Devchannel Team / X_NUCLEO_IDB0XA1

HW layer for the Nucleo board, it only work with old BLE_API

Dependents:   Hello_BLE F446RE-BLE

Fork of X_NUCLEO_IDB0XA1 by ST

BlueNRGDevice.cpp@93:728699ac5613, 2015-07-23 (annotated)

Committer:
Wolfgang Betz
Date:
Thu Jul 23 14:48:36 2015 +0200
Revision:
93:728699ac5613
Parent:
92:709d44dc869a
Parent:
86:81b17a629630
Child:
95:e1f7ce04e71b
Merge branch 'master' of hg::http://wobetz@developer.mbed.org/teams/ST-Expansion-SW-Team/code/X_NUCLEO_IDB0XA1 into idb0xa1-split

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Silvio Lucio Oliva 70:d20d30f59b1c 1 /* mbed Microcontroller Library
Silvio Lucio Oliva 70:d20d30f59b1c 2 * Copyright (c) 2006-2013 ARM Limited
Silvio Lucio Oliva 70:d20d30f59b1c 3 *
Silvio Lucio Oliva 70:d20d30f59b1c 4 * Licensed under the Apache License, Version 2.0 (the "License");
Silvio Lucio Oliva 70:d20d30f59b1c 5 * you may not use this file except in compliance with the License.
Silvio Lucio Oliva 70:d20d30f59b1c 6 * You may obtain a copy of the License at
Silvio Lucio Oliva 70:d20d30f59b1c 7 *
Silvio Lucio Oliva 70:d20d30f59b1c 8 * http://www.apache.org/licenses/LICENSE-2.0
Silvio Lucio Oliva 70:d20d30f59b1c 9 *
Silvio Lucio Oliva 70:d20d30f59b1c 10 * Unless required by applicable law or agreed to in writing, software
Silvio Lucio Oliva 70:d20d30f59b1c 11 * distributed under the License is distributed on an "AS IS" BASIS,
Silvio Lucio Oliva 70:d20d30f59b1c 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
Silvio Lucio Oliva 70:d20d30f59b1c 13 * See the License for the specific language governing permissions and
Silvio Lucio Oliva 70:d20d30f59b1c 14 * limitations under the License.
Silvio Lucio Oliva 70:d20d30f59b1c 15 */
Silvio Lucio Oliva 70:d20d30f59b1c 16
Silvio Lucio Oliva 70:d20d30f59b1c 17 /**
Silvio Lucio Oliva 70:d20d30f59b1c 18 ******************************************************************************
Wolfgang Betz 91:97c0c21046b4 19 * @file BlueNRGDevice.cpp
Silvio Lucio Oliva 70:d20d30f59b1c 20 * @author STMicroelectronics
Silvio Lucio Oliva 70:d20d30f59b1c 21 * @brief Implementation of BLEDeviceInstanceBase
Silvio Lucio Oliva 70:d20d30f59b1c 22 ******************************************************************************
Silvio Lucio Oliva 70:d20d30f59b1c 23 * @copy
Silvio Lucio Oliva 70:d20d30f59b1c 24 *
Silvio Lucio Oliva 70:d20d30f59b1c 25 * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
Silvio Lucio Oliva 70:d20d30f59b1c 26 * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
Silvio Lucio Oliva 70:d20d30f59b1c 27 * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
Silvio Lucio Oliva 70:d20d30f59b1c 28 * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
Silvio Lucio Oliva 70:d20d30f59b1c 29 * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
Silvio Lucio Oliva 70:d20d30f59b1c 30 * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
Silvio Lucio Oliva 70:d20d30f59b1c 31 *
