Nothing Special / mbed-STM32F100R6

mbed-dev library fork for STM32F100R6 microcontroller (LQFP64, 24MHz, 32kB flash, 4kB ram, 2-channel DAC, HDMI CEC, very cheap) . Use in online compiler (instead mbed library) with selected platform Nucleo F103RB.

Fork of mbed-dev by mbed official




Tested and working:

  • blink
  • system frequency 24Mhz (with external xtal 8Mhz)
  • stdio uart on pins PA_2-PA_3
  • Serial on pins PA_9-PA_10
  • AnalogOut on pins PA_4, PA_5 (DAC)
  • AnalogIn on pins PA_0, PA_1, PA_2, PA_3, PA_4, PA_5, PA_6, PA_7, PB_0, PB_1, PC_0, PC_1, PC_2, PC_3, PC_5, PC_5


    Notes:
  • TIM2 is used for mbed needs (eq Timer, Ticker, wait etc. )




    Simple test program:

    Import programtestF100R6

    simple tests for STM32F100R6 microcontroller with dedicated library

    Last commit 19 Mar 2017 by Nothing Special

api/SPI.h@51:25d18ad142c8, 2017-03-19 (annotated)

Committer:
mega64
Date:
Sun Mar 19 23:16:34 2017 +0000
Revision:
51:25d18ad142c8
Parent:
50:d2a4a5ee894a 
fixed incompatibility with the modified mbed environment Ch.n+1

