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@129:57997390c086, 2015-11-03 (annotated)

Committer:
leonardoaraujosantos
Date:
Tue Nov 03 23:10:27 2015 +0000
Revision:
129:57997390c086
Parent:
119:19128d9d254f
Child:
120:554a95afbd16
Changing pin D13

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Wolfgang Betz 90:26c0c9807ab4 1 /* mbed Microcontroller Library
Wolfgang Betz 90:26c0c9807ab4 2 * Copyright (c) 2006-2013 ARM Limited
Wolfgang Betz 90:26c0c9807ab4 3 *
Wolfgang Betz 90:26c0c9807ab4 4 * Licensed under the Apache License, Version 2.0 (the "License");
Wolfgang Betz 90:26c0c9807ab4 5 * you may not use this file except in compliance with the License.
Wolfgang Betz 90:26c0c9807ab4 6 * You may obtain a copy of the License at
Wolfgang Betz 90:26c0c9807ab4 7 *
Wolfgang Betz 90:26c0c9807ab4 8 * http://www.apache.org/licenses/LICENSE-2.0
Wolfgang Betz 90:26c0c9807ab4 9 *
Wolfgang Betz 90:26c0c9807ab4 10 * Unless required by applicable law or agreed to in writing, software
Wolfgang Betz 90:26c0c9807ab4 11 * distributed under the License is distributed on an "AS IS" BASIS,
Wolfgang Betz 90:26c0c9807ab4 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
Wolfgang Betz 90:26c0c9807ab4 13 * See the License for the specific language governing permissions and
Wolfgang Betz 90:26c0c9807ab4 14 * limitations under the License.
Wolfgang Betz 90:26c0c9807ab4 15 */
Wolfgang Betz 116:1aa0d2da72e4 16
Wolfgang Betz 90:26c0c9807ab4 17 /**
Wolfgang Betz 90:26c0c9807ab4 18 ******************************************************************************
Wolfgang Betz 115:3b47df81a56b 19 * @file BlueNRGDevice.cpp
Wolfgang Betz 90:26c0c9807ab4 20 * @author STMicroelectronics
Wolfgang Betz 90:26c0c9807ab4 21 * @brief Implementation of BLEDeviceInstanceBase
Wolfgang Betz 90:26c0c9807ab4 22 ******************************************************************************
Wolfgang Betz 90:26c0c9807ab4 23 * @copy
Wolfgang Betz 90:26c0c9807ab4 24 *
Wolfgang Betz 90:26c0c9807ab4 25 * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
Wolfgang Betz 90:26c0c9807ab4 26 * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
Wolfgang Betz 90:26c0c9807ab4 27 * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
Wolfgang Betz 90:26c0c9807ab4 28 * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
Wolfgang Betz 90:26c0c9807ab4 29 * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
Wolfgang Betz 90:26c0c9807ab4 30 * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
Wolfgang Betz 90:26c0c9807ab4 31 *
Wolfgang Betz 90:26c0c9807ab4 32 * <h2><center>&copy; COPYRIGHT 2013 STMicroelectronics</center></h2>
Wolfgang Betz 115:3b47df81a56b 33 */
Wolfgang Betz 115:3b47df81a56b 34
Wolfgang Betz 90:26c0c9807ab4 35 /** @defgroup BlueNRGDevice
Wolfgang Betz 90:26c0c9807ab4 36 * @brief BlueNRG BLE_API Device Adaptation
Wolfgang Betz 90:26c0c9807ab4 37 * @{
Wolfgang Betz 90:26c0c9807ab4 38 */
Wolfgang Betz 115:3b47df81a56b 39
Wolfgang Betz 90:26c0c9807ab4 40 #include "mbed.h"
Wolfgang Betz 90:26c0c9807ab4 41 #include "BlueNRGDevice.h"
Wolfgang Betz 90:26c0c9807ab4 42 #include "BlueNRGGap.h"
Wolfgang Betz 90:26c0c9807ab4 43 #include "BlueNRGGattServer.h"
Wolfgang Betz 116:1aa0d2da72e4 44
Wolfgang Betz 90:26c0c9807ab4 45 #include "btle.h"
Wolfgang Betz 90:26c0c9807ab4 46 #include "Utils.h"
Wolfgang Betz 90:26c0c9807ab4 47 #include "osal.h"
Wolfgang Betz 116:1aa0d2da72e4 48
Wolfgang Betz 119:19128d9d254f 49 #include "debug.h"
Wolfgang Betz 115:3b47df81a56b 50 #include "stm32_bluenrg_ble.h"
Wolfgang Betz 116:1aa0d2da72e4 51
Wolfgang Betz 90:26c0c9807ab4 52 extern "C" {
Wolfgang Betz 117:aff31e70cacc 53 #include "hci.h"
Wolfgang Betz 90:26c0c9807ab4 54 }
Wolfgang Betz 116:1aa0d2da72e4 55
Wolfgang Betz 90:26c0c9807ab4 56 #define HEADER_SIZE 5
Wolfgang Betz 90:26c0c9807ab4 57 #define MAX_BUFFER_SIZE 255
Wolfgang Betz 116:1aa0d2da72e4 58
Wolfgang Betz 90:26c0c9807ab4 59 /**
Wolfgang Betz 116:1aa0d2da72e4 60 * The singleton which represents the BlueNRG transport for the BLEDevice.