Silvio Lucio Oliva 70:d20d30f59b1c 32 * <h2><center>&copy; COPYRIGHT 2013 STMicroelectronics</center></h2>
Wolfgang Betz 91:97c0c21046b4 33 */
Wolfgang Betz 91:97c0c21046b4 34
Silvio Lucio Oliva 70:d20d30f59b1c 35 /** @defgroup BlueNRGDevice
Silvio Lucio Oliva 70:d20d30f59b1c 36 * @brief BlueNRG BLE_API Device Adaptation
Silvio Lucio Oliva 70:d20d30f59b1c 37 * @{
Silvio Lucio Oliva 70:d20d30f59b1c 38 */
Wolfgang Betz 91:97c0c21046b4 39
Silvio Lucio Oliva 70:d20d30f59b1c 40 #include "mbed.h"
Silvio Lucio Oliva 70:d20d30f59b1c 41 #include "BlueNRGDevice.h"
Silvio Lucio Oliva 70:d20d30f59b1c 42 #include "BlueNRGGap.h"
Silvio Lucio Oliva 70:d20d30f59b1c 43 #include "BlueNRGGattServer.h"
Silvio Lucio Oliva 70:d20d30f59b1c 44
Silvio Lucio Oliva 70:d20d30f59b1c 45 #include "btle.h"
Silvio Lucio Oliva 70:d20d30f59b1c 46 #include "Utils.h"
Silvio Lucio Oliva 70:d20d30f59b1c 47 #include "osal.h"
Silvio Lucio Oliva 70:d20d30f59b1c 48
Antonio Vilei 74:c4526f8284d5 49 extern "C" {
Wolfgang Betz 91:97c0c21046b4 50 #include "hci.h"
Antonio Vilei 74:c4526f8284d5 51 }
Antonio Vilei 74:c4526f8284d5 52
Antonio Vilei 74:c4526f8284d5 53 #define HEADER_SIZE 5
Antonio Vilei 74:c4526f8284d5 54 #define MAX_BUFFER_SIZE 255
Antonio Vilei 74:c4526f8284d5 55
Silvio Lucio Oliva 70:d20d30f59b1c 56 /**
Silvio Lucio Oliva 70:d20d30f59b1c 57 * The singleton which represents the BlueNRG transport for the BLEDevice.
avilei 86:81b17a629630 58 * FIXME: find a better way to create the BlueNRG device instance so that
avilei 86:81b17a629630 59 * the pin names can be chosen by the users of this class
avilei 86:81b17a629630 60 *
avilei 86:81b17a629630 61 * This is using Arduino pins as follows:
avilei 86:81b17a629630 62 * D11: MOSI line of SPI interface
avilei 86:81b17a629630 63 * D12: MISO line of SPI interface
avilei 86:81b17a629630 64 * D3 : SCK line of SPI interface
avilei 86:81b17a629630 65 * A1 : nCS line of SPI interface
avilei 86:81b17a629630 66 * D7 : BlueNRG reset
avilei 86:81b17a629630 67 * A0 : BlueNRG IRQ pin
Silvio Lucio Oliva 70:d20d30f59b1c 68 */
avilei 86:81b17a629630 69 BlueNRGDevice bluenrgDeviceInstance(D11, D12, D3, A1, D7, A0);
Silvio Lucio Oliva 70:d20d30f59b1c 70
Silvio Lucio Oliva 70:d20d30f59b1c 71 /**
Silvio Lucio Oliva 70:d20d30f59b1c 72 * BLE-API requires an implementation of the following function in order to
Silvio Lucio Oliva 70:d20d30f59b1c 73 * obtain its transport handle.
Silvio Lucio Oliva 70:d20d30f59b1c 74 */
Andrea Palmieri 77:332b416123b4 75 BLEInstanceBase *
Andrea Palmieri 77:332b416123b4 76 createBLEInstance(void)
Silvio Lucio Oliva 70:d20d30f59b1c 77 {
Antonio Vilei 74:c4526f8284d5 78 return (&bluenrgDeviceInstance);
Silvio Lucio Oliva 70:d20d30f59b1c 79 }
Silvio Lucio Oliva 70:d20d30f59b1c 80
Silvio Lucio Oliva 70:d20d30f59b1c 81 /**************************************************************************/
Silvio Lucio Oliva 70:d20d30f59b1c 82 /**
Silvio Lucio Oliva 70:d20d30f59b1c 83 @brief Constructor
avilei 86:81b17a629630 84 * @param mosi mbed pin to use for MOSI line of SPI interface