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 0:9b334a45a8ff 1 /* mbed Microcontroller Library
bogdanm 0:9b334a45a8ff 2 * Copyright (c) 2006-2015 ARM Limited
bogdanm 0:9b334a45a8ff 3 *
bogdanm 0:9b334a45a8ff 4 * Licensed under the Apache License, Version 2.0 (the "License");
bogdanm 0:9b334a45a8ff 5 * you may not use this file except in compliance with the License.
bogdanm 0:9b334a45a8ff 6 * You may obtain a copy of the License at
bogdanm 0:9b334a45a8ff 7 *
bogdanm 0:9b334a45a8ff 8 * http://www.apache.org/licenses/LICENSE-2.0
bogdanm 0:9b334a45a8ff 9 *
bogdanm 0:9b334a45a8ff 10 * Unless required by applicable law or agreed to in writing, software
bogdanm 0:9b334a45a8ff 11 * distributed under the License is distributed on an "AS IS" BASIS,
bogdanm 0:9b334a45a8ff 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
bogdanm 0:9b334a45a8ff 13 * See the License for the specific language governing permissions and
bogdanm 0:9b334a45a8ff 14 * limitations under the License.
bogdanm 0:9b334a45a8ff 15 */
bogdanm 0:9b334a45a8ff 16 #ifndef MBED_SPI_H
bogdanm 0:9b334a45a8ff 17 #define MBED_SPI_H
bogdanm 0:9b334a45a8ff 18
bogdanm 0:9b334a45a8ff 19 #include "platform.h"
bogdanm 0:9b334a45a8ff 20
mega64 50:d2a4a5ee894a 21 // for 100F6 not implemented (N.S.)
mega64 50:d2a4a5ee894a 22 #undef DEVICE_SPI_ASYNCH
mega64 50:d2a4a5ee894a 23
mega64 50:d2a4a5ee894a 24
bogdanm 0:9b334a45a8ff 25 #if DEVICE_SPI
bogdanm 0:9b334a45a8ff 26
bogdanm 0:9b334a45a8ff 27 #include "spi_api.h"
bogdanm 0:9b334a45a8ff 28
bogdanm 0:9b334a45a8ff 29 #if DEVICE_SPI_ASYNCH
bogdanm 0:9b334a45a8ff 30 #include "CThunk.h"
bogdanm 0:9b334a45a8ff 31 #include "dma_api.h"
bogdanm 0:9b334a45a8ff 32 #include "CircularBuffer.h"
bogdanm 0:9b334a45a8ff 33 #include "FunctionPointer.h"
bogdanm 0:9b334a45a8ff 34 #include "Transaction.h"
bogdanm 0:9b334a45a8ff 35 #endif
bogdanm 0:9b334a45a8ff 36
bogdanm 0:9b334a45a8ff 37 namespace mbed {
bogdanm 0:9b334a45a8ff 38
bogdanm 0:9b334a45a8ff 39 /** A SPI Master, used for communicating with SPI slave devices
bogdanm 0:9b334a45a8ff 40 *
bogdanm 0:9b334a45a8ff 41 * The default format is set to 8-bits, mode 0, and a clock frequency of 1MHz
bogdanm 0:9b334a45a8ff 42 *
bogdanm 0:9b334a45a8ff 43 * Most SPI devices will also require Chip Select and Reset signals. These
bogdanm 0:9b334a45a8ff 44 * can be controlled using <DigitalOut> pins
bogdanm 0:9b334a45a8ff 45 *
bogdanm 0:9b334a45a8ff 46 * Example:
bogdanm 0:9b334a45a8ff 47 * @code
bogdanm 0:9b334a45a8ff 48 * // Send a byte to a SPI slave, and record the response
bogdanm 0:9b334a45a8ff 49 *
bogdanm 0:9b334a45a8ff 50 * #include "mbed.h"
bogdanm 0:9b334a45a8ff 51 *
bogdanm 0:9b334a45a8ff 52 * // hardware ssel (where applicable)
bogdanm 0:9b334a45a8ff 53 * //SPI device(p5, p6, p7, p8); // mosi, miso, sclk, ssel
bogdanm 0:9b334a45a8ff 54 *
bogdanm 0:9b334a45a8ff 55 * // software ssel
bogdanm 0:9b334a45a8ff 56 * SPI device(p5, p6, p7); // mosi, miso, sclk
bogdanm 0:9b334a45a8ff 57 * DigitalOut cs(p8); // ssel
bogdanm 0:9b334a45a8ff 58 *
bogdanm 0:9b334a45a8ff 59 * int main() {
bogdanm 0:9b334a45a8ff 60 * // hardware ssel (where applicable)
bogdanm 0:9b334a45a8ff 61 * //int response = device.write(0xFF);
bogdanm 0:9b334a45a8ff 62 *
bogdanm 0:9b334a45a8ff 63 * // software ssel
bogdanm 0:9b334a45a8ff 64 * cs = 0;
bogdanm 0:9b334a45a8ff 65 * int response = device.write(0xFF);
bogdanm 0:9b334a45a8ff 66 * cs = 1;