Wolfgang Betz 116:1aa0d2da72e4 61 *
Wolfgang Betz 116:1aa0d2da72e4 62 * See file 'x_nucleo_idb0xa1_targets.h' for details regarding the peripheral pins used!
Wolfgang Betz 116:1aa0d2da72e4 63 */
Wolfgang Betz 113:31c73e9b0108 64 #include "x_nucleo_idb0xa1_targets.h"
Wolfgang Betz 113:31c73e9b0108 65
Wolfgang Betz 113:31c73e9b0108 66 BlueNRGDevice bluenrgDeviceInstance(IDB0XA1_PIN_SPI_MOSI,
Wolfgang Betz 113:31c73e9b0108 67 IDB0XA1_PIN_SPI_MISO,
Wolfgang Betz 113:31c73e9b0108 68 IDB0XA1_PIN_SPI_SCK,
Wolfgang Betz 113:31c73e9b0108 69 IDB0XA1_PIN_SPI_nCS,
Wolfgang Betz 113:31c73e9b0108 70 IDB0XA1_PIN_SPI_RESET,
Wolfgang Betz 113:31c73e9b0108 71 IDB0XA1_PIN_SPI_IRQ);
Wolfgang Betz 90:26c0c9807ab4 72
Wolfgang Betz 90:26c0c9807ab4 73 /**
Wolfgang Betz 117:aff31e70cacc 74 * BLE-API requires an implementation of the following function in order to
Wolfgang Betz 117:aff31e70cacc 75 * obtain its transport handle.
Wolfgang Betz 117:aff31e70cacc 76 */
Wolfgang Betz 90:26c0c9807ab4 77 BLEInstanceBase *
Wolfgang Betz 90:26c0c9807ab4 78 createBLEInstance(void)
Wolfgang Betz 90:26c0c9807ab4 79 {
Wolfgang Betz 117:aff31e70cacc 80 return (&bluenrgDeviceInstance);
Wolfgang Betz 90:26c0c9807ab4 81 }
Wolfgang Betz 116:1aa0d2da72e4 82
Wolfgang Betz 90:26c0c9807ab4 83 /**************************************************************************/
Wolfgang Betz 90:26c0c9807ab4 84 /**
Wolfgang Betz 117:aff31e70cacc 85 @brief Constructor
Wolfgang Betz 117:aff31e70cacc 86 * @param mosi mbed pin to use for MOSI line of SPI interface
Wolfgang Betz 117:aff31e70cacc 87 * @param miso mbed pin to use for MISO line of SPI interface
Wolfgang Betz 117:aff31e70cacc 88 * @param sck mbed pin to use for SCK line of SPI interface
Wolfgang Betz 117:aff31e70cacc 89 * @param cs mbed pin to use for not chip select line of SPI interface
Wolfgang Betz 117:aff31e70cacc 90 * @param rst mbed pin to use for BlueNRG reset
Wolfgang Betz 117:aff31e70cacc 91 * @param irq mbed pin for BlueNRG IRQ
Wolfgang Betz 117:aff31e70cacc 92 */
Wolfgang Betz 90:26c0c9807ab4 93 /**************************************************************************/
Wolfgang Betz 90:26c0c9807ab4 94 BlueNRGDevice::BlueNRGDevice(PinName mosi,
Wolfgang Betz 90:26c0c9807ab4 95 PinName miso,
Wolfgang Betz 90:26c0c9807ab4 96 PinName sck,
Wolfgang Betz 90:26c0c9807ab4 97 PinName cs,
Wolfgang Betz 90:26c0c9807ab4 98 PinName rst,
Wolfgang Betz 90:26c0c9807ab4 99 PinName irq) : spi_(mosi, miso, sck), nCS_(cs), rst_(rst), irq_(irq)
Wolfgang Betz 90:26c0c9807ab4 100 {