avilei 86:81b17a629630 85 * @param miso mbed pin to use for MISO line of SPI interface
avilei 86:81b17a629630 86 * @param sck mbed pin to use for SCK line of SPI interface
avilei 86:81b17a629630 87 * @param cs mbed pin to use for not chip select line of SPI interface
avilei 86:81b17a629630 88 * @param rst mbed pin to use for BlueNRG reset
Antonio Vilei 74:c4526f8284d5 89 * @param irq mbed pin for BlueNRG IRQ
Silvio Lucio Oliva 70:d20d30f59b1c 90 */
Silvio Lucio Oliva 70:d20d30f59b1c 91 /**************************************************************************/
Antonio Vilei 74:c4526f8284d5 92 BlueNRGDevice::BlueNRGDevice(PinName mosi,
Antonio Vilei 74:c4526f8284d5 93 PinName miso,
Antonio Vilei 74:c4526f8284d5 94 PinName sck,
Antonio Vilei 74:c4526f8284d5 95 PinName cs,
Antonio Vilei 74:c4526f8284d5 96 PinName rst,
Antonio Vilei 74:c4526f8284d5 97 PinName irq) : spi_(mosi, miso, sck), nCS_(cs), rst_(rst), irq_(irq)
Silvio Lucio Oliva 70:d20d30f59b1c 98 {
Silvio Lucio Oliva 70:d20d30f59b1c 99 isInitialized = false;
Wolfgang Betz 91:97c0c21046b4 100
Antonio Vilei 74:c4526f8284d5 101 // Setup the spi for 8 bit data, low clock polarity,
Antonio Vilei 74:c4526f8284d5 102 // 1-edge phase, with an 8MHz clock rate
Antonio Vilei 74:c4526f8284d5 103 spi_.format(8, 0);
Antonio Vilei 74:c4526f8284d5 104 spi_.frequency(8000000);
Wolfgang Betz 91:97c0c21046b4 105
Antonio Vilei 74:c4526f8284d5 106 // Deselect the BlueNRG chip by keeping its nCS signal high
Antonio Vilei 74:c4526f8284d5 107 nCS_ = 1;
Antonio Vilei 74:c4526f8284d5 108
Antonio Vilei 74:c4526f8284d5 109 wait_us(500);
Silvio Lucio Oliva 70:d20d30f59b1c 110 }
Silvio Lucio Oliva 70:d20d30f59b1c 111
Silvio Lucio Oliva 70:d20d30f59b1c 112 /**************************************************************************/
Silvio Lucio Oliva 70:d20d30f59b1c 113 /**
Silvio Lucio Oliva 70:d20d30f59b1c 114 @brief Destructor
Silvio Lucio Oliva 70:d20d30f59b1c 115 */
Silvio Lucio Oliva 70:d20d30f59b1c 116 /**************************************************************************/
Silvio Lucio Oliva 70:d20d30f59b1c 117 BlueNRGDevice::~BlueNRGDevice(void)
Silvio Lucio Oliva 70:d20d30f59b1c 118 {
Silvio Lucio Oliva 70:d20d30f59b1c 119 }
Silvio Lucio Oliva 70:d20d30f59b1c 120
Silvio Lucio Oliva 70:d20d30f59b1c 121
Silvio Lucio Oliva 70:d20d30f59b1c 122 /**
Silvio Lucio Oliva 70:d20d30f59b1c 123 @brief Initialises anything required to start using BLE
Silvio Lucio Oliva 70:d20d30f59b1c 124 @param[in] void
Silvio Lucio Oliva 70:d20d30f59b1c 125 @returns ble_error_t
Silvio Lucio Oliva 70:d20d30f59b1c 126 */
Silvio Lucio Oliva 70:d20d30f59b1c 127 ble_error_t BlueNRGDevice::init(void)
Silvio Lucio Oliva 70:d20d30f59b1c 128 {
Antonio Vilei 74:c4526f8284d5 129 // Set the interrupt handler for the device
Antonio Vilei 74:c4526f8284d5 130 irq_.rise(&HCI_Isr);
Antonio Vilei 74:c4526f8284d5 131
Silvio Lucio Oliva 70:d20d30f59b1c 132 /* ToDo: Clear memory contents, reset the SD, etc. */