bogdanm 0:9b334a45a8ff 67 * }
bogdanm 0:9b334a45a8ff 68 * @endcode
bogdanm 0:9b334a45a8ff 69 */
bogdanm 0:9b334a45a8ff 70 class SPI {
bogdanm 0:9b334a45a8ff 71
bogdanm 0:9b334a45a8ff 72 public:
bogdanm 0:9b334a45a8ff 73
bogdanm 0:9b334a45a8ff 74 /** Create a SPI master connected to the specified pins
bogdanm 0:9b334a45a8ff 75 *
bogdanm 0:9b334a45a8ff 76 * mosi or miso can be specfied as NC if not used
bogdanm 0:9b334a45a8ff 77 *
bogdanm 0:9b334a45a8ff 78 * @param mosi SPI Master Out, Slave In pin
bogdanm 0:9b334a45a8ff 79 * @param miso SPI Master In, Slave Out pin
bogdanm 0:9b334a45a8ff 80 * @param sclk SPI Clock pin
bogdanm 0:9b334a45a8ff 81 * @param ssel SPI chip select pin
bogdanm 0:9b334a45a8ff 82 */
bogdanm 0:9b334a45a8ff 83 SPI(PinName mosi, PinName miso, PinName sclk, PinName ssel=NC);
bogdanm 0:9b334a45a8ff 84
bogdanm 0:9b334a45a8ff 85 /** Configure the data transmission format
bogdanm 0:9b334a45a8ff 86 *
bogdanm 0:9b334a45a8ff 87 * @param bits Number of bits per SPI frame (4 - 16)
bogdanm 0:9b334a45a8ff 88 * @param mode Clock polarity and phase mode (0 - 3)
bogdanm 0:9b334a45a8ff 89 *
bogdanm 0:9b334a45a8ff 90 * @code
bogdanm 0:9b334a45a8ff 91 * mode | POL PHA
bogdanm 0:9b334a45a8ff 92 * -----+--------
bogdanm 0:9b334a45a8ff 93 * 0 | 0 0
bogdanm 0:9b334a45a8ff 94 * 1 | 0 1
bogdanm 0:9b334a45a8ff 95 * 2 | 1 0
bogdanm 0:9b334a45a8ff 96 * 3 | 1 1
bogdanm 0:9b334a45a8ff 97 * @endcode
bogdanm 0:9b334a45a8ff 98 */
bogdanm 0:9b334a45a8ff 99 void format(int bits, int mode = 0);
bogdanm 0:9b334a45a8ff 100
bogdanm 0:9b334a45a8ff 101 /** Set the spi bus clock frequency
bogdanm 0:9b334a45a8ff 102 *
bogdanm 0:9b334a45a8ff 103 * @param hz SCLK frequency in hz (default = 1MHz)
bogdanm 0:9b334a45a8ff 104 */
bogdanm 0:9b334a45a8ff 105 void frequency(int hz = 1000000);
bogdanm 0:9b334a45a8ff 106
bogdanm 0:9b334a45a8ff 107 /** Write to the SPI Slave and return the response
bogdanm 0:9b334a45a8ff 108 *
bogdanm 0:9b334a45a8ff 109 * @param value Data to be sent to the SPI slave
bogdanm 0:9b334a45a8ff 110 *
bogdanm 0:9b334a45a8ff 111 * @returns
bogdanm 0:9b334a45a8ff 112 * Response from the SPI slave
bogdanm 0:9b334a45a8ff 113 */
bogdanm 0:9b334a45a8ff 114 virtual int write(int value);
bogdanm 0:9b334a45a8ff 115
bogdanm 0:9b334a45a8ff 116 #if DEVICE_SPI_ASYNCH
bogdanm 0:9b334a45a8ff 117
bogdanm 0:9b334a45a8ff 118 /** Start non-blocking SPI transfer using 8bit buffers.
bogdanm 0:9b334a45a8ff 119 *
bogdanm 0:9b334a45a8ff 120 * @param tx_buffer The TX buffer with data to be transfered. If NULL is passed,
bogdanm 0:9b334a45a8ff 121 * the default SPI value is sent
bogdanm 0:9b334a45a8ff 122 * @param tx_length The length of TX buffer in bytes
bogdanm 0:9b334a45a8ff 123 * @param rx_buffer The RX buffer which is used for received data. If NULL is passed,
bogdanm 0:9b334a45a8ff 124 * received data are ignored
bogdanm 0:9b334a45a8ff 125 * @param rx_length The length of RX buffer in bytes
bogdanm 0:9b334a45a8ff 126 * @param callback The event callback function
bogdanm 0:9b334a45a8ff 127 * @param event The logical OR of events to modify. Look at spi hal header file for SPI events.
bogdanm 0:9b334a45a8ff 128 * @return Zero if the transfer has started, or -1 if SPI peripheral is busy
bogdanm 0:9b334a45a8ff 129 */
bogdanm 0:9b334a45a8ff 130 template<typename Type>
bogdanm 0:9b334a45a8ff 131 int transfer(const Type *tx_buffer, int tx_length, Type *rx_buffer, int rx_length, const event_callback_t& callback, int event = SPI_EVENT_COMPLETE) {
