boting ren / Mbed OS BLEClient_mbedDevConn

This is an example of BLE GATT Client, which receives broadcast data from BLE_Server_BME280 ( a GATT server) , then transfers values up to mbed Device Connector (cloud).

Please refer details about BLEClient_mbedDevConn below. https://github.com/soramame21/BLEClient_mbedDevConn

The location of required BLE GATT server, BLE_Server_BME280, is at here. https://developer.mbed.org/users/edamame22/code/BLE_Server_BME280/

shields/TARGET_ST_BLUENRG/source/BlueNRGDevice.cpp@2:b894b3508057, 2017-09-05 (annotated)

Committer:
Ren Boting
Date:
Tue Sep 05 11:56:13 2017 +0900
Revision:
2:b894b3508057
Parent:
0:29983394c6b6 
Update all libraries and reform main.cpp

Who changed what in which revision?

UserRevisionLine numberNew contents of line
edamame22 0:29983394c6b6 1 /* mbed Microcontroller Library
edamame22 0:29983394c6b6 2 * Copyright (c) 2006-2013 ARM Limited
edamame22 0:29983394c6b6 3 *
edamame22 0:29983394c6b6 4 * Licensed under the Apache License, Version 2.0 (the "License");
edamame22 0:29983394c6b6 5 * you may not use this file except in compliance with the License.
edamame22 0:29983394c6b6 6 * You may obtain a copy of the License at
edamame22 0:29983394c6b6 7 *
edamame22 0:29983394c6b6 8 * http://www.apache.org/licenses/LICENSE-2.0
edamame22 0:29983394c6b6 9 *
edamame22 0:29983394c6b6 10 * Unless required by applicable law or agreed to in writing, software
edamame22 0:29983394c6b6 11 * distributed under the License is distributed on an "AS IS" BASIS,
edamame22 0:29983394c6b6 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
edamame22 0:29983394c6b6 13 * See the License for the specific language governing permissions and
edamame22 0:29983394c6b6 14 * limitations under the License.
edamame22 0:29983394c6b6 15 */
edamame22 0:29983394c6b6 16
edamame22 0:29983394c6b6 17 /**
edamame22 0:29983394c6b6 18 ******************************************************************************
edamame22 0:29983394c6b6 19 * @file BlueNRGDevice.cpp
edamame22 0:29983394c6b6 20 * @author STMicroelectronics
edamame22 0:29983394c6b6 21 * @brief Implementation of BLEDeviceInstanceBase
edamame22 0:29983394c6b6 22 ******************************************************************************
edamame22 0:29983394c6b6 23 * @copy
edamame22 0:29983394c6b6 24 *
edamame22 0:29983394c6b6 25 * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
edamame22 0:29983394c6b6 26 * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
edamame22 0:29983394c6b6 27 * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
edamame22 0:29983394c6b6 28 * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
edamame22 0:29983394c6b6 29 * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
edamame22 0:29983394c6b6 30 * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
edamame22 0:29983394c6b6 31 *
edamame22 0:29983394c6b6 32 * <h2><center>&copy; COPYRIGHT 2013 STMicroelectronics</center></h2>
edamame22 0:29983394c6b6 33 */
edamame22 0:29983394c6b6 34
edamame22 0:29983394c6b6 35 /** @defgroup BlueNRGDevice
edamame22 0:29983394c6b6 36 * @brief BlueNRG BLE_API Device Adaptation
edamame22 0:29983394c6b6 37 * @{
edamame22 0:29983394c6b6 38 */
edamame22 0:29983394c6b6 39
edamame22 0:29983394c6b6 40 #ifdef YOTTA_CFG_MBED_OS
edamame22 0:29983394c6b6 41 #include "mbed-drivers/mbed.h"
edamame22 0:29983394c6b6 42 #else
edamame22 0:29983394c6b6 43 #include "mbed.h"
edamame22 0:29983394c6b6 44 #endif
edamame22 0:29983394c6b6 45 #include "BlueNRGDevice.h"
edamame22 0:29983394c6b6 46 #include "BlueNRGGap.h"
edamame22 0:29983394c6b6 47 #include "BlueNRGGattServer.h"
edamame22 0:29983394c6b6 48
edamame22 0:29983394c6b6 49 #include "btle.h"
edamame22 0:29983394c6b6 50 #include "ble_utils.h"
edamame22 0:29983394c6b6 51 #include "ble_osal.h"
edamame22 0:29983394c6b6 52
edamame22 0:29983394c6b6 53 #include "ble_debug.h"
edamame22 0:29983394c6b6 54 #include "stm32_bluenrg_ble.h"
edamame22 0:29983394c6b6 55
edamame22 0:29983394c6b6 56 extern "C" {
edamame22 0:29983394c6b6 57 #include "ble_hci.h"
edamame22 0:29983394c6b6 58 #include "bluenrg_utils.h"
edamame22 0:29983394c6b6 59 }
edamame22 0:29983394c6b6 60
edamame22 0:29983394c6b6 61 #define HEADER_SIZE 5
edamame22 0:29983394c6b6 62 #define MAX_BUFFER_SIZE 255
edamame22 0:29983394c6b6 63
edamame22 0:29983394c6b6 64 /**
edamame22 0:29983394c6b6 65 * The singleton which represents the BlueNRG transport for the BLEDevice.
