ST / X_NUCLEO_IDB0XA1

BLE_API wrapper library for STMicroelectronics' BlueNRG Bluetooth Low Energy expansion board shield (Component)

Dependents:   Nucleo_Zumo_BLE_IDB04A1 contest_IOT5 contest_IOT6 contest_IOT_10 ... more

Fork of X_NUCLEO_IDB0XA1 by ST Expansion SW Team

Arduino Connector Compatibility Warning

X-NUCLEO-IDB04A1 and X-NUCLEO-IDB05A1 are Arduino compatible with an exception: instead of using pin D13 for the SPI clock, they use pin D3. The default configuration for this library is having the SPI clock on pin D3.

To be fully Arduino compatible, X-NUCLEO-IDB04A1 and X-NUCLEO-IDB05A1 need a small HW patch.

For X-NUCLEO-IDB04A1 this patch consists in removing zero resistor R10 and instead soldering zero resistor R11. For X-NUCLEO-IDB05A1 this patch consists in removing zero resistor R4 and instead soldering zero resistor R6.

In case you patch your board, then you also have to configure this library to use pin D13 to drive the SPI clock (see macro IDB0XA1_D13_PATCH in file x_nucleo_idb0xa1_targets.h).

If you use pin D13 for the SPI clock, please be aware that on STM32 Nucleo boards you may not drive the LED, otherwise you will get a conflict: the LED on STM32 Nucleo boards is connected to pin D13.

Referring to the current list of tested platforms (see X-NUCLEO-IDB04A1 and X-NUCLEO-IDB05A1 pages), the patch is required by ST-Nucleo-F103RB; ST-Nucleo-F302R8; ST-Nucleo-F411RE; and ST-Nucleo-F446RE.

source/BlueNRGDevice.cpp@167:abc42e7158a6, 2015-11-04 (annotated)

Committer:
Andrea Palmieri
Date:
Wed Nov 04 10:12:19 2015 +0100
Revision:
167:abc42e7158a6
Parent:
144:bdf5e8432131
Child:
168:ad1dff5dca1f
Synch with BLE API 2.0.3



Signed-off-by: Andrea Palmieri <andrea.palmieri@st.com>

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Wolfgang Betz 130:770ce14d3d15 1 /* mbed Microcontroller Library
Wolfgang Betz 130:770ce14d3d15 2 * Copyright (c) 2006-2013 ARM Limited
Wolfgang Betz 130:770ce14d3d15 3 *
Wolfgang Betz 130:770ce14d3d15 4 * Licensed under the Apache License, Version 2.0 (the "License");
Wolfgang Betz 130:770ce14d3d15 5 * you may not use this file except in compliance with the License.
Wolfgang Betz 130:770ce14d3d15 6 * You may obtain a copy of the License at
Wolfgang Betz 130:770ce14d3d15 7 *
Wolfgang Betz 130:770ce14d3d15 8 * http://www.apache.org/licenses/LICENSE-2.0
Wolfgang Betz 130:770ce14d3d15 9 *
Wolfgang Betz 130:770ce14d3d15 10 * Unless required by applicable law or agreed to in writing, software
Wolfgang Betz 130:770ce14d3d15 11 * distributed under the License is distributed on an "AS IS" BASIS,
Wolfgang Betz 130:770ce14d3d15 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
Wolfgang Betz 130:770ce14d3d15 13 * See the License for the specific language governing permissions and
Wolfgang Betz 130:770ce14d3d15 14 * limitations under the License.