Wolfgang Betz 117:aff31e70cacc 101 isInitialized = false;
Wolfgang Betz 116:1aa0d2da72e4 102
Wolfgang Betz 117:aff31e70cacc 103 // Setup the spi for 8 bit data, low clock polarity,
Wolfgang Betz 117:aff31e70cacc 104 // 1-edge phase, with an 8MHz clock rate
Wolfgang Betz 117:aff31e70cacc 105 spi_.format(8, 0);
Wolfgang Betz 117:aff31e70cacc 106 spi_.frequency(8000000);
Wolfgang Betz 116:1aa0d2da72e4 107
Wolfgang Betz 117:aff31e70cacc 108 // Deselect the BlueNRG chip by keeping its nCS signal high
Wolfgang Betz 117:aff31e70cacc 109 nCS_ = 1;
Wolfgang Betz 116:1aa0d2da72e4 110
Wolfgang Betz 117:aff31e70cacc 111 wait_us(500);
Wolfgang Betz 90:26c0c9807ab4 112 }
Wolfgang Betz 116:1aa0d2da72e4 113
Wolfgang Betz 90:26c0c9807ab4 114 /**************************************************************************/
Wolfgang Betz 90:26c0c9807ab4 115 /**
Wolfgang Betz 117:aff31e70cacc 116 @brief Destructor
Wolfgang Betz 90:26c0c9807ab4 117 */
Wolfgang Betz 90:26c0c9807ab4 118 /**************************************************************************/
Wolfgang Betz 90:26c0c9807ab4 119 BlueNRGDevice::~BlueNRGDevice(void)
Wolfgang Betz 90:26c0c9807ab4 120 {
Wolfgang Betz 90:26c0c9807ab4 121 }
Wolfgang Betz 116:1aa0d2da72e4 122
Wolfgang Betz 116:1aa0d2da72e4 123
Wolfgang Betz 90:26c0c9807ab4 124 /**
Wolfgang Betz 117:aff31e70cacc 125 @brief Initialises anything required to start using BLE
Wolfgang Betz 117:aff31e70cacc 126 @param[in] void
Wolfgang Betz 117:aff31e70cacc 127 @returns ble_error_t
Wolfgang Betz 90:26c0c9807ab4 128 */
Wolfgang Betz 90:26c0c9807ab4 129 ble_error_t BlueNRGDevice::init(void)
Wolfgang Betz 90:26c0c9807ab4 130 {
Wolfgang Betz 116:1aa0d2da72e4 131 // Set the interrupt handler for the device
Wolfgang Betz 116:1aa0d2da72e4 132 irq_.mode(PullNone); // betzw: set irq mode
Wolfgang Betz 116:1aa0d2da72e4 133 irq_.rise(&HCI_Isr);
Wolfgang Betz 116:1aa0d2da72e4 134
Wolfgang Betz 116:1aa0d2da72e4 135 /* ToDo: Clear memory contents, reset the SD, etc. */
Wolfgang Betz 116:1aa0d2da72e4 136 btle_init(BlueNRGGap::getInstance().getIsSetAddress());
Wolfgang Betz 116:1aa0d2da72e4 137
Wolfgang Betz 116:1aa0d2da72e4 138 isInitialized = true;
Wolfgang Betz 90:26c0c9807ab4 139
Wolfgang Betz 116:1aa0d2da72e4 140 return BLE_ERROR_NONE;
Wolfgang Betz 90:26c0c9807ab4 141 }
Wolfgang Betz 116:1aa0d2da72e4 142
Wolfgang Betz 116:1aa0d2da72e4 143
Wolfgang Betz 90:26c0c9807ab4 144 /**
Wolfgang Betz 117:aff31e70cacc 145 @brief Resets the BLE HW, removing any existing services and