edamame22 0:29983394c6b6 66 *
edamame22 0:29983394c6b6 67 * See file 'x_nucleo_idb0xa1_targets.h' for details regarding the peripheral pins used!
edamame22 0:29983394c6b6 68 */
edamame22 0:29983394c6b6 69 #include "x_nucleo_idb0xa1_targets.h"
edamame22 0:29983394c6b6 70
edamame22 0:29983394c6b6 71 BlueNRGDevice bluenrgDeviceInstance(IDB0XA1_PIN_SPI_MOSI,
edamame22 0:29983394c6b6 72 IDB0XA1_PIN_SPI_MISO,
edamame22 0:29983394c6b6 73 IDB0XA1_PIN_SPI_SCK,
edamame22 0:29983394c6b6 74 IDB0XA1_PIN_SPI_nCS,
edamame22 0:29983394c6b6 75 IDB0XA1_PIN_SPI_RESET,
edamame22 0:29983394c6b6 76 IDB0XA1_PIN_SPI_IRQ);
edamame22 0:29983394c6b6 77
edamame22 0:29983394c6b6 78 /**
edamame22 0:29983394c6b6 79 * BLE-API requires an implementation of the following function in order to
edamame22 0:29983394c6b6 80 * obtain its transport handle.
edamame22 0:29983394c6b6 81 */
edamame22 0:29983394c6b6 82 BLEInstanceBase *
edamame22 0:29983394c6b6 83 createBLEInstance(void)
edamame22 0:29983394c6b6 84 {
edamame22 0:29983394c6b6 85 return (&bluenrgDeviceInstance);
edamame22 0:29983394c6b6 86 }
edamame22 0:29983394c6b6 87
edamame22 0:29983394c6b6 88 /**************************************************************************/
edamame22 0:29983394c6b6 89 /**
edamame22 0:29983394c6b6 90 @brief Constructor
edamame22 0:29983394c6b6 91 * @param mosi mbed pin to use for MOSI line of SPI interface
edamame22 0:29983394c6b6 92 * @param miso mbed pin to use for MISO line of SPI interface
edamame22 0:29983394c6b6 93 * @param sck mbed pin to use for SCK line of SPI interface
edamame22 0:29983394c6b6 94 * @param cs mbed pin to use for not chip select line of SPI interface
edamame22 0:29983394c6b6 95 * @param rst mbed pin to use for BlueNRG reset
edamame22 0:29983394c6b6 96 * @param irq mbed pin for BlueNRG IRQ
edamame22 0:29983394c6b6 97 */
edamame22 0:29983394c6b6 98 /**************************************************************************/
edamame22 0:29983394c6b6 99 BlueNRGDevice::BlueNRGDevice(PinName mosi,
edamame22 0:29983394c6b6 100 PinName miso,
edamame22 0:29983394c6b6 101 PinName sck,
edamame22 0:29983394c6b6 102 PinName cs,
edamame22 0:29983394c6b6 103 PinName rst,
edamame22 0:29983394c6b6 104 PinName irq) :
edamame22 0:29983394c6b6 105 isInitialized(false), spi_(mosi, miso, sck), nCS_(cs), rst_(rst), irq_(irq)
edamame22 0:29983394c6b6 106 {
edamame22 0:29983394c6b6 107 // Setup the spi for 8 bit data, low clock polarity,
edamame22 0:29983394c6b6 108 // 1-edge phase, with an 8MHz clock rate
edamame22 0:29983394c6b6 109 spi_.format(8, 0);
edamame22 0:29983394c6b6 110 spi_.frequency(8000000);
edamame22 0:29983394c6b6 111
edamame22 0:29983394c6b6 112 // Deselect the BlueNRG chip by keeping its nCS signal high
edamame22 0:29983394c6b6 113 nCS_ = 1;
edamame22 0:29983394c6b6 114
edamame22 0:29983394c6b6 115 wait_us(500);
edamame22 0:29983394c6b6 116
edamame22 0:29983394c6b6 117 // Prepare communication between the host and the BlueNRG SPI interface