Antonio Vilei 74:c4526f8284d5 133 btle_init(BlueNRGGap::getInstance().getIsSetAddress());
Wolfgang Betz 91:97c0c21046b4 134
Silvio Lucio Oliva 70:d20d30f59b1c 135 isInitialized = true;
Silvio Lucio Oliva 70:d20d30f59b1c 136
Silvio Lucio Oliva 70:d20d30f59b1c 137 return BLE_ERROR_NONE;
Silvio Lucio Oliva 70:d20d30f59b1c 138 }
Silvio Lucio Oliva 70:d20d30f59b1c 139
Silvio Lucio Oliva 70:d20d30f59b1c 140
Silvio Lucio Oliva 70:d20d30f59b1c 141 /**
Silvio Lucio Oliva 70:d20d30f59b1c 142 @brief Resets the BLE HW, removing any existing services and
Silvio Lucio Oliva 70:d20d30f59b1c 143 characteristics
Silvio Lucio Oliva 70:d20d30f59b1c 144 @param[in] void
Silvio Lucio Oliva 70:d20d30f59b1c 145 @returns ble_error_t
Silvio Lucio Oliva 70:d20d30f59b1c 146 */
Silvio Lucio Oliva 70:d20d30f59b1c 147 ble_error_t BlueNRGDevice::reset(void)
Silvio Lucio Oliva 70:d20d30f59b1c 148 {
Antonio Vilei 74:c4526f8284d5 149 wait_us(500);
Silvio Lucio Oliva 70:d20d30f59b1c 150
Silvio Lucio Oliva 70:d20d30f59b1c 151 /* Reset BlueNRG SPI interface */
Wolfgang Betz 91:97c0c21046b4 152 rst_ = 0;
Wolfgang Betz 91:97c0c21046b4 153 wait_us(5);
Wolfgang Betz 91:97c0c21046b4 154 rst_ = 1;
Wolfgang Betz 91:97c0c21046b4 155 wait_us(5);
Silvio Lucio Oliva 70:d20d30f59b1c 156
Silvio Lucio Oliva 70:d20d30f59b1c 157 /* Wait for the radio to come back up */
Antonio Vilei 74:c4526f8284d5 158 wait_us(500);
Silvio Lucio Oliva 70:d20d30f59b1c 159
Silvio Lucio Oliva 70:d20d30f59b1c 160 isInitialized = false;
Silvio Lucio Oliva 70:d20d30f59b1c 161
Silvio Lucio Oliva 70:d20d30f59b1c 162 return BLE_ERROR_NONE;
Silvio Lucio Oliva 70:d20d30f59b1c 163 }
Silvio Lucio Oliva 70:d20d30f59b1c 164
Silvio Lucio Oliva 70:d20d30f59b1c 165
Silvio Lucio Oliva 70:d20d30f59b1c 166 /*!
Wolfgang Betz 91:97c0c21046b4 167 @brief Wait for any BLE Event like BLE Connection, Read Request etc.
Silvio Lucio Oliva 70:d20d30f59b1c 168 @param[in] void
Wolfgang Betz 91:97c0c21046b4 169 @returns char *
Silvio Lucio Oliva 70:d20d30f59b1c 170 */
Silvio Lucio Oliva 70:d20d30f59b1c 171 void BlueNRGDevice::waitForEvent(void)
Silvio Lucio Oliva 70:d20d30f59b1c 172 {
Wolfgang Betz 91:97c0c21046b4 173 bool must_return = false;
Wolfgang Betz 91:97c0c21046b4 174
Wolfgang Betz 91:97c0c21046b4 175 do {
Wolfgang Betz 91:97c0c21046b4 176 HCI_Process();
Wolfgang Betz 91:97c0c21046b4 177
Wolfgang Betz 91:97c0c21046b4 178 if(must_return) return;
Wolfgang Betz 91:97c0c21046b4 179
Wolfgang Betz 91:97c0c21046b4 180 __WFE(); /* it is recommended that SEVONPEND in the
Wolfgang Betz 91:97c0c21046b4 181 System Control Register is NOT set */
Wolfgang Betz 91:97c0c21046b4 182 must_return = true; /* after returning from WFE we must guarantee
Wolfgang Betz 91:97c0c21046b4 183 that conrol is given back to main loop before next WFE */
Wolfgang Betz 91:97c0c21046b4 184 } while(true);
Silvio Lucio Oliva 70:d20d30f59b1c 185 }
Silvio Lucio Oliva 70:d20d30f59b1c 186
Silvio Lucio Oliva 70:d20d30f59b1c 187
Silvio Lucio Oliva 70:d20d30f59b1c 188 /*!
