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/I2CSlave.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) 2006-2013 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_SLAVE_H
bogdanm 0:9b334a45a8ff 17 #define MBED_I2C_SLAVE_H
bogdanm 0:9b334a45a8ff 18
bogdanm 0:9b334a45a8ff 19 #include "platform.h"
bogdanm 0:9b334a45a8ff 20
bogdanm 0:9b334a45a8ff 21 #if DEVICE_I2CSLAVE
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 namespace mbed {
bogdanm 0:9b334a45a8ff 30
bogdanm 0:9b334a45a8ff 31 /** An I2C Slave, used for communicating with an I2C Master device
bogdanm 0:9b334a45a8ff 32 *
bogdanm 0:9b334a45a8ff 33 * Example:
bogdanm 0:9b334a45a8ff 34 * @code
bogdanm 0:9b334a45a8ff 35 * // Simple I2C responder
bogdanm 0:9b334a45a8ff 36 * #include <mbed.h>
bogdanm 0:9b334a45a8ff 37 *
bogdanm 0:9b334a45a8ff 38 * I2CSlave slave(p9, p10);
bogdanm 0:9b334a45a8ff 39 *
bogdanm 0:9b334a45a8ff 40 * int main() {
bogdanm 0:9b334a45a8ff 41 * char buf[10];
bogdanm 0:9b334a45a8ff 42 * char msg[] = "Slave!";
bogdanm 0:9b334a45a8ff 43 *
bogdanm 0:9b334a45a8ff 44 * slave.address(0xA0);
bogdanm 0:9b334a45a8ff 45 * while (1) {
bogdanm 0:9b334a45a8ff 46 * int i = slave.receive();
bogdanm 0:9b334a45a8ff 47 * switch (i) {
bogdanm 0:9b334a45a8ff 48 * case I2CSlave::ReadAddressed:
bogdanm 0:9b334a45a8ff 49 * slave.write(msg, strlen(msg) + 1); // Includes null char
bogdanm 0:9b334a45a8ff 50 * break;
bogdanm 0:9b334a45a8ff 51 * case I2CSlave::WriteGeneral:
bogdanm 0:9b334a45a8ff 52 * slave.read(buf, 10);
bogdanm 0:9b334a45a8ff 53 * printf("Read G: %s\n", buf);
bogdanm 0:9b334a45a8ff 54 * break;
bogdanm 0:9b334a45a8ff 55 * case I2CSlave::WriteAddressed:
bogdanm 0:9b334a45a8ff 56 * slave.read(buf, 10);
bogdanm 0:9b334a45a8ff 57 * printf("Read A: %s\n", buf);
bogdanm 0:9b334a45a8ff 58 * break;
bogdanm 0:9b334a45a8ff 59 * }
bogdanm 0:9b334a45a8ff 60 * for(int i = 0; i < 10; i++) buf[i] = 0; // Clear buffer
bogdanm 0:9b334a45a8ff 61 * }
bogdanm 0:9b334a45a8ff 62 * }
bogdanm 0:9b334a45a8ff 63 * @endcode
bogdanm 0:9b334a45a8ff 64 */
bogdanm 0:9b334a45a8ff 65 class I2CSlave {
bogdanm 0:9b334a45a8ff 66
bogdanm 0:9b334a45a8ff 67 public:
bogdanm 0:9b334a45a8ff 68 enum RxStatus {
bogdanm 0:9b334a45a8ff 69 NoData = 0,
bogdanm 0:9b334a45a8ff 70 ReadAddressed = 1,
bogdanm 0:9b334a45a8ff 71 WriteGeneral = 2,
bogdanm 0:9b334a45a8ff 72 WriteAddressed = 3
bogdanm 0:9b334a45a8ff 73 };
bogdanm 0:9b334a45a8ff 74
bogdanm 0:9b334a45a8ff 75 /** Create an I2C Slave interface, connected to the specified pins.
bogdanm 0:9b334a45a8ff 76 *
bogdanm 0:9b334a45a8ff 77 * @param sda I2C data line pin
bogdanm 0:9b334a45a8ff 78 * @param scl I2C clock line pin
bogdanm 0:9b334a45a8ff 79 */
bogdanm 0:9b334a45a8ff 80 I2CSlave(PinName sda, PinName scl);
bogdanm 0:9b334a45a8ff 81
bogdanm 0:9b334a45a8ff 82 /** Set the frequency of the I2C interface
bogdanm 0:9b334a45a8ff 83 *
bogdanm 0:9b334a45a8ff 84 * @param hz The bus frequency in hertz
bogdanm 0:9b334a45a8ff 85 */
bogdanm 0:9b334a45a8ff 86 void frequency(int hz);
bogdanm 0:9b334a45a8ff 87
bogdanm 0:9b334a45a8ff 88 /** Checks to see if this I2C Slave has been addressed.