Wolfgang Betz 130:770ce14d3d15 15 */
Wolfgang Betz 130:770ce14d3d15 16
Wolfgang Betz 130:770ce14d3d15 17 /**
Wolfgang Betz 130:770ce14d3d15 18 ******************************************************************************
Wolfgang Betz 130:770ce14d3d15 19 * @file BlueNRGDevice.cpp
Wolfgang Betz 130:770ce14d3d15 20 * @author STMicroelectronics
Wolfgang Betz 130:770ce14d3d15 21 * @brief Implementation of BLEDeviceInstanceBase
Wolfgang Betz 130:770ce14d3d15 22 ******************************************************************************
Wolfgang Betz 130:770ce14d3d15 23 * @copy
Wolfgang Betz 130:770ce14d3d15 24 *
Wolfgang Betz 130:770ce14d3d15 25 * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
Wolfgang Betz 130:770ce14d3d15 26 * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
Wolfgang Betz 130:770ce14d3d15 27 * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
Wolfgang Betz 130:770ce14d3d15 28 * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
Wolfgang Betz 130:770ce14d3d15 29 * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
Wolfgang Betz 130:770ce14d3d15 30 * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
Wolfgang Betz 130:770ce14d3d15 31 *
Wolfgang Betz 130:770ce14d3d15 32 * <h2><center>&copy; COPYRIGHT 2013 STMicroelectronics</center></h2>
Wolfgang Betz 130:770ce14d3d15 33 */
Wolfgang Betz 130:770ce14d3d15 34
Wolfgang Betz 130:770ce14d3d15 35 /** @defgroup BlueNRGDevice
Wolfgang Betz 130:770ce14d3d15 36 * @brief BlueNRG BLE_API Device Adaptation
Wolfgang Betz 130:770ce14d3d15 37 * @{
Wolfgang Betz 130:770ce14d3d15 38 */
Wolfgang Betz 130:770ce14d3d15 39
Wolfgang Betz 144:bdf5e8432131 40 #include "mbed-drivers/mbed.h"
Wolfgang Betz 130:770ce14d3d15 41 #include "BlueNRGDevice.h"
Wolfgang Betz 130:770ce14d3d15 42 #include "BlueNRGGap.h"
Wolfgang Betz 130:770ce14d3d15 43 #include "BlueNRGGattServer.h"
Wolfgang Betz 130:770ce14d3d15 44
Wolfgang Betz 130:770ce14d3d15 45 #include "btle.h"
Wolfgang Betz 130:770ce14d3d15 46 #include "Utils.h"
Wolfgang Betz 130:770ce14d3d15 47 #include "osal.h"
Wolfgang Betz 130:770ce14d3d15 48
Wolfgang Betz 130:770ce14d3d15 49 #include "debug.h"
Wolfgang Betz 130:770ce14d3d15 50 #include "stm32_bluenrg_ble.h"
Wolfgang Betz 130:770ce14d3d15 51
Wolfgang Betz 130:770ce14d3d15 52 extern "C" {
Wolfgang Betz 130:770ce14d3d15 53 #include "hci.h"
Wolfgang Betz 130:770ce14d3d15 54 }
Wolfgang Betz 130:770ce14d3d15 55
Wolfgang Betz 130:770ce14d3d15 56 #define HEADER_SIZE 5
Wolfgang Betz 130:770ce14d3d15 57 #define MAX_BUFFER_SIZE 255
Wolfgang Betz 130:770ce14d3d15 58
Wolfgang Betz 130:770ce14d3d15 59 /**
Wolfgang Betz 130:770ce14d3d15 60 * The singleton which represents the BlueNRG transport for the BLEDevice.
Wolfgang Betz 130:770ce14d3d15 61 *
Wolfgang Betz 130:770ce14d3d15 62 * See file 'x_nucleo_idb0xa1_targets.h' for details regarding the peripheral pins used!
Wolfgang Betz 130:770ce14d3d15 63 */
Wolfgang Betz 130:770ce14d3d15 64 #include "x_nucleo_idb0xa1_targets.h"
Wolfgang Betz 130:770ce14d3d15 65
Wolfgang Betz 130:770ce14d3d15 66 BlueNRGDevice bluenrgDeviceInstance(IDB0XA1_PIN_SPI_MOSI,
Wolfgang Betz 130:770ce14d3d15 67 IDB0XA1_PIN_SPI_MISO,
Wolfgang Betz 130:770ce14d3d15 68 IDB0XA1_PIN_SPI_SCK,
Wolfgang Betz 130:770ce14d3d15 69 IDB0XA1_PIN_SPI_nCS,
Wolfgang Betz 130:770ce14d3d15 70 IDB0XA1_PIN_SPI_RESET,
Wolfgang Betz 130:770ce14d3d15 71 IDB0XA1_PIN_SPI_IRQ);
Wolfgang Betz 130:770ce14d3d15 72
Wolfgang Betz 130:770ce14d3d15 73 /**
Wolfgang Betz 130:770ce14d3d15 74 * BLE-API requires an implementation of the following function in order to
Wolfgang Betz 130:770ce14d3d15 75 * obtain its transport handle.