Wolfgang Betz 117:aff31e70cacc 146 characteristics
Wolfgang Betz 117:aff31e70cacc 147 @param[in] void
Wolfgang Betz 117:aff31e70cacc 148 @returns ble_error_t
Wolfgang Betz 90:26c0c9807ab4 149 */
Wolfgang Betz 90:26c0c9807ab4 150 ble_error_t BlueNRGDevice::reset(void)
Wolfgang Betz 90:26c0c9807ab4 151 {
Wolfgang Betz 117:aff31e70cacc 152 wait_us(500);
Wolfgang Betz 116:1aa0d2da72e4 153
Wolfgang Betz 117:aff31e70cacc 154 /* Reset BlueNRG SPI interface */
Wolfgang Betz 117:aff31e70cacc 155 rst_ = 0;
Wolfgang Betz 116:1aa0d2da72e4 156 wait_us(5);
Wolfgang Betz 117:aff31e70cacc 157 rst_ = 1;
Wolfgang Betz 116:1aa0d2da72e4 158 wait_us(5);
Wolfgang Betz 116:1aa0d2da72e4 159
Wolfgang Betz 117:aff31e70cacc 160 /* Wait for the radio to come back up */
Wolfgang Betz 117:aff31e70cacc 161 wait_us(500);
Wolfgang Betz 90:26c0c9807ab4 162
Wolfgang Betz 117:aff31e70cacc 163 isInitialized = false;
Wolfgang Betz 116:1aa0d2da72e4 164
Wolfgang Betz 117:aff31e70cacc 165 return BLE_ERROR_NONE;
Wolfgang Betz 116:1aa0d2da72e4 166 }
Wolfgang Betz 116:1aa0d2da72e4 167
Wolfgang Betz 116:1aa0d2da72e4 168
Wolfgang Betz 116:1aa0d2da72e4 169 /*!
Wolfgang Betz 116:1aa0d2da72e4 170 @brief Wait for any BLE Event like BLE Connection, Read Request etc.
Wolfgang Betz 116:1aa0d2da72e4 171 @param[in] void
Wolfgang Betz 116:1aa0d2da72e4 172 @returns char *
Wolfgang Betz 116:1aa0d2da72e4 173 */
Wolfgang Betz 116:1aa0d2da72e4 174 void BlueNRGDevice::waitForEvent(void)
Wolfgang Betz 116:1aa0d2da72e4 175 {
Wolfgang Betz 116:1aa0d2da72e4 176 bool must_return = false;
Wolfgang Betz 116:1aa0d2da72e4 177
Wolfgang Betz 116:1aa0d2da72e4 178 do {
Wolfgang Betz 119:19128d9d254f 179 BlueNRGGap::getInstance().Process();
Wolfgang Betz 119:19128d9d254f 180
Wolfgang Betz 116:1aa0d2da72e4 181 HCI_Process();
Wolfgang Betz 119:19128d9d254f 182
Wolfgang Betz 116:1aa0d2da72e4 183 if(must_return) return;
Wolfgang Betz 116:1aa0d2da72e4 184
Wolfgang Betz 116:1aa0d2da72e4 185 __WFE(); /* it is recommended that SEVONPEND in the
Wolfgang Betz 116:1aa0d2da72e4 186 System Control Register is NOT set */
Wolfgang Betz 116:1aa0d2da72e4 187 must_return = true; /* after returning from WFE we must guarantee
Wolfgang Betz 116:1aa0d2da72e4 188 that conrol is given back to main loop before next WFE */
Wolfgang Betz 116:1aa0d2da72e4 189 } while(true);
Wolfgang Betz 119:19128d9d254f 190
Wolfgang Betz 90:26c0c9807ab4 191 }
Wolfgang Betz 115:3b47df81a56b 192
Wolfgang Betz 115:3b47df81a56b 193
Wolfgang Betz 90:26c0c9807ab4 194 /*!