bogdanm 0:9b334a45a8ff 132 if (spi_active(&_spi)) {
bogdanm 0:9b334a45a8ff 133 return queue_transfer(tx_buffer, tx_length, rx_buffer, rx_length, sizeof(Type)*8, callback, event);
bogdanm 0:9b334a45a8ff 134 }
bogdanm 0:9b334a45a8ff 135 start_transfer(tx_buffer, tx_length, rx_buffer, rx_length, sizeof(Type)*8, callback, event);
bogdanm 0:9b334a45a8ff 136 return 0;
bogdanm 0:9b334a45a8ff 137 }
bogdanm 0:9b334a45a8ff 138
bogdanm 0:9b334a45a8ff 139 /** Abort the on-going SPI transfer, and continue with transfer's in the queue if any.
bogdanm 0:9b334a45a8ff 140 */
bogdanm 0:9b334a45a8ff 141 void abort_transfer();
bogdanm 0:9b334a45a8ff 142
bogdanm 0:9b334a45a8ff 143 /** Clear the transaction buffer
bogdanm 0:9b334a45a8ff 144 */
bogdanm 0:9b334a45a8ff 145 void clear_transfer_buffer();
bogdanm 0:9b334a45a8ff 146
bogdanm 0:9b334a45a8ff 147 /** Clear the transaction buffer and abort on-going transfer.
bogdanm 0:9b334a45a8ff 148 */
bogdanm 0:9b334a45a8ff 149 void abort_all_transfers();
bogdanm 0:9b334a45a8ff 150
bogdanm 0:9b334a45a8ff 151 /** Configure DMA usage suggestion for non-blocking transfers
bogdanm 0:9b334a45a8ff 152 *
bogdanm 0:9b334a45a8ff 153 * @param usage The usage DMA hint for peripheral
bogdanm 0:9b334a45a8ff 154 * @return Zero if the usage was set, -1 if a transaction is on-going
bogdanm 0:9b334a45a8ff 155 */
bogdanm 0:9b334a45a8ff 156 int set_dma_usage(DMAUsage usage);
bogdanm 0:9b334a45a8ff 157
bogdanm 0:9b334a45a8ff 158 protected:
bogdanm 0:9b334a45a8ff 159 /** SPI IRQ handler
bogdanm 0:9b334a45a8ff 160 *
bogdanm 0:9b334a45a8ff 161 */
bogdanm 0:9b334a45a8ff 162 void irq_handler_asynch(void);
bogdanm 0:9b334a45a8ff 163
bogdanm 0:9b334a45a8ff 164 /** Common transfer method
bogdanm 0:9b334a45a8ff 165 *
bogdanm 0:9b334a45a8ff 166 * @param tx_buffer The TX buffer with data to be transfered. If NULL is passed,
bogdanm 0:9b334a45a8ff 167 * the default SPI value is sent
bogdanm 0:9b334a45a8ff 168 * @param tx_length The length of TX buffer in bytes
bogdanm 0:9b334a45a8ff 169 * @param rx_buffer The RX buffer which is used for received data. If NULL is passed,
bogdanm 0:9b334a45a8ff 170 * received data are ignored
bogdanm 0:9b334a45a8ff 171 * @param rx_length The length of RX buffer in bytes
bogdanm 0:9b334a45a8ff 172 * @param bit_width The buffers element width
bogdanm 0:9b334a45a8ff 173 * @param callback The event callback function
bogdanm 0:9b334a45a8ff 174 * @param event The logical OR of events to modify
bogdanm 0:9b334a45a8ff 175 * @return Zero if the transfer has started or was added to the queue, or -1 if SPI peripheral is busy/buffer is full
bogdanm 0:9b334a45a8ff 176 */
bogdanm 0:9b334a45a8ff 177 int transfer(const void *tx_buffer, int tx_length, void *rx_buffer, int rx_length, unsigned char bit_width, const event_callback_t& callback, int event);
bogdanm 0:9b334a45a8ff 178
bogdanm 0:9b334a45a8ff 179 /**
bogdanm 0:9b334a45a8ff 180 *
bogdanm 0:9b334a45a8ff 181 * @param tx_buffer The TX buffer with data to be transfered. If NULL is passed,
bogdanm 0:9b334a45a8ff 182 * the default SPI value is sent
bogdanm 0:9b334a45a8ff 183 * @param tx_length The length of TX buffer in bytes
bogdanm 0:9b334a45a8ff 184 * @param rx_buffer The RX buffer which is used for received data. If NULL is passed,
bogdanm 0:9b334a45a8ff 185 * received data are ignored