Wolfgang Betz 130:770ce14d3d15 76 */
Wolfgang Betz 130:770ce14d3d15 77 BLEInstanceBase *
Wolfgang Betz 130:770ce14d3d15 78 createBLEInstance(void)
Wolfgang Betz 130:770ce14d3d15 79 {
Wolfgang Betz 130:770ce14d3d15 80 return (&bluenrgDeviceInstance);
Wolfgang Betz 130:770ce14d3d15 81 }
Wolfgang Betz 130:770ce14d3d15 82
Wolfgang Betz 130:770ce14d3d15 83 /**************************************************************************/
Wolfgang Betz 130:770ce14d3d15 84 /**
Wolfgang Betz 130:770ce14d3d15 85 @brief Constructor
Wolfgang Betz 130:770ce14d3d15 86 * @param mosi mbed pin to use for MOSI line of SPI interface
Wolfgang Betz 130:770ce14d3d15 87 * @param miso mbed pin to use for MISO line of SPI interface
Wolfgang Betz 130:770ce14d3d15 88 * @param sck mbed pin to use for SCK line of SPI interface
Wolfgang Betz 130:770ce14d3d15 89 * @param cs mbed pin to use for not chip select line of SPI interface
Wolfgang Betz 130:770ce14d3d15 90 * @param rst mbed pin to use for BlueNRG reset
Wolfgang Betz 130:770ce14d3d15 91 * @param irq mbed pin for BlueNRG IRQ
Wolfgang Betz 130:770ce14d3d15 92 */
Wolfgang Betz 130:770ce14d3d15 93 /**************************************************************************/
Wolfgang Betz 130:770ce14d3d15 94 BlueNRGDevice::BlueNRGDevice(PinName mosi,
Wolfgang Betz 130:770ce14d3d15 95 PinName miso,
Wolfgang Betz 130:770ce14d3d15 96 PinName sck,
Wolfgang Betz 130:770ce14d3d15 97 PinName cs,
Wolfgang Betz 130:770ce14d3d15 98 PinName rst,
Wolfgang Betz 130:770ce14d3d15 99 PinName irq) : spi_(mosi, miso, sck), nCS_(cs), rst_(rst), irq_(irq)
Wolfgang Betz 130:770ce14d3d15 100 {
Wolfgang Betz 130:770ce14d3d15 101 isInitialized = false;
Wolfgang Betz 130:770ce14d3d15 102
Wolfgang Betz 130:770ce14d3d15 103 // Setup the spi for 8 bit data, low clock polarity,
Wolfgang Betz 130:770ce14d3d15 104 // 1-edge phase, with an 8MHz clock rate
Wolfgang Betz 130:770ce14d3d15 105 spi_.format(8, 0);
Wolfgang Betz 130:770ce14d3d15 106 spi_.frequency(8000000);
Wolfgang Betz 130:770ce14d3d15 107
Wolfgang Betz 130:770ce14d3d15 108 // Deselect the BlueNRG chip by keeping its nCS signal high
Wolfgang Betz 130:770ce14d3d15 109 nCS_ = 1;
Wolfgang Betz 130:770ce14d3d15 110
Wolfgang Betz 130:770ce14d3d15 111 wait_us(500);
Wolfgang Betz 130:770ce14d3d15 112 }
Wolfgang Betz 130:770ce14d3d15 113
Wolfgang Betz 130:770ce14d3d15 114 /**************************************************************************/
Wolfgang Betz 130:770ce14d3d15 115 /**
Wolfgang Betz 130:770ce14d3d15 116 @brief Destructor
Wolfgang Betz 130:770ce14d3d15 117 */
Wolfgang Betz 130:770ce14d3d15 118 /**************************************************************************/
Wolfgang Betz 130:770ce14d3d15 119 BlueNRGDevice::~BlueNRGDevice(void)
Wolfgang Betz 130:770ce14d3d15 120 {
Wolfgang Betz 130:770ce14d3d15 121 }
Wolfgang Betz 130:770ce14d3d15 122
Wolfgang Betz 130:770ce14d3d15 123
Wolfgang Betz 130:770ce14d3d15 124 /**
Wolfgang Betz 130:770ce14d3d15 125 @brief Initialises anything required to start using BLE
Wolfgang Betz 130:770ce14d3d15 126 @param[in] void
Wolfgang Betz 130:770ce14d3d15 127 @returns ble_error_t
Wolfgang Betz 130:770ce14d3d15 128 */