Wolfgang Betz 117:aff31e70cacc 195 @brief get GAP version
Wolfgang Betz 117:aff31e70cacc 196 @param[in] void
Wolfgang Betz 117:aff31e70cacc 197 @returns char *
Wolfgang Betz 90:26c0c9807ab4 198 */
Wolfgang Betz 90:26c0c9807ab4 199 const char *BlueNRGDevice::getVersion(void)
Wolfgang Betz 90:26c0c9807ab4 200 {
Wolfgang Betz 117:aff31e70cacc 201 char *version = new char[6];
Wolfgang Betz 117:aff31e70cacc 202 memcpy((void *)version, "1.0.0", 5);
Wolfgang Betz 117:aff31e70cacc 203 return version;
Wolfgang Betz 90:26c0c9807ab4 204 }
Wolfgang Betz 116:1aa0d2da72e4 205
Wolfgang Betz 90:26c0c9807ab4 206 /**************************************************************************/
Wolfgang Betz 90:26c0c9807ab4 207 /*!
Wolfgang Betz 117:aff31e70cacc 208 @brief get init state
Wolfgang Betz 117:aff31e70cacc 209 @param[in] void
Wolfgang Betz 117:aff31e70cacc 210 @returns bool
Wolfgang Betz 90:26c0c9807ab4 211 */
Wolfgang Betz 90:26c0c9807ab4 212 /**************************************************************************/
Wolfgang Betz 90:26c0c9807ab4 213 bool BlueNRGDevice::getIsInitialized(void)
Wolfgang Betz 90:26c0c9807ab4 214 {
Wolfgang Betz 117:aff31e70cacc 215 return isInitialized;
Wolfgang Betz 90:26c0c9807ab4 216 }
Wolfgang Betz 116:1aa0d2da72e4 217
Wolfgang Betz 90:26c0c9807ab4 218 /**************************************************************************/
Wolfgang Betz 90:26c0c9807ab4 219 /*!
Wolfgang Betz 117:aff31e70cacc 220 @brief get reference to GAP object
Wolfgang Betz 117:aff31e70cacc 221 @param[in] void
Wolfgang Betz 117:aff31e70cacc 222 @returns Gap&
Wolfgang Betz 90:26c0c9807ab4 223 */
Wolfgang Betz 90:26c0c9807ab4 224 /**************************************************************************/
Wolfgang Betz 90:26c0c9807ab4 225 Gap &BlueNRGDevice::getGap()
Wolfgang Betz 90:26c0c9807ab4 226 {
Wolfgang Betz 117:aff31e70cacc 227 return BlueNRGGap::getInstance();
Wolfgang Betz 90:26c0c9807ab4 228 }
Wolfgang Betz 116:1aa0d2da72e4 229
Wolfgang Betz 90:26c0c9807ab4 230 const Gap &BlueNRGDevice::getGap() const
Wolfgang Betz 90:26c0c9807ab4 231 {
Wolfgang Betz 117:aff31e70cacc 232 return BlueNRGGap::getInstance();
Wolfgang Betz 90:26c0c9807ab4 233 }
Wolfgang Betz 116:1aa0d2da72e4 234
Wolfgang Betz 90:26c0c9807ab4 235 /**************************************************************************/
Wolfgang Betz 90:26c0c9807ab4 236 /*!
Wolfgang Betz 117:aff31e70cacc 237 @brief get reference to GATT server object
Wolfgang Betz 117:aff31e70cacc 238 @param[in] void
Wolfgang Betz 117:aff31e70cacc 239 @returns GattServer&
Wolfgang Betz 90:26c0c9807ab4 240 */
Wolfgang Betz 90:26c0c9807ab4 241 /**************************************************************************/
Wolfgang Betz 90:26c0c9807ab4 242 GattServer &BlueNRGDevice::getGattServer()
Wolfgang Betz 90:26c0c9807ab4 243 {
Wolfgang Betz 117:aff31e70cacc 244 return BlueNRGGattServer::getInstance();
Wolfgang Betz 90:26c0c9807ab4 245 }
Wolfgang Betz 116:1aa0d2da72e4 246
Wolfgang Betz 90:26c0c9807ab4 247 const GattServer &BlueNRGDevice::getGattServer() const
Wolfgang Betz 90:26c0c9807ab4 248 {
Wolfgang Betz 117:aff31e70cacc 249 return BlueNRGGattServer::getInstance();
Wolfgang Betz 90:26c0c9807ab4 250 }
Wolfgang Betz 119:19128d9d254f 251
Wolfgang Betz 90:26c0c9807ab4 252 /**************************************************************************/
Wolfgang Betz 90:26c0c9807ab4 253 /*!
