Milen Pavlov / XRange_mbed_src

Mbed SDK for XRange SX1272 LoRa module

Dependents:   XRangePingPong XRange-LoRaWAN-lmic-app lora-transceiver

SX1272 LoRa RF module

https://www.netblocks.eu/xrange-sx1272-lora-datasheet/

api/SPISlave.h@339:ac6f3fd999f3, 2016-01-07 (annotated)

Committer:
netblocks
Date:
Thu Jan 07 13:01:25 2016 +0000
Revision:
339:ac6f3fd999f3
Parent:
336:1e18a06a987b 
HSE_VALUE set for XTAL 16Mhz

Who changed what in which revision?

UserRevisionLine numberNew contents of line
dudmuck 336:1e18a06a987b 1 /* mbed Microcontroller Library
dudmuck 336:1e18a06a987b 2 * Copyright (c) 2006-2013 ARM Limited
dudmuck 336:1e18a06a987b 3 *
dudmuck 336:1e18a06a987b 4 * Licensed under the Apache License, Version 2.0 (the "License");
dudmuck 336:1e18a06a987b 5 * you may not use this file except in compliance with the License.
dudmuck 336:1e18a06a987b 6 * You may obtain a copy of the License at
dudmuck 336:1e18a06a987b 7 *
dudmuck 336:1e18a06a987b 8 * http://www.apache.org/licenses/LICENSE-2.0
dudmuck 336:1e18a06a987b 9 *
dudmuck 336:1e18a06a987b 10 * Unless required by applicable law or agreed to in writing, software
dudmuck 336:1e18a06a987b 11 * distributed under the License is distributed on an "AS IS" BASIS,
dudmuck 336:1e18a06a987b 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
dudmuck 336:1e18a06a987b 13 * See the License for the specific language governing permissions and
dudmuck 336:1e18a06a987b 14 * limitations under the License.
dudmuck 336:1e18a06a987b 15 */
dudmuck 336:1e18a06a987b 16 #ifndef MBED_SPISLAVE_H
dudmuck 336:1e18a06a987b 17 #define MBED_SPISLAVE_H
dudmuck 336:1e18a06a987b 18
dudmuck 336:1e18a06a987b 19 #include "platform.h"
dudmuck 336:1e18a06a987b 20
dudmuck 336:1e18a06a987b 21 #if DEVICE_SPISLAVE
dudmuck 336:1e18a06a987b 22
dudmuck 336:1e18a06a987b 23 #include "spi_api.h"
dudmuck 336:1e18a06a987b 24
dudmuck 336:1e18a06a987b 25 namespace mbed {
dudmuck 336:1e18a06a987b 26
dudmuck 336:1e18a06a987b 27 /** A SPI slave, used for communicating with a SPI Master device
dudmuck 336:1e18a06a987b 28 *
dudmuck 336:1e18a06a987b 29 * The default format is set to 8-bits, mode 0, and a clock frequency of 1MHz
dudmuck 336:1e18a06a987b 30 *
dudmuck 336:1e18a06a987b 31 * Example:
dudmuck 336:1e18a06a987b 32 * @code
dudmuck 336:1e18a06a987b 33 * // Reply to a SPI master as slave
dudmuck 336:1e18a06a987b 34 *
dudmuck 336:1e18a06a987b 35 * #include "mbed.h"
dudmuck 336:1e18a06a987b 36 *
dudmuck 336:1e18a06a987b 37 * SPISlave device(p5, p6, p7, p8); // mosi, miso, sclk, ssel
dudmuck 336:1e18a06a987b 38 *
dudmuck 336:1e18a06a987b 39 * int main() {
dudmuck 336:1e18a06a987b 40 * device.reply(0x00); // Prime SPI with first reply
dudmuck 336:1e18a06a987b 41 * while(1) {
dudmuck 336:1e18a06a987b 42 * if(device.receive()) {
dudmuck 336:1e18a06a987b 43 * int v = device.read(); // Read byte from master
dudmuck 336:1e18a06a987b 44 * v = (v + 1) % 0x100; // Add one to it, modulo 256
dudmuck 336:1e18a06a987b 45 * device.reply(v); // Make this the next reply
dudmuck 336:1e18a06a987b 46 * }
dudmuck 336:1e18a06a987b 47 * }
dudmuck 336:1e18a06a987b 48 * }
dudmuck 336:1e18a06a987b 49 * @endcode
dudmuck 336:1e18a06a987b 50 */
dudmuck 336:1e18a06a987b 51 class SPISlave {
dudmuck 336:1e18a06a987b 52
dudmuck 336:1e18a06a987b 53 public:
dudmuck 336:1e18a06a987b 54
dudmuck 336:1e18a06a987b 55 /** Create a SPI slave connected to the specified pins