Andrea Palmieri 167:abc42e7158a6 129 ble_error_t BlueNRGDevice::init(BLE::InstanceID_t instanceID, FunctionPointerWithContext<BLE::InitializationCompleteCallbackContext *> callback)
Wolfgang Betz 130:770ce14d3d15 130 {
Andrea Palmieri 167:abc42e7158a6 131 if (isInitialized) {
Andrea Palmieri 167:abc42e7158a6 132 BLE::InitializationCompleteCallbackContext context = {
Andrea Palmieri 167:abc42e7158a6 133 BLE::Instance(instanceID),
Andrea Palmieri 167:abc42e7158a6 134 BLE_ERROR_ALREADY_INITIALIZED
Andrea Palmieri 167:abc42e7158a6 135 };
Andrea Palmieri 167:abc42e7158a6 136 callback.call(&context);
Andrea Palmieri 167:abc42e7158a6 137 return BLE_ERROR_ALREADY_INITIALIZED;
Andrea Palmieri 167:abc42e7158a6 138 }
Andrea Palmieri 167:abc42e7158a6 139
Wolfgang Betz 130:770ce14d3d15 140 // Set the interrupt handler for the device
Wolfgang Betz 130:770ce14d3d15 141 irq_.mode(PullNone); // betzw: set irq mode
Wolfgang Betz 130:770ce14d3d15 142 irq_.rise(&HCI_Isr);
Wolfgang Betz 130:770ce14d3d15 143
Andrea Palmieri 167:abc42e7158a6 144 instanceID = instanceID;
Andrea Palmieri 167:abc42e7158a6 145
Wolfgang Betz 130:770ce14d3d15 146 /* ToDo: Clear memory contents, reset the SD, etc. */
Wolfgang Betz 132:51056160fa4a 147 // By default, we set the device GAP role to PERIPHERAL
Wolfgang Betz 132:51056160fa4a 148 btle_init(BlueNRGGap::getInstance().getIsSetAddress(), GAP_PERIPHERAL_ROLE_IDB04A1);
Wolfgang Betz 130:770ce14d3d15 149
Wolfgang Betz 130:770ce14d3d15 150 isInitialized = true;
Andrea Palmieri 167:abc42e7158a6 151 BLE::InitializationCompleteCallbackContext context = {
Andrea Palmieri 167:abc42e7158a6 152 BLE::Instance(instanceID),
Andrea Palmieri 167:abc42e7158a6 153 BLE_ERROR_NONE
Andrea Palmieri 167:abc42e7158a6 154 };
Andrea Palmieri 167:abc42e7158a6 155 callback.call(&context);
Wolfgang Betz 130:770ce14d3d15 156
Wolfgang Betz 130:770ce14d3d15 157 return BLE_ERROR_NONE;
Wolfgang Betz 130:770ce14d3d15 158 }
Wolfgang Betz 130:770ce14d3d15 159
Wolfgang Betz 130:770ce14d3d15 160
Wolfgang Betz 130:770ce14d3d15 161 /**
Wolfgang Betz 130:770ce14d3d15 162 @brief Resets the BLE HW, removing any existing services and
Wolfgang Betz 130:770ce14d3d15 163 characteristics
Wolfgang Betz 130:770ce14d3d15 164 @param[in] void
Wolfgang Betz 130:770ce14d3d15 165 @returns ble_error_t
Wolfgang Betz 130:770ce14d3d15 166 */
Wolfgang Betz 130:770ce14d3d15 167 ble_error_t BlueNRGDevice::reset(void)
Wolfgang Betz 130:770ce14d3d15 168 {
Wolfgang Betz 130:770ce14d3d15 169 wait_us(500);
Wolfgang Betz 130:770ce14d3d15 170
Wolfgang Betz 130:770ce14d3d15 171 /* Reset BlueNRG SPI interface */
Wolfgang Betz 130:770ce14d3d15 172 rst_ = 0;
Wolfgang Betz 130:770ce14d3d15 173 wait_us(5);
Wolfgang Betz 130:770ce14d3d15 174 rst_ = 1;
Wolfgang Betz 130:770ce14d3d15 175 wait_us(5);
Wolfgang Betz 130:770ce14d3d15 176
Wolfgang Betz 130:770ce14d3d15 177 /* Wait for the radio to come back up */
Wolfgang Betz 130:770ce14d3d15 178 wait_us(500);
Wolfgang Betz 130:770ce14d3d15 179
Wolfgang Betz 130:770ce14d3d15 180 isInitialized = false;
Wolfgang Betz 130:770ce14d3d15 181
Wolfgang Betz 130:770ce14d3d15 182 return BLE_ERROR_NONE;
Wolfgang Betz 130:770ce14d3d15 183 }
Wolfgang Betz 130:770ce14d3d15 184
Wolfgang Betz 130:770ce14d3d15 185 /*!
