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/I2C.h@51:25d18ad142c8, 2017-03-19 (annotated)

Committer:
mega64
Date:
Sun Mar 19 23:16:34 2017 +0000
Revision:
51:25d18ad142c8
Parent:
0:9b334a45a8ff 
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_I2C_H
bogdanm 0:9b334a45a8ff 17 #define MBED_I2C_H
bogdanm 0:9b334a45a8ff 18
bogdanm 0:9b334a45a8ff 19 #include "platform.h"
bogdanm 0:9b334a45a8ff 20
bogdanm 0:9b334a45a8ff 21 #if DEVICE_I2C
bogdanm 0:9b334a45a8ff 22
mega64 51:25d18ad142c8 23 // for 100F6 not implemented (N.S.)
mega64 51:25d18ad142c8 24 #undef DEVICE_I2C_ASYNCH
mega64 51:25d18ad142c8 25
mega64 51:25d18ad142c8 26
bogdanm 0:9b334a45a8ff 27 #include "i2c_api.h"
bogdanm 0:9b334a45a8ff 28
bogdanm 0:9b334a45a8ff 29 #if DEVICE_I2C_ASYNCH
bogdanm 0:9b334a45a8ff 30 #include "CThunk.h"
bogdanm 0:9b334a45a8ff 31 #include "dma_api.h"
bogdanm 0:9b334a45a8ff 32 #include "FunctionPointer.h"
bogdanm 0:9b334a45a8ff 33 #endif
bogdanm 0:9b334a45a8ff 34
bogdanm 0:9b334a45a8ff 35 namespace mbed {
bogdanm 0:9b334a45a8ff 36
bogdanm 0:9b334a45a8ff 37 /** An I2C Master, used for communicating with I2C slave devices
bogdanm 0:9b334a45a8ff 38 *
bogdanm 0:9b334a45a8ff 39 * Example:
bogdanm 0:9b334a45a8ff 40 * @code
bogdanm 0:9b334a45a8ff 41 * // Read from I2C slave at address 0x62
bogdanm 0:9b334a45a8ff 42 *
bogdanm 0:9b334a45a8ff 43 * #include "mbed.h"
bogdanm 0:9b334a45a8ff 44 *
bogdanm 0:9b334a45a8ff 45 * I2C i2c(p28, p27);
bogdanm 0:9b334a45a8ff 46 *
bogdanm 0:9b334a45a8ff 47 * int main() {
bogdanm 0:9b334a45a8ff 48 * int address = 0x62;
bogdanm 0:9b334a45a8ff 49 * char data[2];
bogdanm 0:9b334a45a8ff 50 * i2c.read(address, data, 2);
bogdanm 0:9b334a45a8ff 51 * }
bogdanm 0:9b334a45a8ff 52 * @endcode
bogdanm 0:9b334a45a8ff 53 */
bogdanm 0:9b334a45a8ff 54 class I2C {
bogdanm 0:9b334a45a8ff 55
bogdanm 0:9b334a45a8ff 56 public:
bogdanm 0:9b334a45a8ff 57 enum RxStatus {
bogdanm 0:9b334a45a8ff 58 NoData,
bogdanm 0:9b334a45a8ff 59 MasterGeneralCall,
bogdanm 0:9b334a45a8ff 60 MasterWrite,
bogdanm 0:9b334a45a8ff 61 MasterRead
bogdanm 0:9b334a45a8ff 62 };
bogdanm 0:9b334a45a8ff 63
bogdanm 0:9b334a45a8ff 64 enum Acknowledge {
bogdanm 0:9b334a45a8ff 65 NoACK = 0,
bogdanm 0:9b334a45a8ff 66 ACK = 1
bogdanm 0:9b334a45a8ff 67 };
bogdanm 0:9b334a45a8ff 68
bogdanm 0:9b334a45a8ff 69 /** Create an I2C Master interface, connected to the specified pins
bogdanm 0:9b334a45a8ff 70 *
bogdanm 0:9b334a45a8ff 71 * @param sda I2C data line pin
bogdanm 0:9b334a45a8ff 72 * @param scl I2C clock line pin
bogdanm 0:9b334a45a8ff 73 */
bogdanm 0:9b334a45a8ff 74 I2C(PinName sda, PinName scl);
bogdanm 0:9b334a45a8ff 75
bogdanm 0:9b334a45a8ff 76 /** Set the frequency of the I2C interface
bogdanm 0:9b334a45a8ff 77 *
bogdanm 0:9b334a45a8ff 78 * @param hz The bus frequency in hertz
bogdanm 0:9b334a45a8ff 79 */
bogdanm 0:9b334a45a8ff 80 void frequency(int hz);
bogdanm 0:9b334a45a8ff 81
bogdanm 0:9b334a45a8ff 82 /** Read from an I2C slave
bogdanm 0:9b334a45a8ff 83 *
bogdanm 0:9b334a45a8ff 84 * Performs a complete read transaction. The bottom bit of
bogdanm 0:9b334a45a8ff 85 * the address is forced to 1 to indicate a read.
