BIT] = PORT_PCR_MUX(0) | PORT_PCR_PE(0);
Pawel Zarembski 0:01f31e923fe2 48 return pin_state;
Pawel Zarembski 0:01f31e923fe2 49 }
Pawel Zarembski 0:01f31e923fe2 50
Pawel Zarembski 0:01f31e923fe2 51 static void set_board_id(mb_version_t board_version) {
Pawel Zarembski 0:01f31e923fe2 52 switch (board_version) {
Pawel Zarembski 0:01f31e923fe2 53 case BOARD_VERSION_1_3:
Pawel Zarembski 0:01f31e923fe2 54 target_device.rt_board_id = board_id_mb_1_3;
Pawel Zarembski 0:01f31e923fe2 55 break;
Pawel Zarembski 0:01f31e923fe2 56 case BOARD_VERSION_1_5:
Pawel Zarembski 0:01f31e923fe2 57 target_device.rt_board_id = board_id_mb_1_5;
Pawel Zarembski 0:01f31e923fe2 58 break;
Pawel Zarembski 0:01f31e923fe2 59 default:
Pawel Zarembski 0:01f31e923fe2 60 target_device.rt_board_id = board_id_mb_1_5;
Pawel Zarembski 0:01f31e923fe2 61 break;
Pawel Zarembski 0:01f31e923fe2 62 }
Pawel Zarembski 0:01f31e923fe2 63 }
Pawel Zarembski 0:01f31e923fe2 64
Pawel Zarembski 0:01f31e923fe2 65 // Called in main_task() to init before USB and files are configured
Pawel Zarembski 0:01f31e923fe2 66 static void prerun_board_config(void) {
Pawel Zarembski 0:01f31e923fe2 67 // With only two boards the digital pin read maps directly to the type
Pawel Zarembski 0:01f31e923fe2 68 mb_version_t board_version = (mb_version_t)read_board_type_pin();
Pawel Zarembski 0:01f31e923fe2 69 set_board_id(board_version);
Pawel Zarembski 0:01f31e923fe2 70 }
Pawel Zarembski 0:01f31e923fe2 71
Pawel Zarembski 0:01f31e923fe2 72 // USB HID override function return 1 if the activity is trivial or response is null
Pawel Zarembski 0:01f31e923fe2 73 uint8_t usbd_hid_no_activity(uint8_t *buf)
Pawel Zarembski 0:01f31e923fe2 74 {
Pawel Zarembski 0:01f31e923fe2 75 if(buf[0] == ID_DAP_Vendor3 && buf[1] == 0)
Pawel Zarembski 0:01f31e923fe2 76 return 1;
Pawel Zarembski 0:01f31e923fe2 77 else
Pawel Zarembski 0:01f31e923fe2 78 return 0;
Pawel Zarembski 0:01f31e923fe2 79 }
Pawel Zarembski 0:01f31e923fe2 80
Pawel Zarembski 0:01f31e923fe2 81 const board_info_t g_board_info = {
Pawel Zarembski 0:01f31e923fe2 82 .info_version = kBoardInfoVersion,
Pawel Zarembski 0:01f31e923fe2 83 .family_id = kNordic_Nrf51_FamilyID,
Pawel Zarembski 0:01f31e923fe2 84 .daplink_url_name = "MICROBITHTM",
Pawel Zarembski 0:01f31e923fe2 85 .daplink_drive_name = "MICROBIT ",
Pawel Zarembski 0:01f31e923fe2 86 .daplink_target_url = "https://microbit.org/device/?id=@B&v=@V",
Pawel Zarembski 0:01f31e923fe2 87 .prerun_board_config = prerun_board_config,
Pawel Zarembski 0:01f31e923fe2 88 .target_cfg = &target_device,
Pawel Zarembski 0:01f31e923fe2 89 };