Wolfgang Betz 130:770ce14d3d15 186 @brief Wait for any BLE Event like BLE Connection, Read Request etc.
Wolfgang Betz 130:770ce14d3d15 187 @param[in] void
Wolfgang Betz 130:770ce14d3d15 188 @returns char *
Wolfgang Betz 130:770ce14d3d15 189 */
Wolfgang Betz 130:770ce14d3d15 190 void BlueNRGDevice::waitForEvent(void)
Wolfgang Betz 130:770ce14d3d15 191 {
Wolfgang Betz 130:770ce14d3d15 192 bool must_return = false;
Wolfgang Betz 130:770ce14d3d15 193
Wolfgang Betz 130:770ce14d3d15 194 do {
Wolfgang Betz 130:770ce14d3d15 195 BlueNRGGap::getInstance().Process();
Wolfgang Betz 130:770ce14d3d15 196
Wolfgang Betz 130:770ce14d3d15 197 HCI_Process();
Wolfgang Betz 130:770ce14d3d15 198
Wolfgang Betz 130:770ce14d3d15 199 if(must_return) return;
Wolfgang Betz 130:770ce14d3d15 200
Wolfgang Betz 130:770ce14d3d15 201 __WFE(); /* it is recommended that SEVONPEND in the
Wolfgang Betz 130:770ce14d3d15 202 System Control Register is NOT set */
Wolfgang Betz 130:770ce14d3d15 203 must_return = true; /* after returning from WFE we must guarantee
Wolfgang Betz 130:770ce14d3d15 204 that conrol is given back to main loop before next WFE */
Wolfgang Betz 130:770ce14d3d15 205 } while(true);
Wolfgang Betz 130:770ce14d3d15 206
Wolfgang Betz 139:3a75965fd389 207 }
Wolfgang Betz 130:770ce14d3d15 208
Wolfgang Betz 130:770ce14d3d15 209 /*!
Wolfgang Betz 130:770ce14d3d15 210 @brief get GAP version
Wolfgang Betz 130:770ce14d3d15 211 @param[in] void
Wolfgang Betz 130:770ce14d3d15 212 @returns char *
Wolfgang Betz 130:770ce14d3d15 213 */
Wolfgang Betz 130:770ce14d3d15 214 const char *BlueNRGDevice::getVersion(void)
Wolfgang Betz 130:770ce14d3d15 215 {
Wolfgang Betz 130:770ce14d3d15 216 char *version = new char[6];
Wolfgang Betz 130:770ce14d3d15 217 memcpy((void *)version, "1.0.0", 5);
Wolfgang Betz 130:770ce14d3d15 218 return version;
Wolfgang Betz 130:770ce14d3d15 219 }
Wolfgang Betz 130:770ce14d3d15 220
Wolfgang Betz 130:770ce14d3d15 221 /**************************************************************************/
Wolfgang Betz 130:770ce14d3d15 222 /*!
Wolfgang Betz 130:770ce14d3d15 223 @brief get reference to GAP object
Wolfgang Betz 130:770ce14d3d15 224 @param[in] void
Wolfgang Betz 130:770ce14d3d15 225 @returns Gap&
Wolfgang Betz 130:770ce14d3d15 226 */
Wolfgang Betz 130:770ce14d3d15 227 /**************************************************************************/
Wolfgang Betz 130:770ce14d3d15 228 Gap &BlueNRGDevice::getGap()
Wolfgang Betz 130:770ce14d3d15 229 {
Wolfgang Betz 130:770ce14d3d15 230 return BlueNRGGap::getInstance();
Wolfgang Betz 130:770ce14d3d15 231 }
Wolfgang Betz 130:770ce14d3d15 232
Wolfgang Betz 130:770ce14d3d15 233 const Gap &BlueNRGDevice::getGap() const
Wolfgang Betz 130:770ce14d3d15 234 {
Wolfgang Betz 130:770ce14d3d15 235 return BlueNRGGap::getInstance();
Wolfgang Betz 130:770ce14d3d15 236 }
Wolfgang Betz 130:770ce14d3d15 237
Wolfgang Betz 130:770ce14d3d15 238 /**************************************************************************/
Wolfgang Betz 130:770ce14d3d15 239 /*!