bogdanm 0:9b334a45a8ff 86 *
bogdanm 0:9b334a45a8ff 87 * @param address 8-bit I2C slave address [ addr | 1 ]
bogdanm 0:9b334a45a8ff 88 * @param data Pointer to the byte-array to read data in to
bogdanm 0:9b334a45a8ff 89 * @param length Number of bytes to read
bogdanm 0:9b334a45a8ff 90 * @param repeated Repeated start, true - don't send stop at end
bogdanm 0:9b334a45a8ff 91 *
bogdanm 0:9b334a45a8ff 92 * @returns
bogdanm 0:9b334a45a8ff 93 * 0 on success (ack),
bogdanm 0:9b334a45a8ff 94 * non-0 on failure (nack)
bogdanm 0:9b334a45a8ff 95 */
bogdanm 0:9b334a45a8ff 96 int read(int address, char *data, int length, bool repeated = false);
bogdanm 0:9b334a45a8ff 97
bogdanm 0:9b334a45a8ff 98 /** Read a single byte from the I2C bus
bogdanm 0:9b334a45a8ff 99 *
bogdanm 0:9b334a45a8ff 100 * @param ack indicates if the byte is to be acknowledged (1 = acknowledge)
bogdanm 0:9b334a45a8ff 101 *
bogdanm 0:9b334a45a8ff 102 * @returns
bogdanm 0:9b334a45a8ff 103 * the byte read
bogdanm 0:9b334a45a8ff 104 */
bogdanm 0:9b334a45a8ff 105 int read(int ack);
bogdanm 0:9b334a45a8ff 106
bogdanm 0:9b334a45a8ff 107 /** Write to an I2C slave
bogdanm 0:9b334a45a8ff 108 *
bogdanm 0:9b334a45a8ff 109 * Performs a complete write transaction. The bottom bit of
bogdanm 0:9b334a45a8ff 110 * the address is forced to 0 to indicate a write.