Silvio Lucio Oliva 70:d20d30f59b1c 189 @brief get GAP version
Silvio Lucio Oliva 70:d20d30f59b1c 190 @param[in] void
Silvio Lucio Oliva 70:d20d30f59b1c 191 @returns char *
Silvio Lucio Oliva 70:d20d30f59b1c 192 */
Silvio Lucio Oliva 70:d20d30f59b1c 193 const char *BlueNRGDevice::getVersion(void)
Silvio Lucio Oliva 70:d20d30f59b1c 194 {
Silvio Lucio Oliva 70:d20d30f59b1c 195 char *version = new char[6];
Silvio Lucio Oliva 70:d20d30f59b1c 196 memcpy((void *)version, "1.0.0", 5);
Silvio Lucio Oliva 70:d20d30f59b1c 197 return version;
Silvio Lucio Oliva 70:d20d30f59b1c 198 }
Silvio Lucio Oliva 70:d20d30f59b1c 199
Silvio Lucio Oliva 70:d20d30f59b1c 200 /**************************************************************************/
Silvio Lucio Oliva 70:d20d30f59b1c 201 /*!
Silvio Lucio Oliva 70:d20d30f59b1c 202 @brief get init state
Silvio Lucio Oliva 70:d20d30f59b1c 203 @param[in] void
Wolfgang Betz 91:97c0c21046b4 204 @returns bool
Silvio Lucio Oliva 70:d20d30f59b1c 205 */
Silvio Lucio Oliva 70:d20d30f59b1c 206 /**************************************************************************/
Silvio Lucio Oliva 70:d20d30f59b1c 207 bool BlueNRGDevice::getIsInitialized(void)
Silvio Lucio Oliva 70:d20d30f59b1c 208 {
Silvio Lucio Oliva 70:d20d30f59b1c 209 return isInitialized;
Silvio Lucio Oliva 70:d20d30f59b1c 210 }
Silvio Lucio Oliva 70:d20d30f59b1c 211
Silvio Lucio Oliva 70:d20d30f59b1c 212 /**************************************************************************/
Silvio Lucio Oliva 70:d20d30f59b1c 213 /*!
Silvio Lucio Oliva 70:d20d30f59b1c 214 @brief get reference to GAP object
Silvio Lucio Oliva 70:d20d30f59b1c 215 @param[in] void
Wolfgang Betz 91:97c0c21046b4 216 @returns Gap&
Silvio Lucio Oliva 70:d20d30f59b1c 217 */
Silvio Lucio Oliva 70:d20d30f59b1c 218 /**************************************************************************/
Silvio Lucio Oliva 70:d20d30f59b1c 219 Gap &BlueNRGDevice::getGap()
Silvio Lucio Oliva 70:d20d30f59b1c 220 {
Silvio Lucio Oliva 70:d20d30f59b1c 221 return BlueNRGGap::getInstance();
Silvio Lucio Oliva 70:d20d30f59b1c 222 }
Silvio Lucio Oliva 70:d20d30f59b1c 223
Andrea Palmieri 77:332b416123b4 224 const Gap &BlueNRGDevice::getGap() const
Andrea Palmieri 77:332b416123b4 225 {
Andrea Palmieri 77:332b416123b4 226 return BlueNRGGap::getInstance();
Andrea Palmieri 77:332b416123b4 227 }
Andrea Palmieri 77:332b416123b4 228
Silvio Lucio Oliva 70:d20d30f59b1c 229 /**************************************************************************/
Silvio Lucio Oliva 70:d20d30f59b1c 230 /*!
Silvio Lucio Oliva 70:d20d30f59b1c 231 @brief get reference to GATT server object
Silvio Lucio Oliva 70:d20d30f59b1c 232 @param[in] void
Wolfgang Betz 91:97c0c21046b4 233 @returns GattServer&
Silvio Lucio Oliva 70:d20d30f59b1c 234 */
Silvio Lucio Oliva 70:d20d30f59b1c 235 /**************************************************************************/
Silvio Lucio Oliva 70:d20d30f59b1c 236 GattServer &BlueNRGDevice::getGattServer()
Silvio Lucio Oliva 70:d20d30f59b1c 237 {
Silvio Lucio Oliva 70:d20d30f59b1c 238 return BlueNRGGattServer::getInstance();
Silvio Lucio Oliva 70:d20d30f59b1c 239 }
Silvio Lucio Oliva 70:d20d30f59b1c 240
Andrea Palmieri 77:332b416123b4 241 const GattServer &BlueNRGDevice::getGattServer() const
Silvio Lucio Oliva 70:d20d30f59b1c 242 {
Andrea Palmieri 77:332b416123b4 243 return BlueNRGGattServer::getInstance();
Silvio Lucio Oliva 70:d20d30f59b1c 244 }
Silvio Lucio Oliva 70:d20d30f59b1c 245
Silvio Lucio Oliva 70:d20d30f59b1c 246 /**************************************************************************/
Silvio Lucio Oliva 70:d20d30f59b1c 247 /*!