edamame22 0:29983394c6b6 118 HCI_Init();
edamame22 0:29983394c6b6 119
edamame22 0:29983394c6b6 120 // Set the interrupt handler for the device
edamame22 0:29983394c6b6 121 irq_.mode(PullDown); // set irq mode
edamame22 0:29983394c6b6 122 irq_.rise(&HCI_Isr);
edamame22 0:29983394c6b6 123 }
edamame22 0:29983394c6b6 124
edamame22 0:29983394c6b6 125 /**************************************************************************/
edamame22 0:29983394c6b6 126 /**
edamame22 0:29983394c6b6 127 @brief Destructor
edamame22 0:29983394c6b6 128 */
edamame22 0:29983394c6b6 129 /**************************************************************************/
edamame22 0:29983394c6b6 130 BlueNRGDevice::~BlueNRGDevice(void)
edamame22 0:29983394c6b6 131 {
edamame22 0:29983394c6b6 132 }
edamame22 0:29983394c6b6 133
edamame22 0:29983394c6b6 134 /**
edamame22 0:29983394c6b6 135 * @brief Get BlueNRG HW version in bootloader mode
edamame22 0:29983394c6b6 136 * @param hw_version The HW version is written to this parameter
edamame22 0:29983394c6b6 137 * @retval It returns BLE_STATUS_SUCCESS on success or an error code otherwise
edamame22 0:29983394c6b6 138 */
edamame22 0:29983394c6b6 139 uint8_t BlueNRGDevice::getUpdaterHardwareVersion(uint8_t *hw_version)
edamame22 0:29983394c6b6 140 {
edamame22 0:29983394c6b6 141 uint8_t status;
edamame22 0:29983394c6b6 142
edamame22 0:29983394c6b6 143 status = getBlueNRGUpdaterHWVersion(hw_version);
edamame22 0:29983394c6b6 144
edamame22 0:29983394c6b6 145 return (status);
edamame22 0:29983394c6b6 146 }
edamame22 0:29983394c6b6 147
edamame22 0:29983394c6b6 148 /**
edamame22 0:29983394c6b6 149 * @brief Flash a new firmware using internal bootloader.
edamame22 0:29983394c6b6 150 * @param fw_image Pointer to the firmware image (raw binary data,
edamame22 0:29983394c6b6 151 * little-endian).
edamame22 0:29983394c6b6 152 * @param fw_size Size of the firmware image. The firmware image size shall
edamame22 0:29983394c6b6 153 * be multiple of 4 bytes.
edamame22 0:29983394c6b6 154 * @retval int It returns BLE_STATUS_SUCCESS on success, or a number
edamame22 0:29983394c6b6 155 * not equal to 0 in case of error
edamame22 0:29983394c6b6 156 * (ACI_ERROR, UNSUPPORTED_VERSION, WRONG_IMAGE_SIZE, CRC_ERROR)
edamame22 0:29983394c6b6 157 */
edamame22 0:29983394c6b6 158 int BlueNRGDevice::updateFirmware(const uint8_t *fw_image, uint32_t fw_size)
edamame22 0:29983394c6b6 159 {
edamame22 0:29983394c6b6 160 int status = program_device(fw_image, fw_size);
edamame22 0:29983394c6b6 161
edamame22 0:29983394c6b6 162 return (status);
edamame22 0:29983394c6b6 163 }
edamame22 0:29983394c6b6 164
edamame22 0:29983394c6b6 165
edamame22 0:29983394c6b6 166 /**
edamame22 0:29983394c6b6 167 * @brief Initialises anything required to start using BLE
edamame22 0:29983394c6b6 168 * @param[in] instanceID
edamame22 0:29983394c6b6 169 * The ID of the instance to initialize.