bogdanm 0:9b334a45a8ff 111 *
bogdanm 0:9b334a45a8ff 112 * @param address 8-bit I2C slave address [ addr | 0 ]
bogdanm 0:9b334a45a8ff 113 * @param data Pointer to the byte-array data to send
bogdanm 0:9b334a45a8ff 114 * @param length Number of bytes to send
bogdanm 0:9b334a45a8ff 115 * @param repeated Repeated start, true - do not send stop at end
bogdanm 0:9b334a45a8ff 116 *
bogdanm 0:9b334a45a8ff 117 * @returns
bogdanm 0:9b334a45a8ff 118 * 0 on success (ack),
bogdanm 0:9b334a45a8ff 119 * non-0 on failure (nack)
bogdanm 0:9b334a45a8ff 120 */
bogdanm 0:9b334a45a8ff 121 int write(int address, const char *data, int length, bool repeated = false);
bogdanm 0:9b334a45a8ff 122
bogdanm 0:9b334a45a8ff 123 /** Write single byte out on the I2C bus
bogdanm 0:9b334a45a8ff 124 *
bogdanm 0:9b334a45a8ff 125 * @param data data to write out on bus
bogdanm 0:9b334a45a8ff 126 *
bogdanm 0:9b334a45a8ff 127 * @returns
bogdanm 0:9b334a45a8ff 128 * '1' if an ACK was received,
bogdanm 0:9b334a45a8ff 129 * '0' otherwise
bogdanm 0:9b334a45a8ff 130 */
bogdanm 0:9b334a45a8ff 131 int write(int data);
bogdanm 0:9b334a45a8ff 132
bogdanm 0:9b334a45a8ff 133 /** Creates a start condition on the I2C bus
bogdanm 0:9b334a45a8ff 134 */
bogdanm 0:9b334a45a8ff 135
bogdanm 0:9b334a45a8ff 136 void start(void);
bogdanm 0:9b334a45a8ff 137
bogdanm 0:9b334a45a8ff 138 /** Creates a stop condition on the I2C bus
bogdanm 0:9b334a45a8ff 139 */
bogdanm 0:9b334a45a8ff 140 void stop(void);
bogdanm 0:9b334a45a8ff 141
bogdanm 0:9b334a45a8ff 142 #if DEVICE_I2C_ASYNCH
bogdanm 0:9b334a45a8ff 143
bogdanm 0:9b334a45a8ff 144 /** Start non-blocking I2C transfer.
bogdanm 0:9b334a45a8ff 145 *
bogdanm 0:9b334a45a8ff 146 * @param address 8/10 bit I2c slave address
bogdanm 0:9b334a45a8ff 147 * @param tx_buffer The TX buffer with data to be transfered
bogdanm 0:9b334a45a8ff 148 * @param tx_length The length of TX buffer in bytes
bogdanm 0:9b334a45a8ff 149 * @param rx_buffer The RX buffer which is used for received data
bogdanm 0:9b334a45a8ff 150 * @param rx_length The length of RX buffer in bytes
bogdanm 0:9b334a45a8ff 151 * @param event The logical OR of events to modify
bogdanm 0:9b334a45a8ff 152 * @param callback The event callback function
bogdanm 0:9b334a45a8ff 153 * @param repeated Repeated start, true - do not send stop at end
bogdanm 0:9b334a45a8ff 154 * @return Zero if the transfer has started, or -1 if I2C peripheral is busy
bogdanm 0:9b334a45a8ff 155 */
bogdanm 0:9b334a45a8ff 156 int transfer(int address, const char *tx_buffer, int tx_length, char *rx_buffer, int rx_length, const event_callback_t& callback, int event = I2C_EVENT_TRANSFER_COMPLETE, bool repeated = false);
bogdanm 0:9b334a45a8ff 157
bogdanm 0:9b334a45a8ff 158 /** Abort the on-going I2C transfer
bogdanm 0:9b334a45a8ff 159 */
bogdanm 0:9b334a45a8ff 160 void abort_transfer();
bogdanm 0:9b334a45a8ff 161 protected:
bogdanm 0:9b334a45a8ff 162 void irq_handler_asynch(void);
bogdanm 0:9b334a45a8ff 163 event_callback_t _callback;
bogdanm 0:9b334a45a8ff 164 CThunk<I2C> _irq;
bogdanm 0:9b334a45a8ff 165 DMAUsage _usage;
bogdanm 0:9b334a45a8ff 166 #endif
bogdanm 0:9b334a45a8ff 167
bogdanm 0:9b334a45a8ff 168 protected:
bogdanm 0:9b334a45a8ff 169 void aquire();
bogdanm 0:9b334a45a8ff 170
bogdanm 0:9b334a45a8ff 171 i2c_t _i2c;
bogdanm 0:9b334a45a8ff 172 static I2C *_owner;
bogdanm 0:9b334a45a8ff 173 int _hz;
bogdanm 0:9b334a45a8ff 174 };
bogdanm 0:9b334a45a8ff 175
bogdanm 0:9b334a45a8ff 176 } // namespace mbed
bogdanm 0:9b334a45a8ff 177
bogdanm 0:9b334a45a8ff 178 #endif
bogdanm 0:9b334a45a8ff 179
bogdanm 0:9b334a45a8ff 180 #endif