Silvio Lucio Oliva 70:d20d30f59b1c 248 @brief shut down the the BLE device
Silvio Lucio Oliva 70:d20d30f59b1c 249 @param[out] error if any
Silvio Lucio Oliva 70:d20d30f59b1c 250 */
Silvio Lucio Oliva 70:d20d30f59b1c 251 /**************************************************************************/
Silvio Lucio Oliva 70:d20d30f59b1c 252 ble_error_t BlueNRGDevice::shutdown(void) {
Silvio Lucio Oliva 70:d20d30f59b1c 253 return reset();
Silvio Lucio Oliva 70:d20d30f59b1c 254 }
Wolfgang Betz 91:97c0c21046b4 255
Antonio Vilei 74:c4526f8284d5 256 /**
Antonio Vilei 74:c4526f8284d5 257 * @brief Reads from BlueNRG SPI buffer and store data into local buffer.
Antonio Vilei 74:c4526f8284d5 258 * @param buffer : Buffer where data from SPI are stored
Antonio Vilei 74:c4526f8284d5 259 * @param buff_size: Buffer size
Antonio Vilei 74:c4526f8284d5 260 * @retval int32_t : Number of read bytes
Antonio Vilei 74:c4526f8284d5 261 */
Antonio Vilei 74:c4526f8284d5 262 int32_t BlueNRGDevice::spiRead(uint8_t *buffer, uint8_t buff_size)
Antonio Vilei 74:c4526f8284d5 263 {
Wolfgang Betz 91:97c0c21046b4 264 uint16_t byte_count;
Wolfgang Betz 91:97c0c21046b4 265 uint8_t len = 0;
Wolfgang Betz 91:97c0c21046b4 266 uint8_t char_ff = 0xff;
Wolfgang Betz 91:97c0c21046b4 267 volatile uint8_t read_char;
Wolfgang Betz 91:97c0c21046b4 268
Wolfgang Betz 91:97c0c21046b4 269 uint8_t i = 0;
Wolfgang Betz 91:97c0c21046b4 270 volatile uint8_t tmpreg;
Wolfgang Betz 91:97c0c21046b4 271
Wolfgang Betz 91:97c0c21046b4 272 uint8_t header_master[HEADER_SIZE] = {0x0b, 0x00, 0x00, 0x00, 0x00};
Wolfgang Betz 91:97c0c21046b4 273 uint8_t header_slave[HEADER_SIZE];
Antonio Vilei 74:c4526f8284d5 274
Wolfgang Betz 91:97c0c21046b4 275 /* Select the chip */
Wolfgang Betz 91:97c0c21046b4 276 nCS_ = 0;
Wolfgang Betz 91:97c0c21046b4 277
Wolfgang Betz 91:97c0c21046b4 278 /* Read the header */
Wolfgang Betz 91:97c0c21046b4 279 for (i = 0; i < 5; i++)
Wolfgang Betz 91:97c0c21046b4 280 {
Wolfgang Betz 91:97c0c21046b4 281 tmpreg = spi_.write(header_master[i]);
Wolfgang Betz 91:97c0c21046b4 282 header_slave[i] = (uint8_t)(tmpreg);
Wolfgang Betz 91:97c0c21046b4 283 }
Wolfgang Betz 91:97c0c21046b4 284
Wolfgang Betz 91:97c0c21046b4 285 if (header_slave[0] == 0x02) {
Wolfgang Betz 91:97c0c21046b4 286 /* device is ready */
Wolfgang Betz 91:97c0c21046b4 287 byte_count = (header_slave[4]<<8)|header_slave[3];
Wolfgang Betz 91:97c0c21046b4 288
Wolfgang Betz 91:97c0c21046b4 289 if (byte_count > 0) {
Antonio Vilei 74:c4526f8284d5 290
Wolfgang Betz 91:97c0c21046b4 291 /* avoid to read more data that size of the buffer */
Wolfgang Betz 91:97c0c21046b4 292 if (byte_count > buff_size){
Wolfgang Betz 91:97c0c21046b4 293 byte_count = buff_size;
Wolfgang Betz 91:97c0c21046b4 294 }
