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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1411 | tk | 1 | // $Id: app.c 2425 2016-11-03 00:44:22Z tk $ |
| 2 | /* |
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| 3 | * SPI J16 Slave Polling |
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| 4 | * |
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| 5 | * ========================================================================== |
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| 6 | * |
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| 7 | * Copyright (C) 2012 Thorsten Klose (tk@midibox.org) |
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| 8 | * Licensed for personal non-commercial use only. |
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| 9 | * All other rights reserved. |
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| 10 | * |
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| 11 | * ========================================================================== |
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| 12 | */ |
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| 13 | |||
| 14 | ///////////////////////////////////////////////////////////////////////////// |
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| 15 | // Include files |
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| 16 | ///////////////////////////////////////////////////////////////////////////// |
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| 17 | |||
| 18 | #include <mios32.h> |
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| 19 | #include "app.h" |
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| 20 | |||
| 21 | #include <FreeRTOS.h> |
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| 22 | #include <portmacro.h> |
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| 23 | #include <task.h> |
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| 24 | #include <queue.h> |
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| 25 | #include <semphr.h> |
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| 26 | |||
| 27 | |||
| 28 | // define priority level for SPI Handler task: |
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| 29 | // use lower priority than MIOS32 specific tasks (3) |
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| 30 | #define PRIORITY_TASK_SPI_HANDLER ( tskIDLE_PRIORITY + 2 ) |
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| 31 | |||
| 32 | // local prototype of the task function |
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| 33 | static void TASK_SPI_Handler(void *pvParameters); |
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| 34 | |||
| 35 | |||
| 36 | ///////////////////////////////////////////////////////////////////////////// |
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| 37 | // Rx/Tx buffer |
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| 38 | ///////////////////////////////////////////////////////////////////////////// |
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| 39 | #define SLAVE_SPI 0 // @J16 |
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| 40 | #define TRANSFER_BUFFER_SIZE 16 |
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| 41 | u8 rx_buffer[TRANSFER_BUFFER_SIZE]; |
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| 42 | u8 tx_buffer[TRANSFER_BUFFER_SIZE]; |
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| 43 | |||
| 44 | |||
| 45 | ///////////////////////////////////////////////////////////////////////////// |
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| 46 | // This hook is called after startup to initialize the application |
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| 47 | ///////////////////////////////////////////////////////////////////////////// |
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| 48 | void APP_Init(void) |
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| 49 | { |
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| 50 | // initialize all LEDs |
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| 51 | MIOS32_BOARD_LED_Init(0xffffffff); |
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| 52 | |||
| 53 | |||
| 54 | // initialize SPI interface |
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| 55 | // ensure that fast pin drivers are activated |
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| 56 | MIOS32_SPI_IO_Init(SLAVE_SPI, MIOS32_SPI_PIN_SLAVE_DRIVER_STRONG); |
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| 57 | |||
| 58 | // init SPI port |
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| 59 | MIOS32_SPI_TransferModeInit(SLAVE_SPI, MIOS32_SPI_MODE_SLAVE_CLK1_PHASE1, MIOS32_SPI_PRESCALER_128); |
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| 60 | |||
| 61 | // start task |
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| 2425 | tk | 62 | xTaskCreate(TASK_SPI_Handler, "SPI_Handler", configMINIMAL_STACK_SIZE, NULL, PRIORITY_TASK_SPI_HANDLER, NULL); |
| 1411 | tk | 63 | } |
| 64 | |||
| 65 | |||
| 66 | ///////////////////////////////////////////////////////////////////////////// |
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| 67 | // This task is running endless in background |
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| 68 | ///////////////////////////////////////////////////////////////////////////// |
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| 69 | void APP_Background(void) |
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| 70 | { |
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| 71 | } |
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| 72 | |||
| 73 | |||
| 74 | ///////////////////////////////////////////////////////////////////////////// |
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| 75 | // This hook is called when a MIDI package has been received |
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| 76 | ///////////////////////////////////////////////////////////////////////////// |
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| 77 | void APP_MIDI_NotifyPackage(mios32_midi_port_t port, mios32_midi_package_t midi_package) |
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| 78 | { |
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| 79 | } |
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| 80 | |||
| 81 | |||