Wolfgang Betz 117:aff31e70cacc 254 @brief shut down the the BLE device
Wolfgang Betz 117:aff31e70cacc 255 @param[out] error if any
Wolfgang Betz 90:26c0c9807ab4 256 */
Wolfgang Betz 90:26c0c9807ab4 257 /**************************************************************************/
Wolfgang Betz 90:26c0c9807ab4 258 ble_error_t BlueNRGDevice::shutdown(void) {
Wolfgang Betz 117:aff31e70cacc 259 return reset();
Wolfgang Betz 90:26c0c9807ab4 260 }
Wolfgang Betz 116:1aa0d2da72e4 261
Wolfgang Betz 90:26c0c9807ab4 262 /**
Wolfgang Betz 90:26c0c9807ab4 263 * @brief Reads from BlueNRG SPI buffer and store data into local buffer.
Wolfgang Betz 90:26c0c9807ab4 264 * @param buffer : Buffer where data from SPI are stored
Wolfgang Betz 90:26c0c9807ab4 265 * @param buff_size: Buffer size
Wolfgang Betz 90:26c0c9807ab4 266 * @retval int32_t : Number of read bytes
Wolfgang Betz 90:26c0c9807ab4 267 */
Wolfgang Betz 90:26c0c9807ab4 268 int32_t BlueNRGDevice::spiRead(uint8_t *buffer, uint8_t buff_size)
Wolfgang Betz 90:26c0c9807ab4 269 {
Wolfgang Betz 117:aff31e70cacc 270 uint16_t byte_count;
Wolfgang Betz 117:aff31e70cacc 271 uint8_t len = 0;
Wolfgang Betz 117:aff31e70cacc 272 uint8_t char_ff = 0xff;
Wolfgang Betz 117:aff31e70cacc 273 volatile uint8_t read_char;
Wolfgang Betz 116:1aa0d2da72e4 274
Wolfgang Betz 116:1aa0d2da72e4 275 uint8_t i = 0;
Wolfgang Betz 116:1aa0d2da72e4 276 volatile uint8_t tmpreg;
Wolfgang Betz 116:1aa0d2da72e4 277
Wolfgang Betz 117:aff31e70cacc 278 uint8_t header_master[HEADER_SIZE] = {0x0b, 0x00, 0x00, 0x00, 0x00};
Wolfgang Betz 117:aff31e70cacc 279 uint8_t header_slave[HEADER_SIZE];
Wolfgang Betz 116:1aa0d2da72e4 280
Wolfgang Betz 117:aff31e70cacc 281 /* Select the chip */
Wolfgang Betz 117:aff31e70cacc 282 nCS_ = 0;
Wolfgang Betz 116:1aa0d2da72e4 283
Wolfgang Betz 117:aff31e70cacc 284 /* Read the header */
Wolfgang Betz 117:aff31e70cacc 285 for (i = 0; i < 5; i++)
Wolfgang Betz 117:aff31e70cacc 286 {
Wolfgang Betz 117:aff31e70cacc 287 tmpreg = spi_.write(header_master[i]);
Wolfgang Betz 117:aff31e70cacc 288 header_slave[i] = (uint8_t)(tmpreg);
Wolfgang Betz 117:aff31e70cacc 289 }
Wolfgang Betz 116:1aa0d2da72e4 290
Wolfgang Betz 117:aff31e70cacc 291 if (header_slave[0] == 0x02) {
Wolfgang Betz 117:aff31e70cacc 292 /* device is ready */
Wolfgang Betz 117:aff31e70cacc 293 byte_count = (header_slave[4]<<8)|header_slave[3];
Wolfgang Betz 115:3b47df81a56b 294
Wolfgang Betz 117:aff31e70cacc 295 if (byte_count > 0) {
Wolfgang Betz 115:3b47df81a56b 296
Wolfgang Betz 117:aff31e70cacc 297 /* avoid to read more data that size of the buffer */
Wolfgang Betz 117:aff31e70cacc 298 if (byte_count > buff_size){
Wolfgang Betz 117:aff31e70cacc 299 byte_count = buff_size;