dudmuck 336:1e18a06a987b 56 *
dudmuck 336:1e18a06a987b 57 * Pin Options:
dudmuck 336:1e18a06a987b 58 * (5, 6, 7i, 8) or (11, 12, 13, 14)
dudmuck 336:1e18a06a987b 59 *
dudmuck 336:1e18a06a987b 60 * mosi or miso can be specfied as NC if not used
dudmuck 336:1e18a06a987b 61 *
dudmuck 336:1e18a06a987b 62 * @param mosi SPI Master Out, Slave In pin
dudmuck 336:1e18a06a987b 63 * @param miso SPI Master In, Slave Out pin
dudmuck 336:1e18a06a987b 64 * @param sclk SPI Clock pin
dudmuck 336:1e18a06a987b 65 * @param ssel SPI chip select pin
dudmuck 336:1e18a06a987b 66 * @param name (optional) A string to identify the object
dudmuck 336:1e18a06a987b 67 */
dudmuck 336:1e18a06a987b 68 SPISlave(PinName mosi, PinName miso, PinName sclk, PinName ssel);
dudmuck 336:1e18a06a987b 69
dudmuck 336:1e18a06a987b 70 /** Configure the data transmission format
dudmuck 336:1e18a06a987b 71 *
dudmuck 336:1e18a06a987b 72 * @param bits Number of bits per SPI frame (4 - 16)
dudmuck 336:1e18a06a987b 73 * @param mode Clock polarity and phase mode (0 - 3)
dudmuck 336:1e18a06a987b 74 *
dudmuck 336:1e18a06a987b 75 * @code
dudmuck 336:1e18a06a987b 76 * mode | POL PHA
dudmuck 336:1e18a06a987b 77 * -----+--------
dudmuck 336:1e18a06a987b 78 * 0 | 0 0
dudmuck 336:1e18a06a987b 79 * 1 | 0 1
dudmuck 336:1e18a06a987b 80 * 2 | 1 0
dudmuck 336:1e18a06a987b 81 * 3 | 1 1
dudmuck 336:1e18a06a987b 82 * @endcode
dudmuck 336:1e18a06a987b 83 */
dudmuck 336:1e18a06a987b 84 void format(int bits, int mode = 0);
dudmuck 336:1e18a06a987b 85
dudmuck 336:1e18a06a987b 86 /** Set the spi bus clock frequency
dudmuck 336:1e18a06a987b 87 *
dudmuck 336:1e18a06a987b 88 * @param hz SCLK frequency in hz (default = 1MHz)
dudmuck 336:1e18a06a987b 89 */
dudmuck 336:1e18a06a987b 90 void frequency(int hz = 1000000);
dudmuck 336:1e18a06a987b 91
dudmuck 336:1e18a06a987b 92 /** Polls the SPI to see if data has been received
dudmuck 336:1e18a06a987b 93 *
dudmuck 336:1e18a06a987b 94 * @returns
dudmuck 336:1e18a06a987b 95 * 0 if no data,
dudmuck 336:1e18a06a987b 96 * 1 otherwise
dudmuck 336:1e18a06a987b 97 */
dudmuck 336:1e18a06a987b 98 int receive(void);
dudmuck 336:1e18a06a987b 99
dudmuck 336:1e18a06a987b 100 /** Retrieve data from receive buffer as slave
dudmuck 336:1e18a06a987b 101 *
dudmuck 336:1e18a06a987b 102 * @returns
dudmuck 336:1e18a06a987b 103 * the data in the receive buffer
dudmuck 336:1e18a06a987b 104 */
dudmuck 336:1e18a06a987b 105 int read(void);
dudmuck 336:1e18a06a987b 106
dudmuck 336:1e18a06a987b 107 /** Fill the transmission buffer with the value to be written out
dudmuck 336:1e18a06a987b 108 * as slave on the next received message from the master.
dudmuck 336:1e18a06a987b 109 *
dudmuck 336:1e18a06a987b 110 * @param value the data to be transmitted next
dudmuck 336:1e18a06a987b 111 */
dudmuck 336:1e18a06a987b 112 void reply(int value);
dudmuck 336:1e18a06a987b 113
dudmuck 336:1e18a06a987b 114 protected:
dudmuck 336:1e18a06a987b 115 spi_t _spi;
dudmuck 336:1e18a06a987b 116
dudmuck 336:1e18a06a987b 117 int _bits;
dudmuck 336:1e18a06a987b 118 int _mode;
dudmuck 336:1e18a06a987b 119 int _hz;
dudmuck 336:1e18a06a987b 120 };
dudmuck 336:1e18a06a987b 121
dudmuck 336:1e18a06a987b 122 } // namespace mbed
dudmuck 336:1e18a06a987b 123
dudmuck 336:1e18a06a987b 124 #endif
dudmuck 336:1e18a06a987b 125
dudmuck 336:1e18a06a987b 126 #endif