bogdanm 0:9b334a45a8ff 186 * @param rx_length The length of RX buffer in bytes
bogdanm 0:9b334a45a8ff 187 * @param bit_width The buffers element width
bogdanm 0:9b334a45a8ff 188 * @param callback The event callback function
bogdanm 0:9b334a45a8ff 189 * @param event The logical OR of events to modify
bogdanm 0:9b334a45a8ff 190 * @return Zero if a transfer was added to the queue, or -1 if the queue is full
bogdanm 0:9b334a45a8ff 191 */
bogdanm 0:9b334a45a8ff 192 int queue_transfer(const void *tx_buffer, int tx_length, void *rx_buffer, int rx_length, unsigned char bit_width, const event_callback_t& callback, int event);
bogdanm 0:9b334a45a8ff 193
bogdanm 0:9b334a45a8ff 194 /** Configures a callback, spi peripheral and initiate a new transfer
bogdanm 0:9b334a45a8ff 195 *
bogdanm 0:9b334a45a8ff 196 * @param tx_buffer The TX buffer with data to be transfered. If NULL is passed,
bogdanm 0:9b334a45a8ff 197 * the default SPI value is sent
bogdanm 0:9b334a45a8ff 198 * @param tx_length The length of TX buffer in bytes
bogdanm 0:9b334a45a8ff 199 * @param rx_buffer The RX buffer which is used for received data. If NULL is passed,
bogdanm 0:9b334a45a8ff 200 * received data are ignored
bogdanm 0:9b334a45a8ff 201 * @param rx_length The length of RX buffer in bytes
bogdanm 0:9b334a45a8ff 202 * @param bit_width The buffers element width
bogdanm 0:9b334a45a8ff 203 * @param callback The event callback function
bogdanm 0:9b334a45a8ff 204 * @param event The logical OR of events to modify
bogdanm 0:9b334a45a8ff 205 */
bogdanm 0:9b334a45a8ff 206 void start_transfer(const void *tx_buffer, int tx_length, void *rx_buffer, int rx_length, unsigned char bit_width, const event_callback_t& callback, int event);
bogdanm 0:9b334a45a8ff 207
bogdanm 0:9b334a45a8ff 208 #if TRANSACTION_QUEUE_SIZE_SPI
bogdanm 0:9b334a45a8ff 209
bogdanm 0:9b334a45a8ff 210 /** Start a new transaction
bogdanm 0:9b334a45a8ff 211 *
bogdanm 0:9b334a45a8ff 212 * @param data Transaction data
bogdanm 0:9b334a45a8ff 213 */
bogdanm 0:9b334a45a8ff 214 void start_transaction(transaction_t *data);
bogdanm 0:9b334a45a8ff 215
bogdanm 0:9b334a45a8ff 216 /** Dequeue a transaction
bogdanm 0:9b334a45a8ff 217 *
bogdanm 0:9b334a45a8ff 218 */
bogdanm 0:9b334a45a8ff 219 void dequeue_transaction();
bogdanm 0:9b334a45a8ff 220 static CircularBuffer<Transaction<SPI>, TRANSACTION_QUEUE_SIZE_SPI> _transaction_buffer;
bogdanm 0:9b334a45a8ff 221 #endif
bogdanm 0:9b334a45a8ff 222
bogdanm 0:9b334a45a8ff 223 #endif
bogdanm 0:9b334a45a8ff 224
bogdanm 0:9b334a45a8ff 225 public:
bogdanm 0:9b334a45a8ff 226 virtual ~SPI() {
bogdanm 0:9b334a45a8ff 227 }
bogdanm 0:9b334a45a8ff 228
bogdanm 0:9b334a45a8ff 229 protected:
bogdanm 0:9b334a45a8ff 230 spi_t _spi;
bogdanm 0:9b334a45a8ff 231
bogdanm 0:9b334a45a8ff 232 #if DEVICE_SPI_ASYNCH
bogdanm 0:9b334a45a8ff 233 CThunk<SPI> _irq;
bogdanm 0:9b334a45a8ff 234 event_callback_t _callback;
bogdanm 0:9b334a45a8ff 235 DMAUsage _usage;
bogdanm 0:9b334a45a8ff 236 #endif
bogdanm 0:9b334a45a8ff 237
bogdanm 0:9b334a45a8ff 238 void aquire(void);
bogdanm 0:9b334a45a8ff 239 static SPI *_owner;
bogdanm 0:9b334a45a8ff 240 int _bits;
bogdanm 0:9b334a45a8ff 241 int _mode;
bogdanm 0:9b334a45a8ff 242 int _hz;
bogdanm 0:9b334a45a8ff 243 };
bogdanm 0:9b334a45a8ff 244
bogdanm 0:9b334a45a8ff 245 } // namespace mbed
bogdanm 0:9b334a45a8ff 246
bogdanm 0:9b334a45a8ff 247 #endif
bogdanm 0:9b334a45a8ff 248
bogdanm 0:9b334a45a8ff 249 #endif