Tami Farber / microbit-dal

Revised to disable BLE for radio communication as needed.

Dependencies:   BLE_API nRF51822 mbed-dev-bin

Dependents:   microbit

inc/drivers/MicroBitI2C.h@74:26717338739d, 2019-11-26 (annotated)

Committer:
tsfarber
Date:
Tue Nov 26 04:12:46 2019 +0000
Revision:
74:26717338739d
Parent:
4:9fbeeb89de59 
This program combines samples programs radio TX and radio RX so that both units can send or receive depending on which unit's buttons are pressed. Tested successfully. MicroBitConfig.h has been edited to disable BLE.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Jonathan Austin 1:8aa5cdb4ab67 1 /*
Jonathan Austin 1:8aa5cdb4ab67 2 The MIT License (MIT)
Jonathan Austin 1:8aa5cdb4ab67 3
Jonathan Austin 1:8aa5cdb4ab67 4 Copyright (c) 2016 British Broadcasting Corporation.
Jonathan Austin 1:8aa5cdb4ab67 5 This software is provided by Lancaster University by arrangement with the BBC.
Jonathan Austin 1:8aa5cdb4ab67 6
Jonathan Austin 1:8aa5cdb4ab67 7 Permission is hereby granted, free of charge, to any person obtaining a
Jonathan Austin 1:8aa5cdb4ab67 8 copy of this software and associated documentation files (the "Software"),
Jonathan Austin 1:8aa5cdb4ab67 9 to deal in the Software without restriction, including without limitation
Jonathan Austin 1:8aa5cdb4ab67 10 the rights to use, copy, modify, merge, publish, distribute, sublicense,
Jonathan Austin 1:8aa5cdb4ab67 11 and/or sell copies of the Software, and to permit persons to whom the
Jonathan Austin 1:8aa5cdb4ab67 12 Software is furnished to do so, subject to the following conditions:
Jonathan Austin 1:8aa5cdb4ab67 13
Jonathan Austin 1:8aa5cdb4ab67 14 The above copyright notice and this permission notice shall be included in
Jonathan Austin 1:8aa5cdb4ab67 15 all copies or substantial portions of the Software.
Jonathan Austin 1:8aa5cdb4ab67 16
Jonathan Austin 1:8aa5cdb4ab67 17 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
Jonathan Austin 1:8aa5cdb4ab67 18 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
Jonathan Austin 1:8aa5cdb4ab67 19 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
Jonathan Austin 1:8aa5cdb4ab67 20 THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
Jonathan Austin 1:8aa5cdb4ab67 21 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
Jonathan Austin 1:8aa5cdb4ab67 22 FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
Jonathan Austin 1:8aa5cdb4ab67 23 DEALINGS IN THE SOFTWARE.
Jonathan Austin 1:8aa5cdb4ab67 24 */
Jonathan Austin 1:8aa5cdb4ab67 25
Jonathan Austin 1:8aa5cdb4ab67 26 #ifndef MICROBIT_I2C_H
Jonathan Austin 1:8aa5cdb4ab67 27 #define MICROBIT_I2C_H
Jonathan Austin 1:8aa5cdb4ab67 28
Jonathan Austin 1:8aa5cdb4ab67 29 #include "mbed.h"
Jonathan Austin 1:8aa5cdb4ab67 30 #include "MicroBitConfig.h"
Jonathan Austin 1:8aa5cdb4ab67 31
Jonathan Austin 1:8aa5cdb4ab67 32 #define MICROBIT_I2C_MAX_RETRIES 9
Jonathan Austin 1:8aa5cdb4ab67 33
Jonathan Austin 1:8aa5cdb4ab67 34 /**
Jonathan Austin 1:8aa5cdb4ab67 35 * Class definition for MicroBitI2C.
Jonathan Austin 1:8aa5cdb4ab67 36 *
Jonathan Austin 1:8aa5cdb4ab67 37 * Presents a wrapped mbed call to capture failed I2C operations caused by a known silicon bug in the nrf51822.
Jonathan Austin 1:8aa5cdb4ab67 38 * Attempts to automatically reset and restart the I2C hardware if this case is detected.
Jonathan Austin 1:8aa5cdb4ab67 39 *
Jonathan Austin 1:8aa5cdb4ab67 40 * For reference see PAN56 in:
Jonathan Austin 1:8aa5cdb4ab67 41 *
Jonathan Austin 1:8aa5cdb4ab67 42 * https://www.nordicsemi.com/eng/nordic/Products/nRF51822/PAN-nRF51822/24634
Jonathan Austin 1:8aa5cdb4ab67 43 *
Jonathan Austin 1:8aa5cdb4ab67 44 * v2.0 through to v2.4
Jonathan Austin 1:8aa5cdb4ab67 45 */
Jonathan Austin 1:8aa5cdb4ab67 46 class MicroBitI2C : public I2C
Jonathan Austin 1:8aa5cdb4ab67 47 {