Wolfgang Betz 130:770ce14d3d15 240 @brief get reference to GATT server object
Wolfgang Betz 130:770ce14d3d15 241 @param[in] void
Wolfgang Betz 130:770ce14d3d15 242 @returns GattServer&
Wolfgang Betz 130:770ce14d3d15 243 */
Wolfgang Betz 130:770ce14d3d15 244 /**************************************************************************/
Wolfgang Betz 130:770ce14d3d15 245 GattServer &BlueNRGDevice::getGattServer()
Wolfgang Betz 130:770ce14d3d15 246 {
Wolfgang Betz 130:770ce14d3d15 247 return BlueNRGGattServer::getInstance();
Wolfgang Betz 130:770ce14d3d15 248 }
Wolfgang Betz 130:770ce14d3d15 249
Wolfgang Betz 130:770ce14d3d15 250 const GattServer &BlueNRGDevice::getGattServer() const
Wolfgang Betz 130:770ce14d3d15 251 {
Wolfgang Betz 130:770ce14d3d15 252 return BlueNRGGattServer::getInstance();
Wolfgang Betz 130:770ce14d3d15 253 }
Wolfgang Betz 130:770ce14d3d15 254
Wolfgang Betz 130:770ce14d3d15 255 /**************************************************************************/
Wolfgang Betz 130:770ce14d3d15 256 /*!
Wolfgang Betz 130:770ce14d3d15 257 @brief shut down the the BLE device
Wolfgang Betz 130:770ce14d3d15 258 @param[out] error if any
Wolfgang Betz 130:770ce14d3d15 259 */
Wolfgang Betz 130:770ce14d3d15 260 /**************************************************************************/
Wolfgang Betz 130:770ce14d3d15 261 ble_error_t BlueNRGDevice::shutdown(void) {
Wolfgang Betz 130:770ce14d3d15 262 return reset();
Wolfgang Betz 130:770ce14d3d15 263 }
Wolfgang Betz 130:770ce14d3d15 264
Wolfgang Betz 130:770ce14d3d15 265 /**
Wolfgang Betz 130:770ce14d3d15 266 * @brief Reads from BlueNRG SPI buffer and store data into local buffer.
Wolfgang Betz 130:770ce14d3d15 267 * @param buffer : Buffer where data from SPI are stored
Wolfgang Betz 130:770ce14d3d15 268 * @param buff_size: Buffer size
Wolfgang Betz 130:770ce14d3d15 269 * @retval int32_t : Number of read bytes
Wolfgang Betz 130:770ce14d3d15 270 */
Wolfgang Betz 130:770ce14d3d15 271 int32_t BlueNRGDevice::spiRead(uint8_t *buffer, uint8_t buff_size)
Wolfgang Betz 130:770ce14d3d15 272 {
Wolfgang Betz 130:770ce14d3d15 273 uint16_t byte_count;
Wolfgang Betz 130:770ce14d3d15 274 uint8_t len = 0;
Wolfgang Betz 130:770ce14d3d15 275 uint8_t char_ff = 0xff;
Wolfgang Betz 130:770ce14d3d15 276 volatile uint8_t read_char;
Wolfgang Betz 130:770ce14d3d15 277
Wolfgang Betz 130:770ce14d3d15 278 uint8_t i = 0;
Wolfgang Betz 130:770ce14d3d15 279 volatile uint8_t tmpreg;
Wolfgang Betz 130:770ce14d3d15 280
Wolfgang Betz 130:770ce14d3d15 281 uint8_t header_master[HEADER_SIZE] = {0x0b, 0x00, 0x00, 0x00, 0x00};
Wolfgang Betz 130:770ce14d3d15 282 uint8_t header_slave[HEADER_SIZE];
Wolfgang Betz 130:770ce14d3d15 283
Wolfgang Betz 130:770ce14d3d15 284 /* Select the chip */
Wolfgang Betz 130:770ce14d3d15 285 nCS_ = 0;
Wolfgang Betz 130:770ce14d3d15 286
Wolfgang Betz 130:770ce14d3d15 287 /* Read the header */
Wolfgang Betz 130:770ce14d3d15 288 for (i = 0; i < 5; i++)
Wolfgang Betz 130:770ce14d3d15 289 {
Wolfgang Betz 130:770ce14d3d15 290 tmpreg = spi_.write(header_master[i]);