Wolfgang Betz 91:97c0c21046b4 295
Wolfgang Betz 91:97c0c21046b4 296 for (len = 0; len < byte_count; len++){
Wolfgang Betz 91:97c0c21046b4 297 read_char = spi_.write(char_ff);
Wolfgang Betz 91:97c0c21046b4 298 buffer[len] = read_char;
Wolfgang Betz 91:97c0c21046b4 299 }
Wolfgang Betz 91:97c0c21046b4 300 }
Wolfgang Betz 91:97c0c21046b4 301 }
Wolfgang Betz 91:97c0c21046b4 302 /* Release CS line to deselect the chip */
Wolfgang Betz 91:97c0c21046b4 303 nCS_ = 1;
Wolfgang Betz 91:97c0c21046b4 304
Wolfgang Betz 91:97c0c21046b4 305 // Add a small delay to give time to the BlueNRG to set the IRQ pin low
Wolfgang Betz 91:97c0c21046b4 306 // to avoid a useless SPI read at the end of the transaction
Wolfgang Betz 91:97c0c21046b4 307 for(volatile int i = 0; i < 2; i++)__NOP();
Wolfgang Betz 91:97c0c21046b4 308
Antonio Vilei 74:c4526f8284d5 309 #ifdef PRINT_CSV_FORMAT
Wolfgang Betz 91:97c0c21046b4 310 if (len > 0) {
Wolfgang Betz 91:97c0c21046b4 311 // print_csv_time();
Wolfgang Betz 91:97c0c21046b4 312 for (int i=0; i<len; i++) {
Wolfgang Betz 91:97c0c21046b4 313 PRINT_CSV(" %02x", buffer[i]);
Wolfgang Betz 91:97c0c21046b4 314 }
Wolfgang Betz 91:97c0c21046b4 315 PRINT_CSV("\n");
Antonio Vilei 74:c4526f8284d5 316 }
Antonio Vilei 74:c4526f8284d5 317 #endif
Wolfgang Betz 91:97c0c21046b4 318
Wolfgang Betz 91:97c0c21046b4 319 return len;
Antonio Vilei 74:c4526f8284d5 320 }
Antonio Vilei 74:c4526f8284d5 321
Antonio Vilei 74:c4526f8284d5 322 /**
Antonio Vilei 74:c4526f8284d5 323 * @brief Writes data from local buffer to SPI.
Antonio Vilei 74:c4526f8284d5 324 * @param data1 : First data buffer to be written
Antonio Vilei 74:c4526f8284d5 325 * @param data2 : Second data buffer to be written
Antonio Vilei 74:c4526f8284d5 326 * @param Nb_bytes1: Size of first data buffer to be written
Antonio Vilei 74:c4526f8284d5 327 * @param Nb_bytes2: Size of second data buffer to be written
Antonio Vilei 74:c4526f8284d5 328 * @retval Number of read bytes
Antonio Vilei 74:c4526f8284d5 329 */
Antonio Vilei 74:c4526f8284d5 330 int32_t BlueNRGDevice::spiWrite(uint8_t* data1,
Wolfgang Betz 91:97c0c21046b4 331 uint8_t* data2, uint8_t Nb_bytes1, uint8_t Nb_bytes2)
Antonio Vilei 74:c4526f8284d5 332 {
Wolfgang Betz 91:97c0c21046b4 333 int32_t result = 0;
Wolfgang Betz 91:97c0c21046b4 334
Wolfgang Betz 91:97c0c21046b4 335 uint32_t i;
Wolfgang Betz 91:97c0c21046b4 336 volatile uint8_t tmpreg;
Antonio Vilei 74:c4526f8284d5 337
Wolfgang Betz 91:97c0c21046b4 338 unsigned char header_master[HEADER_SIZE] = {0x0a, 0x00, 0x00, 0x00, 0x00};
Wolfgang Betz 91:97c0c21046b4 339 unsigned char header_slave[HEADER_SIZE] = {0xaa, 0x00, 0x00, 0x00, 0x00};
Wolfgang Betz 91:97c0c21046b4 340
Wolfgang Betz 91:97c0c21046b4 341 //unsigned char read_char_buf[MAX_BUFFER_SIZE];