Wolfgang Betz 117:aff31e70cacc 300 }
Wolfgang Betz 115:3b47df81a56b 301
Wolfgang Betz 117:aff31e70cacc 302 for (len = 0; len < byte_count; len++){
Wolfgang Betz 117:aff31e70cacc 303 read_char = spi_.write(char_ff);
Wolfgang Betz 116:1aa0d2da72e4 304 buffer[len] = read_char;
Wolfgang Betz 117:aff31e70cacc 305 }
Wolfgang Betz 117:aff31e70cacc 306 }
Wolfgang Betz 117:aff31e70cacc 307 }
Wolfgang Betz 117:aff31e70cacc 308 /* Release CS line to deselect the chip */
Wolfgang Betz 117:aff31e70cacc 309 nCS_ = 1;
Wolfgang Betz 116:1aa0d2da72e4 310
Wolfgang Betz 117:aff31e70cacc 311 // Add a small delay to give time to the BlueNRG to set the IRQ pin low
Wolfgang Betz 117:aff31e70cacc 312 // to avoid a useless SPI read at the end of the transaction
Wolfgang Betz 117:aff31e70cacc 313 for(volatile int i = 0; i < 2; i++)__NOP();
Wolfgang Betz 115:3b47df81a56b 314
Wolfgang Betz 115:3b47df81a56b 315 #ifdef PRINT_CSV_FORMAT
Wolfgang Betz 117:aff31e70cacc 316 if (len > 0) {
Wolfgang Betz 117:aff31e70cacc 317 print_csv_time();
Wolfgang Betz 117:aff31e70cacc 318 for (int i=0; i<len; i++) {
Wolfgang Betz 117:aff31e70cacc 319 PRINT_CSV(" %02x", buffer[i]);
Wolfgang Betz 117:aff31e70cacc 320 }
Wolfgang Betz 117:aff31e70cacc 321 PRINT_CSV("\n");
Wolfgang Betz 117:aff31e70cacc 322 }
Wolfgang Betz 90:26c0c9807ab4 323 #endif
Wolfgang Betz 115:3b47df81a56b 324
Wolfgang Betz 117:aff31e70cacc 325 return len;
Wolfgang Betz 90:26c0c9807ab4 326 }
Wolfgang Betz 116:1aa0d2da72e4 327
Wolfgang Betz 90:26c0c9807ab4 328 /**
Wolfgang Betz 90:26c0c9807ab4 329 * @brief Writes data from local buffer to SPI.
Wolfgang Betz 90:26c0c9807ab4 330 * @param data1 : First data buffer to be written
Wolfgang Betz 90:26c0c9807ab4 331 * @param data2 : Second data buffer to be written
Wolfgang Betz 90:26c0c9807ab4 332 * @param Nb_bytes1: Size of first data buffer to be written
Wolfgang Betz 90:26c0c9807ab4 333 * @param Nb_bytes2: Size of second data buffer to be written
Wolfgang Betz 90:26c0c9807ab4 334 * @retval Number of read bytes
Wolfgang Betz 90:26c0c9807ab4 335 */
Wolfgang Betz 90:26c0c9807ab4 336 int32_t BlueNRGDevice::spiWrite(uint8_t* data1,
Wolfgang Betz 116:1aa0d2da72e4 337 uint8_t* data2, uint8_t Nb_bytes1, uint8_t Nb_bytes2)
Wolfgang Betz 90:26c0c9807ab4 338 {
Wolfgang Betz 116:1aa0d2da72e4 339 int32_t result = 0;
Wolfgang Betz 116:1aa0d2da72e4 340 uint32_t i;
Wolfgang Betz 116:1aa0d2da72e4 341 volatile uint8_t tmpreg;
Wolfgang Betz 115:3b47df81a56b 342
Wolfgang Betz 119:19128d9d254f 343 unsigned char header_master[HEADER_SIZE] = {0x0a, 0x00, 0x00, 0x00, 0x00};
Wolfgang Betz 119:19128d9d254f 344 unsigned char header_slave[HEADER_SIZE] = {0xaa, 0x00, 0x00, 0x00, 0x00};
Wolfgang Betz 116:1aa0d2da72e4 345