edamame22 0:29983394c6b6 170 * @param[in] callback
edamame22 0:29983394c6b6 171 * A callback for when initialization completes for a BLE
edamame22 0:29983394c6b6 172 * instance. This is an optional parameter set to NULL when not
edamame22 0:29983394c6b6 173 * supplied.
edamame22 0:29983394c6b6 174 *
edamame22 0:29983394c6b6 175 * @return BLE_ERROR_NONE if the initialization procedure was started
edamame22 0:29983394c6b6 176 * successfully.
edamame22 0:29983394c6b6 177 */
edamame22 0:29983394c6b6 178 ble_error_t BlueNRGDevice::init(BLE::InstanceID_t instanceID, FunctionPointerWithContext<BLE::InitializationCompleteCallbackContext *> callback)
edamame22 0:29983394c6b6 179 {
edamame22 0:29983394c6b6 180 if (isInitialized) {
edamame22 0:29983394c6b6 181 BLE::InitializationCompleteCallbackContext context = {
edamame22 0:29983394c6b6 182 BLE::Instance(instanceID),
edamame22 0:29983394c6b6 183 BLE_ERROR_ALREADY_INITIALIZED
edamame22 0:29983394c6b6 184 };
edamame22 0:29983394c6b6 185 callback.call(&context);
edamame22 0:29983394c6b6 186 return BLE_ERROR_ALREADY_INITIALIZED;
edamame22 0:29983394c6b6 187 }
edamame22 0:29983394c6b6 188
edamame22 0:29983394c6b6 189 // Init the BlueNRG/BlueNRG-MS stack
edamame22 0:29983394c6b6 190 btleInit();
edamame22 0:29983394c6b6 191
edamame22 0:29983394c6b6 192 isInitialized = true;
edamame22 0:29983394c6b6 193 BLE::InitializationCompleteCallbackContext context = {
edamame22 0:29983394c6b6 194 BLE::Instance(instanceID),
edamame22 0:29983394c6b6 195 BLE_ERROR_NONE
edamame22 0:29983394c6b6 196 };
edamame22 0:29983394c6b6 197 callback.call(&context);
edamame22 0:29983394c6b6 198
edamame22 0:29983394c6b6 199 return BLE_ERROR_NONE;
edamame22 0:29983394c6b6 200 }
edamame22 0:29983394c6b6 201
edamame22 0:29983394c6b6 202
edamame22 0:29983394c6b6 203 /**
edamame22 0:29983394c6b6 204 @brief Resets the BLE HW, removing any existing services and
edamame22 0:29983394c6b6 205 characteristics
edamame22 0:29983394c6b6 206 @param[in] void
edamame22 0:29983394c6b6 207 @returns void
edamame22 0:29983394c6b6 208 */
edamame22 0:29983394c6b6 209 void BlueNRGDevice::reset(void)
edamame22 0:29983394c6b6 210 {
edamame22 0:29983394c6b6 211 wait_us(500);
edamame22 0:29983394c6b6 212
edamame22 0:29983394c6b6 213 /* Reset BlueNRG SPI interface */
edamame22 0:29983394c6b6 214 rst_ = 0;
edamame22 0:29983394c6b6 215 wait_us(5);
edamame22 0:29983394c6b6 216 rst_ = 1;
edamame22 0:29983394c6b6 217 wait_us(5);
edamame22 0:29983394c6b6 218
edamame22 0:29983394c6b6 219 /* Wait for the radio to come back up */
edamame22 0:29983394c6b6 220 wait_us(500);
edamame22 0:29983394c6b6 221
edamame22 0:29983394c6b6 222 }
edamame22 0:29983394c6b6 223
edamame22 0:29983394c6b6 224 /*!
edamame22 0:29983394c6b6 225 @brief Wait for any BLE Event like BLE Connection, Read Request etc.