Wolfgang Betz 130:770ce14d3d15 291 header_slave[i] = (uint8_t)(tmpreg);
Wolfgang Betz 130:770ce14d3d15 292 }
Wolfgang Betz 130:770ce14d3d15 293
Wolfgang Betz 130:770ce14d3d15 294 if (header_slave[0] == 0x02) {
Wolfgang Betz 130:770ce14d3d15 295 /* device is ready */
Wolfgang Betz 130:770ce14d3d15 296 byte_count = (header_slave[4]<<8)|header_slave[3];
Wolfgang Betz 130:770ce14d3d15 297
Wolfgang Betz 130:770ce14d3d15 298 if (byte_count > 0) {
Wolfgang Betz 130:770ce14d3d15 299
Wolfgang Betz 130:770ce14d3d15 300 /* avoid to read more data that size of the buffer */
Wolfgang Betz 130:770ce14d3d15 301 if (byte_count > buff_size){
Wolfgang Betz 130:770ce14d3d15 302 byte_count = buff_size;
Wolfgang Betz 130:770ce14d3d15 303 }
Wolfgang Betz 130:770ce14d3d15 304
Wolfgang Betz 130:770ce14d3d15 305 for (len = 0; len < byte_count; len++){
Wolfgang Betz 130:770ce14d3d15 306 read_char = spi_.write(char_ff);
Wolfgang Betz 130:770ce14d3d15 307 buffer[len] = read_char;
Wolfgang Betz 130:770ce14d3d15 308 }
Wolfgang Betz 130:770ce14d3d15 309 }
Wolfgang Betz 130:770ce14d3d15 310 }
Wolfgang Betz 130:770ce14d3d15 311 /* Release CS line to deselect the chip */
Wolfgang Betz 130:770ce14d3d15 312 nCS_ = 1;
Wolfgang Betz 130:770ce14d3d15 313
Wolfgang Betz 130:770ce14d3d15 314 // Add a small delay to give time to the BlueNRG to set the IRQ pin low
Wolfgang Betz 130:770ce14d3d15 315 // to avoid a useless SPI read at the end of the transaction
Wolfgang Betz 130:770ce14d3d15 316 for(volatile int i = 0; i < 2; i++)__NOP();
Wolfgang Betz 130:770ce14d3d15 317
Wolfgang Betz 130:770ce14d3d15 318 #ifdef PRINT_CSV_FORMAT
Wolfgang Betz 130:770ce14d3d15 319 if (len > 0) {
Wolfgang Betz 130:770ce14d3d15 320 print_csv_time();
Wolfgang Betz 130:770ce14d3d15 321 for (int i=0; i<len; i++) {
Wolfgang Betz 130:770ce14d3d15 322 PRINT_CSV(" %02x", buffer[i]);
Wolfgang Betz 130:770ce14d3d15 323 }
Wolfgang Betz 130:770ce14d3d15 324 PRINT_CSV("\n");
Wolfgang Betz 130:770ce14d3d15 325 }
Wolfgang Betz 130:770ce14d3d15 326 #endif
Wolfgang Betz 130:770ce14d3d15 327
Wolfgang Betz 130:770ce14d3d15 328 return len;
Wolfgang Betz 130:770ce14d3d15 329 }
Wolfgang Betz 130:770ce14d3d15 330
Wolfgang Betz 130:770ce14d3d15 331 /**
Wolfgang Betz 130:770ce14d3d15 332 * @brief Writes data from local buffer to SPI.
Wolfgang Betz 130:770ce14d3d15 333 * @param data1 : First data buffer to be written
Wolfgang Betz 130:770ce14d3d15 334 * @param data2 : Second data buffer to be written
Wolfgang Betz 130:770ce14d3d15 335 * @param Nb_bytes1: Size of first data buffer to be written
Wolfgang Betz 130:770ce14d3d15 336 * @param Nb_bytes2: Size of second data buffer to be written
Wolfgang Betz 130:770ce14d3d15 337 * @retval Number of read bytes
Wolfgang Betz 130:770ce14d3d15 338 */
Wolfgang Betz 130:770ce14d3d15 339 int32_t BlueNRGDevice::spiWrite(uint8_t* data1,
Wolfgang Betz 130:770ce14d3d15 340 uint8_t* data2, uint8_t Nb_bytes1, uint8_t Nb_bytes2)
Wolfgang Betz 130:770ce14d3d15 341 {
Wolfgang Betz 130:770ce14d3d15 342 int32_t result = 0;
Wolfgang Betz 130:770ce14d3d15 343 uint32_t i;