Wolfgang Betz 91:97c0c21046b4 342
Wolfgang Betz 91:97c0c21046b4 343 disable_irq();
Antonio Vilei 74:c4526f8284d5 344
Wolfgang Betz 91:97c0c21046b4 345 /* CS reset */
Wolfgang Betz 91:97c0c21046b4 346 nCS_ = 0;
Antonio Vilei 74:c4526f8284d5 347
Wolfgang Betz 91:97c0c21046b4 348 /* Exchange header */
Wolfgang Betz 91:97c0c21046b4 349 for (i = 0; i < 5; i++)
Wolfgang Betz 91:97c0c21046b4 350 {
Wolfgang Betz 91:97c0c21046b4 351 tmpreg = spi_.write(header_master[i]);
Wolfgang Betz 91:97c0c21046b4 352 header_slave[i] = tmpreg;
Wolfgang Betz 91:97c0c21046b4 353 }
Antonio Vilei 74:c4526f8284d5 354
Wolfgang Betz 91:97c0c21046b4 355 if (header_slave[0] == 0x02) {
Wolfgang Betz 91:97c0c21046b4 356 /* SPI is ready */
Wolfgang Betz 91:97c0c21046b4 357 if (header_slave[1] >= (Nb_bytes1+Nb_bytes2)) {
Wolfgang Betz 91:97c0c21046b4 358
Wolfgang Betz 91:97c0c21046b4 359 /* Buffer is big enough */
Wolfgang Betz 91:97c0c21046b4 360 for (i = 0; i < Nb_bytes1; i++) {
Wolfgang Betz 92:709d44dc869a 361 spi_.write(*(data1 + i));
Wolfgang Betz 91:97c0c21046b4 362 }
Wolfgang Betz 91:97c0c21046b4 363 for (i = 0; i < Nb_bytes2; i++) {
Wolfgang Betz 92:709d44dc869a 364 spi_.write(*(data2 + i));
Wolfgang Betz 91:97c0c21046b4 365 }
Wolfgang Betz 91:97c0c21046b4 366 } else {
Wolfgang Betz 91:97c0c21046b4 367 /* Buffer is too small */
Wolfgang Betz 91:97c0c21046b4 368 result = -2;
Wolfgang Betz 91:97c0c21046b4 369 }
Antonio Vilei 74:c4526f8284d5 370 } else {
Wolfgang Betz 91:97c0c21046b4 371 /* SPI is not ready */
Wolfgang Betz 91:97c0c21046b4 372 result = -1;
Antonio Vilei 74:c4526f8284d5 373 }
Antonio Vilei 74:c4526f8284d5 374
Wolfgang Betz 91:97c0c21046b4 375 /* Release CS line */
Wolfgang Betz 91:97c0c21046b4 376 //HAL_GPIO_WritePin(BNRG_SPI_CS_PORT, BNRG_SPI_CS_PIN, GPIO_PIN_SET);
Wolfgang Betz 91:97c0c21046b4 377 nCS_ = 1;
Wolfgang Betz 91:97c0c21046b4 378
Wolfgang Betz 91:97c0c21046b4 379 enable_irq();
Antonio Vilei 74:c4526f8284d5 380
Wolfgang Betz 91:97c0c21046b4 381 return result;
Antonio Vilei 74:c4526f8284d5 382 }
Antonio Vilei 74:c4526f8284d5 383
Antonio Vilei 74:c4526f8284d5 384 bool BlueNRGDevice::dataPresent()
Antonio Vilei 74:c4526f8284d5 385 {
Antonio Vilei 74:c4526f8284d5 386 return (irq_ == 1);
Antonio Vilei 74:c4526f8284d5 387 }
Antonio Vilei 74:c4526f8284d5 388
Antonio Vilei 74:c4526f8284d5 389 void BlueNRGDevice::disable_irq()
Antonio Vilei 74:c4526f8284d5 390 {
Antonio Vilei 74:c4526f8284d5 391 irq_.disable_irq();
Antonio Vilei 74:c4526f8284d5 392 }
Antonio Vilei 74:c4526f8284d5 393
Antonio Vilei 74:c4526f8284d5 394 void BlueNRGDevice::enable_irq()
Antonio Vilei 74:c4526f8284d5 395 {
Antonio Vilei 74:c4526f8284d5 396 irq_.enable_irq();
Antonio Vilei 74:c4526f8284d5 397 }