edamame22 0:29983394c6b6 226 @param[in] void
edamame22 0:29983394c6b6 227 @returns char *
edamame22 0:29983394c6b6 228 */
edamame22 0:29983394c6b6 229 void BlueNRGDevice::waitForEvent(void)
edamame22 0:29983394c6b6 230 {
edamame22 0:29983394c6b6 231 bool must_return = false;
edamame22 0:29983394c6b6 232
edamame22 0:29983394c6b6 233 do {
edamame22 0:29983394c6b6 234 bluenrgDeviceInstance.processEvents();
edamame22 0:29983394c6b6 235
edamame22 0:29983394c6b6 236 if(must_return) return;
edamame22 0:29983394c6b6 237
edamame22 0:29983394c6b6 238 __WFE(); /* it is recommended that SEVONPEND in the
edamame22 0:29983394c6b6 239 System Control Register is NOT set */
edamame22 0:29983394c6b6 240 must_return = true; /* after returning from WFE we must guarantee
edamame22 0:29983394c6b6 241 that conrol is given back to main loop before next WFE */
edamame22 0:29983394c6b6 242 } while(true);
edamame22 0:29983394c6b6 243
edamame22 0:29983394c6b6 244 }
edamame22 0:29983394c6b6 245
edamame22 0:29983394c6b6 246 /*!
edamame22 0:29983394c6b6 247 @brief get GAP version
edamame22 0:29983394c6b6 248 @brief Get the BLE stack version information
edamame22 0:29983394c6b6 249 @param[in] void
edamame22 0:29983394c6b6 250 @returns char *
edamame22 0:29983394c6b6 251 @returns char *
edamame22 0:29983394c6b6 252 */
edamame22 0:29983394c6b6 253 const char *BlueNRGDevice::getVersion(void)
edamame22 0:29983394c6b6 254 {
edamame22 0:29983394c6b6 255 return getVersionString();
edamame22 0:29983394c6b6 256 }
edamame22 0:29983394c6b6 257
edamame22 0:29983394c6b6 258 /**************************************************************************/
edamame22 0:29983394c6b6 259 /*!
edamame22 0:29983394c6b6 260 @brief get reference to GAP object
edamame22 0:29983394c6b6 261 @param[in] void
edamame22 0:29983394c6b6 262 @returns Gap&
edamame22 0:29983394c6b6 263 */
edamame22 0:29983394c6b6 264 /**************************************************************************/
edamame22 0:29983394c6b6 265 Gap &BlueNRGDevice::getGap()
edamame22 0:29983394c6b6 266 {
edamame22 0:29983394c6b6 267 return BlueNRGGap::getInstance();
edamame22 0:29983394c6b6 268 }
edamame22 0:29983394c6b6 269
edamame22 0:29983394c6b6 270 const Gap &BlueNRGDevice::getGap() const
edamame22 0:29983394c6b6 271 {
edamame22 0:29983394c6b6 272 return BlueNRGGap::getInstance();
edamame22 0:29983394c6b6 273 }
edamame22 0:29983394c6b6 274
edamame22 0:29983394c6b6 275 /**************************************************************************/
edamame22 0:29983394c6b6 276 /*!
edamame22 0:29983394c6b6 277 @brief get reference to GATT server object
edamame22 0:29983394c6b6 278 @param[in] void
edamame22 0:29983394c6b6 279 @returns GattServer&
edamame22 0:29983394c6b6 280 */
edamame22 0:29983394c6b6 281 /**************************************************************************/
edamame22 0:29983394c6b6 282 GattServer &BlueNRGDevice::getGattServer()
edamame22 0:29983394c6b6 283 {
edamame22 0:29983394c6b6 284 return BlueNRGGattServer::getInstance();
edamame22 0:29983394c6b6 285 }
edamame22 0:29983394c6b6 286
edamame22 0:29983394c6b6 287 const GattServer &BlueNRGDevice::getGattServer() const
edamame22 0:29983394c6b6 288 {
edamame22 0:29983394c6b6 289 return BlueNRGGattServer::getInstance();
edamame22 0:29983394c6b6 290 }
edamame22 0:29983394c6b6 291
edamame22 0:29983394c6b6 292 /**************************************************************************/
edamame22 0:29983394c6b6 293 /*!
