TEAMUSB / Mbed 2 deprecated TEAMUSB_SLAVE

TEAMUSB_SLAVE

Dependencies:   USBHost mbed

Fork of USBHostKeyboard_HelloWorld by TEAMUSB

main.cpp@13:b05908f05e81, 2015-04-16 (annotated)

Committer:
gabriel4211
Date:
Thu Apr 16 14:43:44 2015 +0000
Revision:
13:b05908f05e81
Parent:
12:d32975c44c98
Child:
14:c820ae094728
tidied up the code

Who changed what in which revision?

UserRevisionLine numberNew contents of line
samux 0:88d52e197201 1 #include "mbed.h"
samux 0:88d52e197201 2 #include "USBHostKeyboard.h"
wlangenkamp 7:be82ac3c4821 3 #include "rtos.h"
gabriel4211 12:d32975c44c98 4 //#include <queue>
gabriel4211 12:d32975c44c98 5
gabriel4211 12:d32975c44c98 6 typedef struct {
gabriel4211 12:d32975c44c98 7 uint8_t key;
gabriel4211 12:d32975c44c98 8 uint8_t modifier;
gabriel4211 12:d32975c44c98 9 } keyPress_t;
gabriel4211 12:d32975c44c98 10
samux 0:88d52e197201 11 DigitalOut led(LED1);
armdran 9:8bcd70b26084 12 SPISlave device(D11, D12, D13, D10);
armdran 11:e12aae7de530 13 DigitalOut ir(D9);
gabriel4211 12:d32975c44c98 14 Queue<keyPress_t, 16> _keyQueue;
gabriel4211 12:d32975c44c98 15 MemoryPool<keyPress_t, 16> mpool;
gabriel4211 13:b05908f05e81 16
armdran 11:e12aae7de530 17 uint8_t spi_reply_blocking(uint8_t reply = 0x00, bool sendIr = 0) {
armdran 11:e12aae7de530 18 device.reply(reply);
gabriel4211 12:d32975c44c98 19 if(sendIr == 1) {
gabriel4211 12:d32975c44c98 20 ir = 1; ir = 0;
gabriel4211 12:d32975c44c98 21 }
gabriel4211 13:b05908f05e81 22 while(!device.receive()) {
gabriel4211 13:b05908f05e81 23 // busy
gabriel4211 12:d32975c44c98 24 }
armdran 11:e12aae7de530 25 uint8_t instruction = device.read();
armdran 11:e12aae7de530 26 return instruction;
armdran 11:e12aae7de530 27 }
armdran 11:e12aae7de530 28
samux 0:88d52e197201 29
armdran 8:f8122ca2f58f 30 void onKeyMod(uint8_t key, uint8_t modifier) {
gabriel4211 12:d32975c44c98 31 keyPress_t *keypress = mpool.alloc();
gabriel4211 12:d32975c44c98 32 keypress->key = key;
gabriel4211 12:d32975c44c98 33 keypress->modifier = modifier;
gabriel4211 12:d32975c44c98 34 _keyQueue.put(keypress);
armdran 8:f8122ca2f58f 35 }
armdran 8:f8122ca2f58f 36
gabriel4211 12:d32975c44c98 37 void spi_task(void const *) {
gabriel4211 12:d32975c44c98 38 while(1){
gabriel4211 12:d32975c44c98 39 osEvent evt = _keyQueue.get();
gabriel4211 12:d32975c44c98 40 if (evt.status == osEventMessage) {
gabriel4211 12:d32975c44c98 41 keyPress_t *keypress = (keyPress_t*)evt.value.p;
gabriel4211 12:d32975c44c98 42 uint8_t key = keypress->key;
gabriel4211 12:d32975c44c98 43 uint8_t modifier = keypress->modifier;
gabriel4211 12:d32975c44c98 44
gabriel4211 13:b05908f05e81 45 printf(" sending key %x and modifier %x \r\n", key, modifier);
gabriel4211 12:d32975c44c98 46 uint8_t instruction = spi_reply_blocking(key, 1);
gabriel4211 12:d32975c44c98 47
gabriel4211 12:d32975c44c98 48 while(instruction != 0xFE) {
gabriel4211 12:d32975c44c98 49 printf(" out of sync.\r\n");
gabriel4211 12:d32975c44c98 50 instruction = spi_reply_blocking(key);
gabriel4211 12:d32975c44c98 51 }
gabriel4211 12:d32975c44c98 52
gabriel4211 12:d32975c44c98 53 uint8_t ack_key = spi_reply_blocking(modifier);
gabriel4211 12:d32975c44c98 54
gabriel4211 12:d32975c44c98 55 uint8_t ack_keychar = spi_reply_blocking();
gabriel4211 12:d32975c44c98 56
gabriel4211 12:d32975c44c98 57 if(ack_key != key)
gabriel4211 12:d32975c44c98 58 printf(" key ack failed (is %x, should be %x)!!!\r\n", ack_key, key);
gabriel4211 12:d32975c44c98 59 else
gabriel4211 12:d32975c44c98 60 printf(" key ack ok\r\n");
gabriel4211 13:b05908f05e81 61
gabriel4211 12:d32975c44c98 62 mpool.free(keypress);
gabriel4211 12:d32975c44c98 63
gabriel4211 13:b05908f05e81 64 }
gabriel4211 12:d32975c44c98 65 }
gabriel4211 12:d32975c44c98 66 }
armdran 8:f8122ca2f58f 67
samux 0:88d52e197201 68 void keyboard_task(void const *) {
samux 0:88d52e197201 69
samux 0:88d52e197201 70 USBHostKeyboard keyboard;
samux 0:88d52e197201 71
samux 0:88d52e197201 72 while(1) {
armdran 8:f8122ca2f58f 73
armdran 8:f8122ca2f58f 74 printf("trying to connect\r\n");
armdran 8:f8122ca2f58f 75
samux 0:88d52e197201 76 // try to connect a USB keyboard
armdran 8:f8122ca2f58f 77 while(!keyboard.connect()) {
samux 0:88d52e197201 78 Thread::wait(500);
armdran 8:f8122ca2f58f 79 }
armdran 8:f8122ca2f58f 80 printf("connected\r\n");
samux 0:88d52e197201 81 // when connected, attach handler called on keyboard event
armdran 8:f8122ca2f58f 82 keyboard.attach(onKeyMod);
armdran 8:f8122ca2f58f 83 printf("eventhandler attached\r\n");
samux 0:88d52e197201 84 // wait until the keyboard is disconnected
armdran 8:f8122ca2f58f 85 while(keyboard.connected()) {
armdran 8:f8122ca2f58f 86 USBHost::poll();
armdran 8:f8122ca2f58f 87 }
armdran 8:f8122ca2f58f 88 printf("disconnected\r\n");
samux 0:88d52e197201 89 }
samux 0:88d52e197201 90 }
samux 0:88d52e197201 91
samux 0:88d52e197201 92 int main() {
gabriel4211 12:d32975c44c98 93 ir = 0;
samux 0:88d52e197201 94 Thread keyboardTask(keyboard_task, NULL, osPriorityNormal, 256 * 4);
gabriel4211 12:d32975c44c98 95 Thread spiTask(spi_task, NULL, osPriorityNormal, 256 * 4);
armdran 9:8bcd70b26084 96 device.frequency(1000000);
armdran 11:e12aae7de530 97 device.format(8, 1);
armdran 11:e12aae7de530 98 while(1) {}
armdran 9:8bcd70b26084 99
samux 0:88d52e197201 100 }