| 82 | ///////////////////////////////////////////////////////////////////////////// |
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| 83 | // This hook is called before the shift register chain is scanned |
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| 84 | ///////////////////////////////////////////////////////////////////////////// |
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| 85 | void APP_SRIO_ServicePrepare(void) |
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| 86 | { |
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| 87 | } |
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| 88 | |||
| 89 | |||
| 90 | ///////////////////////////////////////////////////////////////////////////// |
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| 91 | // This hook is called after the shift register chain has been scanned |
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| 92 | ///////////////////////////////////////////////////////////////////////////// |
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| 93 | void APP_SRIO_ServiceFinish(void) |
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| 94 | { |
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| 95 | } |
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| 96 | |||
| 97 | |||
| 98 | ///////////////////////////////////////////////////////////////////////////// |
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| 99 | // This hook is called when a button has been toggled |
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| 100 | // pin_value is 1 when button released, and 0 when button pressed |
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| 101 | ///////////////////////////////////////////////////////////////////////////// |
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| 102 | void APP_DIN_NotifyToggle(u32 pin, u32 pin_value) |
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| 103 | { |
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| 104 | } |
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| 105 | |||
| 106 | |||
| 107 | ///////////////////////////////////////////////////////////////////////////// |
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| 108 | // This hook is called when an encoder has been moved |
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| 109 | // incrementer is positive when encoder has been turned clockwise, else |
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| 110 | // it is negative |
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| 111 | ///////////////////////////////////////////////////////////////////////////// |
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| 112 | void APP_ENC_NotifyChange(u32 encoder, s32 incrementer) |
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| 113 | { |
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| 114 | } |
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| 115 | |||
| 116 | |||
| 117 | ///////////////////////////////////////////////////////////////////////////// |
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| 118 | // This hook is called when a pot has been moved |
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| 119 | ///////////////////////////////////////////////////////////////////////////// |
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| 120 | void APP_AIN_NotifyChange(u32 pin, u32 pin_value) |
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| 121 | { |
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| 122 | } |
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| 123 | |||
| 124 | |||
| 125 | ///////////////////////////////////////////////////////////////////////////// |
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| 126 | // This task periodically sends a SPI datastream |
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| 127 | ///////////////////////////////////////////////////////////////////////////// |
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| 128 | static void SPI_Callback(void) |
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| 129 | { |
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| 130 | // called after SPI transfer: |
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| 131 | |||
| 132 | // change TX values |
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| 133 | int i; |
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| 134 | for(i=0; i<TRANSFER_BUFFER_SIZE; ++i) |
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| 135 | tx_buffer[i] += 0x10; |
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| 136 | } |
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| 137 | |||
| 138 | static void TASK_SPI_Handler(void *pvParameters) |
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| 139 | { |
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| 140 | // fill Tx Buffer with housenumbers |
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| 141 | { |
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| 142 | int i; |
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| 143 | for(i=0; i<TRANSFER_BUFFER_SIZE; ++i) |
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| 144 | tx_buffer[i] = i; |
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| 145 | } |
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| 146 | |||
| 147 | while( 1 ) { |
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| 148 | int i; |
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| 149 | for(i=0; i<TRANSFER_BUFFER_SIZE; ++i) { |
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| 150 | // toggle Status LED to as a sign of live |
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| 151 | MIOS32_BOARD_LED_Set(1, ~MIOS32_BOARD_LED_Get()); |
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| 152 | |||
| 153 | // receive byte |
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| 154 | rx_buffer[i] = MIOS32_SPI_TransferByte(SLAVE_SPI, tx_buffer[i]); |
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| 155 | } |
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| 156 | |||
| 157 | SPI_Callback(); |
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| 1412 | tk | 158 | |
| 159 | // print received bytes |
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| 160 | MIOS32_MIDI_SendDebugHexDump((u8 *)rx_buffer, TRANSFER_BUFFER_SIZE); |
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| 1411 | tk | 161 | } |
| 162 | } |