edamame22 0:29983394c6b6 294 @brief shut down the BLE device
edamame22 0:29983394c6b6 295 @param[out] error if any
edamame22 0:29983394c6b6 296 */
edamame22 0:29983394c6b6 297 /**************************************************************************/
edamame22 0:29983394c6b6 298 ble_error_t BlueNRGDevice::shutdown(void) {
edamame22 0:29983394c6b6 299 if (!isInitialized) {
edamame22 0:29983394c6b6 300 return BLE_ERROR_INITIALIZATION_INCOMPLETE;
edamame22 0:29983394c6b6 301 }
edamame22 0:29983394c6b6 302
edamame22 0:29983394c6b6 303 /* Reset the BlueNRG device first */
edamame22 0:29983394c6b6 304 reset();
edamame22 0:29983394c6b6 305
edamame22 0:29983394c6b6 306 /* Shutdown the BLE API and BlueNRG glue code */
edamame22 0:29983394c6b6 307 ble_error_t error;
edamame22 0:29983394c6b6 308
edamame22 0:29983394c6b6 309 /* GattServer instance */
edamame22 0:29983394c6b6 310 error = BlueNRGGattServer::getInstance().reset();
edamame22 0:29983394c6b6 311 if (error != BLE_ERROR_NONE) {
edamame22 0:29983394c6b6 312 return error;
edamame22 0:29983394c6b6 313 }
edamame22 0:29983394c6b6 314
edamame22 0:29983394c6b6 315 /* GattClient instance */
edamame22 0:29983394c6b6 316 error = BlueNRGGattClient::getInstance().reset();
edamame22 0:29983394c6b6 317 if (error != BLE_ERROR_NONE) {
edamame22 0:29983394c6b6 318 return error;
edamame22 0:29983394c6b6 319 }
edamame22 0:29983394c6b6 320
edamame22 0:29983394c6b6 321 /* Gap instance */
edamame22 0:29983394c6b6 322 error = BlueNRGGap::getInstance().reset();
edamame22 0:29983394c6b6 323 if (error != BLE_ERROR_NONE) {
edamame22 0:29983394c6b6 324 return error;
edamame22 0:29983394c6b6 325 }
edamame22 0:29983394c6b6 326
edamame22 0:29983394c6b6 327 isInitialized = false;
edamame22 0:29983394c6b6 328
edamame22 0:29983394c6b6 329 return BLE_ERROR_NONE;
edamame22 0:29983394c6b6 330
edamame22 0:29983394c6b6 331 }
edamame22 0:29983394c6b6 332
edamame22 0:29983394c6b6 333 /**
edamame22 0:29983394c6b6 334 * @brief Reads from BlueNRG SPI buffer and store data into local buffer.
edamame22 0:29983394c6b6 335 * @param buffer : Buffer where data from SPI are stored
edamame22 0:29983394c6b6 336 * @param buff_size: Buffer size
edamame22 0:29983394c6b6 337 * @retval int32_t : Number of read bytes
edamame22 0:29983394c6b6 338 */
edamame22 0:29983394c6b6 339 int32_t BlueNRGDevice::spiRead(uint8_t *buffer, uint8_t buff_size)
edamame22 0:29983394c6b6 340 {
edamame22 0:29983394c6b6 341 uint16_t byte_count;
edamame22 0:29983394c6b6 342 uint8_t len = 0;
edamame22 0:29983394c6b6 343 uint8_t char_ff = 0xff;
edamame22 0:29983394c6b6 344 volatile uint8_t read_char;
edamame22 0:29983394c6b6 345