Jonathan Austin 1:8aa5cdb4ab67 48 uint8_t retries;
Jonathan Austin 1:8aa5cdb4ab67 49
Jonathan Austin 1:8aa5cdb4ab67 50 public:
Jonathan Austin 1:8aa5cdb4ab67 51
Jonathan Austin 1:8aa5cdb4ab67 52 /**
Jonathan Austin 1:8aa5cdb4ab67 53 * Constructor.
Jonathan Austin 1:8aa5cdb4ab67 54 *
Jonathan Austin 1:8aa5cdb4ab67 55 * Create an instance of MicroBitI2C for I2C communication.
Jonathan Austin 1:8aa5cdb4ab67 56 *
Jonathan Austin 1:8aa5cdb4ab67 57 * @param sda the Pin to be used for SDA
Jonathan Austin 1:8aa5cdb4ab67 58 *
Jonathan Austin 1:8aa5cdb4ab67 59 * @param scl the Pin to be used for SCL
Jonathan Austin 1:8aa5cdb4ab67 60 *
Jonathan Austin 1:8aa5cdb4ab67 61 * @code
Jonathan Austin 1:8aa5cdb4ab67 62 * MicroBitI2C i2c(I2C_SDA0, I2C_SCL0);
Jonathan Austin 1:8aa5cdb4ab67 63 * @endcode
Jonathan Austin 1:8aa5cdb4ab67 64 *
Jonathan Austin 1:8aa5cdb4ab67 65 * @note This class presents a wrapped mbed call to capture failed I2C operations caused by a known silicon bug in the nrf51822.
Jonathan Austin 1:8aa5cdb4ab67 66 * Attempts to automatically reset and restart the I2C hardware if this case is detected.
LancasterUniversity 4:9fbeeb89de59 67 * \par
Jonathan Austin 1:8aa5cdb4ab67 68 * For reference see PAN56 in:
LancasterUniversity 4:9fbeeb89de59 69 * \par
Jonathan Austin 1:8aa5cdb4ab67 70 * https://www.nordicsemi.com/eng/nordic/Products/nRF51822/PAN-nRF51822/24634
LancasterUniversity 4:9fbeeb89de59 71 * \par
Jonathan Austin 1:8aa5cdb4ab67 72 * v2.0 through to v2.4
Jonathan Austin 1:8aa5cdb4ab67 73 */
Jonathan Austin 1:8aa5cdb4ab67 74 MicroBitI2C(PinName sda, PinName scl);
Jonathan Austin 1:8aa5cdb4ab67 75
Jonathan Austin 1:8aa5cdb4ab67 76 /**
Jonathan Austin 1:8aa5cdb4ab67 77 * Performs a complete read transaction. The bottom bit of the address is forced to 1 to indicate a read.
Jonathan Austin 1:8aa5cdb4ab67 78 *
Jonathan Austin 1:8aa5cdb4ab67 79 * @param address 8-bit I2C slave address [ addr | 1 ]
Jonathan Austin 1:8aa5cdb4ab67 80 *
Jonathan Austin 1:8aa5cdb4ab67 81 * @param data A pointer to a byte buffer used for storing retrieved data.
Jonathan Austin 1:8aa5cdb4ab67 82 *
Jonathan Austin 1:8aa5cdb4ab67 83 * @param length Number of bytes to read.
Jonathan Austin 1:8aa5cdb4ab67 84 *
Jonathan Austin 1:8aa5cdb4ab67 85 * @param repeated if true, stop is not sent at the end. Defaults to false.
Jonathan Austin 1:8aa5cdb4ab67 86 *
Jonathan Austin 1:8aa5cdb4ab67 87 * @return MICROBIT_OK on success, MICROBIT_I2C_ERROR if an unresolved read failure is detected.
Jonathan Austin 1:8aa5cdb4ab67 88 */
Jonathan Austin 1:8aa5cdb4ab67 89 int read(int address, char *data, int length, bool repeated = false);
Jonathan Austin 1:8aa5cdb4ab67 90
Jonathan Austin 1:8aa5cdb4ab67 91 /**
Jonathan Austin 1:8aa5cdb4ab67 92 * Performs a complete write transaction. The bottom bit of the address is forced to 0 to indicate a write.
Jonathan Austin 1:8aa5cdb4ab67 93 *
Jonathan Austin 1:8aa5cdb4ab67 94 * @param address 8-bit I2C slave address [ addr | 0 ]
Jonathan Austin 1:8aa5cdb4ab67 95 *
Jonathan Austin 1:8aa5cdb4ab67 96 * @param data A pointer to a byte buffer containing the data to write.
Jonathan Austin 1:8aa5cdb4ab67 97 *
Jonathan Austin 1:8aa5cdb4ab67 98 * @param length Number of bytes to write
Jonathan Austin 1:8aa5cdb4ab67 99 *
Jonathan Austin 1:8aa5cdb4ab67 100 * @param repeated if true, stop is not sent at the end. Defaults to false.
Jonathan Austin 1:8aa5cdb4ab67 101 *
Jonathan Austin 1:8aa5cdb4ab67 102 * @return MICROBIT_OK on success, MICROBIT_I2C_ERROR if an unresolved write failure is detected.
Jonathan Austin 1:8aa5cdb4ab67 103 */
Jonathan Austin 1:8aa5cdb4ab67 104 int write(int address, const char *data, int length, bool repeated = false);
Jonathan Austin 1:8aa5cdb4ab67 105 };
Jonathan Austin 1:8aa5cdb4ab67 106
LancasterUniversity 4:9fbeeb89de59 107 #endif