bogdanm 0:9b334a45a8ff 89 *
bogdanm 0:9b334a45a8ff 90 * @returns
bogdanm 0:9b334a45a8ff 91 * A status indicating if the device has been addressed, and how
bogdanm 0:9b334a45a8ff 92 * - NoData - the slave has not been addressed
bogdanm 0:9b334a45a8ff 93 * - ReadAddressed - the master has requested a read from this slave
bogdanm 0:9b334a45a8ff 94 * - WriteAddressed - the master is writing to this slave
bogdanm 0:9b334a45a8ff 95 * - WriteGeneral - the master is writing to all slave
bogdanm 0:9b334a45a8ff 96 */
bogdanm 0:9b334a45a8ff 97 int receive(void);
bogdanm 0:9b334a45a8ff 98
bogdanm 0:9b334a45a8ff 99 /** Read from an I2C master.
bogdanm 0:9b334a45a8ff 100 *
bogdanm 0:9b334a45a8ff 101 * @param data pointer to the byte array to read data in to
bogdanm 0:9b334a45a8ff 102 * @param length maximum number of bytes to read
bogdanm 0:9b334a45a8ff 103 *
bogdanm 0:9b334a45a8ff 104 * @returns
bogdanm 0:9b334a45a8ff 105 * 0 on success,
bogdanm 0:9b334a45a8ff 106 * non-0 otherwise
bogdanm 0:9b334a45a8ff 107 */
bogdanm 0:9b334a45a8ff 108 int read(char *data, int length);
bogdanm 0:9b334a45a8ff 109
bogdanm 0:9b334a45a8ff 110 /** Read a single byte from an I2C master.
bogdanm 0:9b334a45a8ff 111 *
bogdanm 0:9b334a45a8ff 112 * @returns
bogdanm 0:9b334a45a8ff 113 * the byte read
bogdanm 0:9b334a45a8ff 114 */
bogdanm 0:9b334a45a8ff 115 int read(void);
bogdanm 0:9b334a45a8ff 116
bogdanm 0:9b334a45a8ff 117 /** Write to an I2C master.
bogdanm 0:9b334a45a8ff 118 *
bogdanm 0:9b334a45a8ff 119 * @param data pointer to the byte array to be transmitted
bogdanm 0:9b334a45a8ff 120 * @param length the number of bytes to transmite
bogdanm 0:9b334a45a8ff 121 *
bogdanm 0:9b334a45a8ff 122 * @returns
bogdanm 0:9b334a45a8ff 123 * 0 on success,
bogdanm 0:9b334a45a8ff 124 * non-0 otherwise
bogdanm 0:9b334a45a8ff 125 */
bogdanm 0:9b334a45a8ff 126 int write(const char *data, int length);
bogdanm 0:9b334a45a8ff 127
bogdanm 0:9b334a45a8ff 128 /** Write a single byte to an I2C master.
bogdanm 0:9b334a45a8ff 129 *
bogdanm 0:9b334a45a8ff 130 * @data the byte to write
bogdanm 0:9b334a45a8ff 131 *
bogdanm 0:9b334a45a8ff 132 * @returns
bogdanm 0:9b334a45a8ff 133 * '1' if an ACK was received,
bogdanm 0:9b334a45a8ff 134 * '0' otherwise
bogdanm 0:9b334a45a8ff 135 */
bogdanm 0:9b334a45a8ff 136 int write(int data);
bogdanm 0:9b334a45a8ff 137
bogdanm 0:9b334a45a8ff 138 /** Sets the I2C slave address.
bogdanm 0:9b334a45a8ff 139 *
bogdanm 0:9b334a45a8ff 140 * @param address The address to set for the slave (ignoring the least
bogdanm 0:9b334a45a8ff 141 * signifcant bit). If set to 0, the slave will only respond to the
bogdanm 0:9b334a45a8ff 142 * general call address.
bogdanm 0:9b334a45a8ff 143 */
bogdanm 0:9b334a45a8ff 144 void address(int address);
bogdanm 0:9b334a45a8ff 145
bogdanm 0:9b334a45a8ff 146 /** Reset the I2C slave back into the known ready receiving state.
bogdanm 0:9b334a45a8ff 147 */
bogdanm 0:9b334a45a8ff 148 void stop(void);
bogdanm 0:9b334a45a8ff 149
bogdanm 0:9b334a45a8ff 150 protected:
bogdanm 0:9b334a45a8ff 151 i2c_t _i2c;
bogdanm 0:9b334a45a8ff 152 };
bogdanm 0:9b334a45a8ff 153
bogdanm 0:9b334a45a8ff 154 } // namespace mbed
bogdanm 0:9b334a45a8ff 155
bogdanm 0:9b334a45a8ff 156 #endif
bogdanm 0:9b334a45a8ff 157
bogdanm 0:9b334a45a8ff 158 #endif