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TEAMUSB_SLAVE
Fork of USBHostKeyboard_HelloWorld by
main.cpp@14:c820ae094728, 2015-05-04 (annotated)
- Committer:
- armdran
- Date:
- Mon May 04 15:01:26 2015 +0000
- Revision:
- 14:c820ae094728
- Parent:
- 13:b05908f05e81
- platform & pin switch; - queue size changed; - auto restart on spi failure implemented
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
samux | 0:88d52e197201 | 1 | #include "mbed.h" |
samux | 0:88d52e197201 | 2 | #include "USBHostKeyboard.h" |
armdran | 14:c820ae094728 | 3 | #include "time.h" |
armdran | 14:c820ae094728 | 4 | |
armdran | 14:c820ae094728 | 5 | extern "C" void mbed_reset(); |
armdran | 14:c820ae094728 | 6 | |
armdran | 14:c820ae094728 | 7 | clock_t spi_begin = 0; |
armdran | 14:c820ae094728 | 8 | clock_t spi_end = 0; |
gabriel4211 | 12:d32975c44c98 | 9 | |
gabriel4211 | 12:d32975c44c98 | 10 | typedef struct { |
gabriel4211 | 12:d32975c44c98 | 11 | uint8_t key; |
gabriel4211 | 12:d32975c44c98 | 12 | uint8_t modifier; |
gabriel4211 | 12:d32975c44c98 | 13 | } keyPress_t; |
gabriel4211 | 12:d32975c44c98 | 14 | |
samux | 0:88d52e197201 | 15 | DigitalOut led(LED1); |
armdran | 14:c820ae094728 | 16 | SPISlave device(p5, p6, p7, p8); |
armdran | 14:c820ae094728 | 17 | DigitalOut ir(p21); |
armdran | 14:c820ae094728 | 18 | Queue<keyPress_t, 1024> _keyQueue; |
armdran | 14:c820ae094728 | 19 | MemoryPool<keyPress_t, 1024> mpool; |
gabriel4211 | 13:b05908f05e81 | 20 | |
armdran | 11:e12aae7de530 | 21 | uint8_t spi_reply_blocking(uint8_t reply = 0x00, bool sendIr = 0) { |
armdran | 11:e12aae7de530 | 22 | device.reply(reply); |
gabriel4211 | 12:d32975c44c98 | 23 | if(sendIr == 1) { |
gabriel4211 | 12:d32975c44c98 | 24 | ir = 1; ir = 0; |
gabriel4211 | 12:d32975c44c98 | 25 | } |
gabriel4211 | 13:b05908f05e81 | 26 | while(!device.receive()) { |
gabriel4211 | 13:b05908f05e81 | 27 | // busy |
gabriel4211 | 12:d32975c44c98 | 28 | } |
armdran | 11:e12aae7de530 | 29 | uint8_t instruction = device.read(); |
armdran | 11:e12aae7de530 | 30 | return instruction; |
armdran | 11:e12aae7de530 | 31 | } |
armdran | 11:e12aae7de530 | 32 | |
samux | 0:88d52e197201 | 33 | |
armdran | 8:f8122ca2f58f | 34 | void onKeyMod(uint8_t key, uint8_t modifier) { |
gabriel4211 | 12:d32975c44c98 | 35 | keyPress_t *keypress = mpool.alloc(); |
gabriel4211 | 12:d32975c44c98 | 36 | keypress->key = key; |
armdran | 14:c820ae094728 | 37 | keypress->modifier = modifier; |
gabriel4211 | 12:d32975c44c98 | 38 | _keyQueue.put(keypress); |
armdran | 8:f8122ca2f58f | 39 | } |
armdran | 8:f8122ca2f58f | 40 | |
gabriel4211 | 12:d32975c44c98 | 41 | void spi_task(void const *) { |
armdran | 14:c820ae094728 | 42 | |
gabriel4211 | 12:d32975c44c98 | 43 | while(1){ |
gabriel4211 | 12:d32975c44c98 | 44 | osEvent evt = _keyQueue.get(); |
gabriel4211 | 12:d32975c44c98 | 45 | if (evt.status == osEventMessage) { |
armdran | 14:c820ae094728 | 46 | |
armdran | 14:c820ae094728 | 47 | spi_begin = clock(); |
armdran | 14:c820ae094728 | 48 | |
gabriel4211 | 12:d32975c44c98 | 49 | keyPress_t *keypress = (keyPress_t*)evt.value.p; |
gabriel4211 | 12:d32975c44c98 | 50 | uint8_t key = keypress->key; |
gabriel4211 | 12:d32975c44c98 | 51 | uint8_t modifier = keypress->modifier; |
gabriel4211 | 12:d32975c44c98 | 52 | |
gabriel4211 | 13:b05908f05e81 | 53 | printf(" sending key %x and modifier %x \r\n", key, modifier); |
gabriel4211 | 12:d32975c44c98 | 54 | uint8_t instruction = spi_reply_blocking(key, 1); |
gabriel4211 | 12:d32975c44c98 | 55 | |
gabriel4211 | 12:d32975c44c98 | 56 | while(instruction != 0xFE) { |
gabriel4211 | 12:d32975c44c98 | 57 | printf(" out of sync.\r\n"); |