edamame22 0:29983394c6b6 346 uint8_t i = 0;
edamame22 0:29983394c6b6 347 volatile uint8_t tmpreg;
edamame22 0:29983394c6b6 348
edamame22 0:29983394c6b6 349 uint8_t header_master[HEADER_SIZE] = {0x0b, 0x00, 0x00, 0x00, 0x00};
edamame22 0:29983394c6b6 350 uint8_t header_slave[HEADER_SIZE];
edamame22 0:29983394c6b6 351
edamame22 0:29983394c6b6 352 /* Select the chip */
edamame22 0:29983394c6b6 353 nCS_ = 0;
edamame22 0:29983394c6b6 354
edamame22 0:29983394c6b6 355 /* Read the header */
edamame22 0:29983394c6b6 356 for (i = 0; i < 5; i++)
edamame22 0:29983394c6b6 357 {
edamame22 0:29983394c6b6 358 tmpreg = spi_.write(header_master[i]);
edamame22 0:29983394c6b6 359 header_slave[i] = (uint8_t)(tmpreg);
edamame22 0:29983394c6b6 360 }
edamame22 0:29983394c6b6 361
edamame22 0:29983394c6b6 362 if (header_slave[0] == 0x02) {
edamame22 0:29983394c6b6 363 /* device is ready */
edamame22 0:29983394c6b6 364 byte_count = (header_slave[4]<<8)|header_slave[3];
edamame22 0:29983394c6b6 365
edamame22 0:29983394c6b6 366 if (byte_count > 0) {
edamame22 0:29983394c6b6 367
edamame22 0:29983394c6b6 368 /* avoid to read more data that size of the buffer */
edamame22 0:29983394c6b6 369 if (byte_count > buff_size){
edamame22 0:29983394c6b6 370 byte_count = buff_size;
edamame22 0:29983394c6b6 371 }
edamame22 0:29983394c6b6 372
edamame22 0:29983394c6b6 373 for (len = 0; len < byte_count; len++){
edamame22 0:29983394c6b6 374 read_char = spi_.write(char_ff);
edamame22 0:29983394c6b6 375 buffer[len] = read_char;
edamame22 0:29983394c6b6 376 }
edamame22 0:29983394c6b6 377 }
edamame22 0:29983394c6b6 378 }
edamame22 0:29983394c6b6 379 /* Release CS line to deselect the chip */
edamame22 0:29983394c6b6 380 nCS_ = 1;
edamame22 0:29983394c6b6 381
edamame22 0:29983394c6b6 382 // Add a small delay to give time to the BlueNRG to set the IRQ pin low
edamame22 0:29983394c6b6 383 // to avoid a useless SPI read at the end of the transaction
edamame22 0:29983394c6b6 384 for(volatile int i = 0; i < 2; i++)__NOP();
edamame22 0:29983394c6b6 385
edamame22 0:29983394c6b6 386 #ifdef PRINT_CSV_FORMAT
edamame22 0:29983394c6b6 387 if (len > 0) {
edamame22 0:29983394c6b6 388 print_csv_time();
edamame22 0:29983394c6b6 389 for (int i=0; i<len; i++) {
edamame22 0:29983394c6b6 390 PRINT_CSV(" %02x", buffer[i]);
edamame22 0:29983394c6b6 391 }
edamame22 0:29983394c6b6 392 PRINT_CSV("\n");
edamame22 0:29983394c6b6 393 }
edamame22 0:29983394c6b6 394 #endif
edamame22 0:29983394c6b6 395
edamame22 0:29983394c6b6 396 return len;
edamame22 0:29983394c6b6 397 }
edamame22 0:29983394c6b6 398
edamame22 0:29983394c6b6 399 /**
edamame22 0:29983394c6b6 400 * @brief Writes data from local buffer to SPI.