Wolfgang Betz 130:770ce14d3d15 344 volatile uint8_t tmpreg;
Wolfgang Betz 130:770ce14d3d15 345
Wolfgang Betz 130:770ce14d3d15 346 unsigned char header_master[HEADER_SIZE] = {0x0a, 0x00, 0x00, 0x00, 0x00};
Wolfgang Betz 130:770ce14d3d15 347 unsigned char header_slave[HEADER_SIZE] = {0xaa, 0x00, 0x00, 0x00, 0x00};
Wolfgang Betz 130:770ce14d3d15 348
Wolfgang Betz 130:770ce14d3d15 349 disable_irq();
Wolfgang Betz 130:770ce14d3d15 350
Wolfgang Betz 130:770ce14d3d15 351 /* CS reset */
Wolfgang Betz 130:770ce14d3d15 352 nCS_ = 0;
Wolfgang Betz 130:770ce14d3d15 353
Wolfgang Betz 130:770ce14d3d15 354 /* Exchange header */
Wolfgang Betz 130:770ce14d3d15 355 for (i = 0; i < 5; i++)
Wolfgang Betz 130:770ce14d3d15 356 {
Wolfgang Betz 130:770ce14d3d15 357 tmpreg = spi_.write(header_master[i]);
Wolfgang Betz 130:770ce14d3d15 358 header_slave[i] = tmpreg;
Wolfgang Betz 130:770ce14d3d15 359 }
Wolfgang Betz 130:770ce14d3d15 360
Wolfgang Betz 130:770ce14d3d15 361 if (header_slave[0] == 0x02) {
Wolfgang Betz 130:770ce14d3d15 362 /* SPI is ready */
Wolfgang Betz 130:770ce14d3d15 363 if (header_slave[1] >= (Nb_bytes1+Nb_bytes2)) {
Wolfgang Betz 130:770ce14d3d15 364
Wolfgang Betz 130:770ce14d3d15 365 /* Buffer is big enough */
Wolfgang Betz 130:770ce14d3d15 366 for (i = 0; i < Nb_bytes1; i++) {
Wolfgang Betz 130:770ce14d3d15 367 spi_.write(*(data1 + i));
Wolfgang Betz 130:770ce14d3d15 368 }
Wolfgang Betz 130:770ce14d3d15 369 for (i = 0; i < Nb_bytes2; i++) {
Wolfgang Betz 130:770ce14d3d15 370 spi_.write(*(data2 + i));
Wolfgang Betz 130:770ce14d3d15 371 }
Wolfgang Betz 130:770ce14d3d15 372 } else {
Wolfgang Betz 130:770ce14d3d15 373 /* Buffer is too small */
Wolfgang Betz 130:770ce14d3d15 374 result = -2;
Wolfgang Betz 130:770ce14d3d15 375 }
Wolfgang Betz 130:770ce14d3d15 376 } else {
Wolfgang Betz 130:770ce14d3d15 377 /* SPI is not ready */
Wolfgang Betz 130:770ce14d3d15 378 result = -1;
Wolfgang Betz 130:770ce14d3d15 379 }
Wolfgang Betz 130:770ce14d3d15 380
Wolfgang Betz 130:770ce14d3d15 381 /* Release CS line */
Wolfgang Betz 130:770ce14d3d15 382 //HAL_GPIO_WritePin(BNRG_SPI_CS_PORT, BNRG_SPI_CS_PIN, GPIO_PIN_SET);
Wolfgang Betz 130:770ce14d3d15 383 nCS_ = 1;
Wolfgang Betz 130:770ce14d3d15 384
Wolfgang Betz 130:770ce14d3d15 385 enable_irq();
Wolfgang Betz 130:770ce14d3d15 386
Wolfgang Betz 130:770ce14d3d15 387 return result;
Wolfgang Betz 130:770ce14d3d15 388 }
Wolfgang Betz 130:770ce14d3d15 389
Wolfgang Betz 130:770ce14d3d15 390 bool BlueNRGDevice::dataPresent()
Wolfgang Betz 130:770ce14d3d15 391 {
Wolfgang Betz 130:770ce14d3d15 392 return (irq_ == 1);
Wolfgang Betz 130:770ce14d3d15 393 }
Wolfgang Betz 130:770ce14d3d15 394
Wolfgang Betz 130:770ce14d3d15 395 void BlueNRGDevice::disable_irq()
Wolfgang Betz 130:770ce14d3d15 396 {
Wolfgang Betz 130:770ce14d3d15 397 irq_.disable_irq();
Wolfgang Betz 130:770ce14d3d15 398 }
Wolfgang Betz 130:770ce14d3d15 399
Wolfgang Betz 130:770ce14d3d15 400 void BlueNRGDevice::enable_irq()
Wolfgang Betz 130:770ce14d3d15 401 {
Wolfgang Betz 130:770ce14d3d15 402 irq_.enable_irq();
Wolfgang Betz 130:770ce14d3d15 403 }