gabriel4211 | 12:d32975c44c98 | 58 | instruction = spi_reply_blocking(key); |
gabriel4211 | 12:d32975c44c98 | 59 | } |
gabriel4211 | 12:d32975c44c98 | 60 | |
gabriel4211 | 12:d32975c44c98 | 61 | uint8_t ack_key = spi_reply_blocking(modifier); |
gabriel4211 | 12:d32975c44c98 | 62 | |
gabriel4211 | 12:d32975c44c98 | 63 | uint8_t ack_keychar = spi_reply_blocking(); |
gabriel4211 | 12:d32975c44c98 | 64 | |
gabriel4211 | 12:d32975c44c98 | 65 | if(ack_key != key) |
gabriel4211 | 12:d32975c44c98 | 66 | printf(" key ack failed (is %x, should be %x)!!!\r\n", ack_key, key); |
gabriel4211 | 12:d32975c44c98 | 67 | else |
gabriel4211 | 12:d32975c44c98 | 68 | printf(" key ack ok\r\n"); |
gabriel4211 | 13:b05908f05e81 | 69 | |
gabriel4211 | 12:d32975c44c98 | 70 | mpool.free(keypress); |
armdran | 14:c820ae094728 | 71 | |
armdran | 14:c820ae094728 | 72 | spi_end = clock(); |
armdran | 14:c820ae094728 | 73 | |
gabriel4211 | 13:b05908f05e81 | 74 | } |
gabriel4211 | 12:d32975c44c98 | 75 | } |
gabriel4211 | 12:d32975c44c98 | 76 | } |
armdran | 8:f8122ca2f58f | 77 | |
samux | 0:88d52e197201 | 78 | void keyboard_task(void const *) { |
samux | 0:88d52e197201 | 79 | |
samux | 0:88d52e197201 | 80 | USBHostKeyboard keyboard; |
samux | 0:88d52e197201 | 81 | |
samux | 0:88d52e197201 | 82 | while(1) { |
armdran | 8:f8122ca2f58f | 83 | |
armdran | 8:f8122ca2f58f | 84 | printf("trying to connect\r\n"); |
armdran | 8:f8122ca2f58f | 85 | |
samux | 0:88d52e197201 | 86 | // try to connect a USB keyboard |
armdran | 8:f8122ca2f58f | 87 | while(!keyboard.connect()) { |
samux | 0:88d52e197201 | 88 | Thread::wait(500); |
armdran | 8:f8122ca2f58f | 89 | } |
armdran | 8:f8122ca2f58f | 90 | printf("connected\r\n"); |
samux | 0:88d52e197201 | 91 | // when connected, attach handler called on keyboard event |
armdran | 8:f8122ca2f58f | 92 | keyboard.attach(onKeyMod); |
armdran | 8:f8122ca2f58f | 93 | printf("eventhandler attached\r\n"); |
samux | 0:88d52e197201 | 94 | // wait until the keyboard is disconnected |
armdran | 8:f8122ca2f58f | 95 | while(keyboard.connected()) { |
armdran | 14:c820ae094728 | 96 | //USBHost::poll(); |
armdran | 14:c820ae094728 | 97 | Thread::wait(500); |
armdran | 8:f8122ca2f58f | 98 | } |
armdran | 8:f8122ca2f58f | 99 | printf("disconnected\r\n"); |
samux | 0:88d52e197201 | 100 | } |
samux | 0:88d52e197201 | 101 | } |
samux | 0:88d52e197201 | 102 | |
armdran | 14:c820ae094728 | 103 | void alive_task(void const *) { |
armdran | 14:c820ae094728 | 104 | while(1) { |
armdran | 14:c820ae094728 | 105 | if(spi_begin > spi_end) { |
armdran | 14:c820ae094728 | 106 | float diff = ((float)clock() - (float)spi_begin) / CLOCKS_PER_SEC; |
armdran | 14:c820ae094728 | 107 | if(diff > .5) { |
armdran | 14:c820ae094728 | 108 | mbed_reset(); |
armdran | 14:c820ae094728 | 109 | } |
armdran | 14:c820ae094728 | 110 | } |
armdran | 14:c820ae094728 | 111 | Thread::wait(2000); |
armdran | 14:c820ae094728 | 112 | } |
armdran | 14:c820ae094728 | 113 | } |
armdran | 14:c820ae094728 | 114 | |
samux | 0:88d52e197201 | 115 | int main() { |
gabriel4211 | 12:d32975c44c98 | 116 | ir = 0; |
samux | 0:88d52e197201 | 117 | Thread keyboardTask(keyboard_task, NULL, osPriorityNormal, 256 * 4); |
gabriel4211 | 12:d32975c44c98 | 118 | Thread spiTask(spi_task, NULL, osPriorityNormal, 256 * 4); |
armdran | 14:c820ae094728 | 119 | Thread aliveTask(alive_task, NULL, osPriorityNormal, 256 * 4); |
armdran | 9:8bcd70b26084 | 120 | device.frequency(1000000); |
armdran | 11:e12aae7de530 | 121 | device.format(8, 1); |
armdran | 11:e12aae7de530 | 122 | while(1) {} |
armdran | 9:8bcd70b26084 | 123 | |
samux | 0:88d52e197201 | 124 | } |