edamame22 0:29983394c6b6 401 * @param data1 : First data buffer to be written
edamame22 0:29983394c6b6 402 * @param data2 : Second data buffer to be written
edamame22 0:29983394c6b6 403 * @param Nb_bytes1: Size of first data buffer to be written
edamame22 0:29983394c6b6 404 * @param Nb_bytes2: Size of second data buffer to be written
edamame22 0:29983394c6b6 405 * @retval Number of read bytes
edamame22 0:29983394c6b6 406 */
edamame22 0:29983394c6b6 407 int32_t BlueNRGDevice::spiWrite(uint8_t* data1,
edamame22 0:29983394c6b6 408 uint8_t* data2, uint8_t Nb_bytes1, uint8_t Nb_bytes2)
edamame22 0:29983394c6b6 409 {
edamame22 0:29983394c6b6 410 int32_t result = 0;
edamame22 0:29983394c6b6 411 uint32_t i;
edamame22 0:29983394c6b6 412 volatile uint8_t tmpreg;
edamame22 0:29983394c6b6 413
edamame22 0:29983394c6b6 414 unsigned char header_master[HEADER_SIZE] = {0x0a, 0x00, 0x00, 0x00, 0x00};
edamame22 0:29983394c6b6 415 unsigned char header_slave[HEADER_SIZE] = {0xaa, 0x00, 0x00, 0x00, 0x00};
edamame22 0:29983394c6b6 416
edamame22 0:29983394c6b6 417 disable_irq();
edamame22 0:29983394c6b6 418
edamame22 0:29983394c6b6 419 /* CS reset */
edamame22 0:29983394c6b6 420 nCS_ = 0;
edamame22 0:29983394c6b6 421
edamame22 0:29983394c6b6 422 /* Exchange header */
edamame22 0:29983394c6b6 423 for (i = 0; i < 5; i++)
edamame22 0:29983394c6b6 424 {
edamame22 0:29983394c6b6 425 tmpreg = spi_.write(header_master[i]);
edamame22 0:29983394c6b6 426 header_slave[i] = tmpreg;
edamame22 0:29983394c6b6 427 }
edamame22 0:29983394c6b6 428
edamame22 0:29983394c6b6 429 if (header_slave[0] == 0x02) {
edamame22 0:29983394c6b6 430 /* SPI is ready */
edamame22 0:29983394c6b6 431 if (header_slave[1] >= (Nb_bytes1+Nb_bytes2)) {
edamame22 0:29983394c6b6 432
edamame22 0:29983394c6b6 433 /* Buffer is big enough */
edamame22 0:29983394c6b6 434 for (i = 0; i < Nb_bytes1; i++) {
edamame22 0:29983394c6b6 435 spi_.write(*(data1 + i));
edamame22 0:29983394c6b6 436 }
edamame22 0:29983394c6b6 437 for (i = 0; i < Nb_bytes2; i++) {
edamame22 0:29983394c6b6 438 spi_.write(*(data2 + i));
edamame22 0:29983394c6b6 439 }
edamame22 0:29983394c6b6 440 } else {
edamame22 0:29983394c6b6 441 /* Buffer is too small */
edamame22 0:29983394c6b6 442 result = -2;
edamame22 0:29983394c6b6 443 }
edamame22 0:29983394c6b6 444 } else {
edamame22 0:29983394c6b6 445 /* SPI is not ready */
edamame22 0:29983394c6b6 446 result = -1;
edamame22 0:29983394c6b6 447 }
edamame22 0:29983394c6b6 448
edamame22 0:29983394c6b6 449 /* Release CS line */
edamame22 0:29983394c6b6 450 //HAL_GPIO_WritePin(BNRG_SPI_CS_PORT, BNRG_SPI_CS_PIN, GPIO_PIN_SET);
edamame22 0:29983394c6b6 451 nCS_ = 1;
edamame22 0:29983394c6b6 452
edamame22 0:29983394c6b6 453 enable_irq();
edamame22 0:29983394c6b6 454
edamame22 0:29983394c6b6 455 return result;
edamame22 0:29983394c6b6 456 }
edamame22 0:29983394c6b6 457
edamame22 0:29983394c6b6 458 bool BlueNRGDevice::dataPresent()
edamame22 0:29983394c6b6 459 {
edamame22 0:29983394c6b6 460 return (irq_ == 1);
edamame22 0:29983394c6b6 461 }
edamame22 0:29983394c6b6 462
edamame22 0:29983394c6b6 463 void BlueNRGDevice::disable_irq()
edamame22 0:29983394c6b6 464 {
edamame22 0:29983394c6b6 465 irq_.disable_irq();
edamame22 0:29983394c6b6 466 }
edamame22 0:29983394c6b6 467
edamame22 0:29983394c6b6 468 void BlueNRGDevice::enable_irq()
edamame22 0:29983394c6b6 469 {
edamame22 0:29983394c6b6 470 irq_.enable_irq();
edamame22 0:29983394c6b6 471 }
edamame22 0:29983394c6b6 472
edamame22 0:29983394c6b6 473 void BlueNRGDevice::processEvents() {
edamame22 0:29983394c6b6 474 btle_handler();
edamame22 0:29983394c6b6 475 }