Wolfgang Betz 119:19128d9d254f 346 disable_irq();
Wolfgang Betz 119:19128d9d254f 347
Wolfgang Betz 119:19128d9d254f 348 /* CS reset */
Wolfgang Betz 119:19128d9d254f 349 nCS_ = 0;
Wolfgang Betz 116:1aa0d2da72e4 350
Wolfgang Betz 119:19128d9d254f 351 /* Exchange header */
Wolfgang Betz 119:19128d9d254f 352 for (i = 0; i < 5; i++)
Wolfgang Betz 119:19128d9d254f 353 {
Wolfgang Betz 119:19128d9d254f 354 tmpreg = spi_.write(header_master[i]);
Wolfgang Betz 119:19128d9d254f 355 header_slave[i] = tmpreg;
Wolfgang Betz 119:19128d9d254f 356 }
Wolfgang Betz 116:1aa0d2da72e4 357
Wolfgang Betz 119:19128d9d254f 358 if (header_slave[0] == 0x02) {
Wolfgang Betz 119:19128d9d254f 359 /* SPI is ready */
Wolfgang Betz 119:19128d9d254f 360 if (header_slave[1] >= (Nb_bytes1+Nb_bytes2)) {
Wolfgang Betz 115:3b47df81a56b 361
Wolfgang Betz 119:19128d9d254f 362 /* Buffer is big enough */
Wolfgang Betz 116:1aa0d2da72e4 363 for (i = 0; i < Nb_bytes1; i++) {
Wolfgang Betz 116:1aa0d2da72e4 364 spi_.write(*(data1 + i));
Wolfgang Betz 119:19128d9d254f 365 }
Wolfgang Betz 119:19128d9d254f 366 for (i = 0; i < Nb_bytes2; i++) {
Wolfgang Betz 116:1aa0d2da72e4 367 spi_.write(*(data2 + i));
Wolfgang Betz 119:19128d9d254f 368 }
Wolfgang Betz 119:19128d9d254f 369 } else {
Wolfgang Betz 119:19128d9d254f 370 /* Buffer is too small */
Wolfgang Betz 119:19128d9d254f 371 result = -2;
Wolfgang Betz 119:19128d9d254f 372 }
Wolfgang Betz 119:19128d9d254f 373 } else {
Wolfgang Betz 119:19128d9d254f 374 /* SPI is not ready */
Wolfgang Betz 119:19128d9d254f 375 result = -1;
Wolfgang Betz 119:19128d9d254f 376 }
Wolfgang Betz 90:26c0c9807ab4 377
Wolfgang Betz 119:19128d9d254f 378 /* Release CS line */
Wolfgang Betz 119:19128d9d254f 379 //HAL_GPIO_WritePin(BNRG_SPI_CS_PORT, BNRG_SPI_CS_PIN, GPIO_PIN_SET);
Wolfgang Betz 119:19128d9d254f 380 nCS_ = 1;
Wolfgang Betz 116:1aa0d2da72e4 381
Wolfgang Betz 119:19128d9d254f 382 enable_irq();
Wolfgang Betz 90:26c0c9807ab4 383
Wolfgang Betz 119:19128d9d254f 384 return result;
Wolfgang Betz 90:26c0c9807ab4 385 }
Wolfgang Betz 116:1aa0d2da72e4 386
Wolfgang Betz 90:26c0c9807ab4 387 bool BlueNRGDevice::dataPresent()
Wolfgang Betz 90:26c0c9807ab4 388 {
Wolfgang Betz 117:aff31e70cacc 389 return (irq_ == 1);
Wolfgang Betz 90:26c0c9807ab4 390 }
Wolfgang Betz 116:1aa0d2da72e4 391
Wolfgang Betz 90:26c0c9807ab4 392 void BlueNRGDevice::disable_irq()
Wolfgang Betz 90:26c0c9807ab4 393 {
Wolfgang Betz 117:aff31e70cacc 394 irq_.disable_irq();
Wolfgang Betz 90:26c0c9807ab4 395 }
Wolfgang Betz 116:1aa0d2da72e4 396
Wolfgang Betz 90:26c0c9807ab4 397 void BlueNRGDevice::enable_irq()
Wolfgang Betz 90:26c0c9807ab4 398 {
Wolfgang Betz 117:aff31e70cacc 399 irq_.enable_irq();
Wolfgang Betz 90:26c0c9807ab4 400 }