Norimasa Okamoto / Mbed 2 deprecated USBHostC270_example

LogitechC270 webcam class driver alpha version

Dependencies:   USBHost mbed

Fork of USBHostMSD_HelloWorld by Samuel Mokrani

MyThread/MyThread.h@9:fecabade834a, 2013-03-16 (annotated)

Committer:
va009039
Date:
Sat Mar 16 13:07:55 2013 +0000
Revision:
9:fecabade834a
LogitechC270 class driver alpha version

Who changed what in which revision?

UserRevisionLine numberNew contents of line
va009039 9:fecabade834a 1 // MyThread.h 2012/12/9
va009039 9:fecabade834a 2 #ifndef MY_THREAD_H
va009039 9:fecabade834a 3 #define MY_THREAD_H
va009039 9:fecabade834a 4
va009039 9:fecabade834a 5 #define MAGIC_WORD 0xE25A2EA5
va009039 9:fecabade834a 6 static void thread_handler(void const *argument);
va009039 9:fecabade834a 7
va009039 9:fecabade834a 8 class MyThread {
va009039 9:fecabade834a 9 public:
va009039 9:fecabade834a 10 MyThread() {
va009039 9:fecabade834a 11 m_stack_size = DEFAULT_STACK_SIZE;
va009039 9:fecabade834a 12 m_stack_pointer = NULL;
va009039 9:fecabade834a 13 }
va009039 9:fecabade834a 14 void set_stack(uint32_t stack_size=DEFAULT_STACK_SIZE, uint8_t* stack_pointer = NULL) {
va009039 9:fecabade834a 15 m_stack_size = stack_size;
va009039 9:fecabade834a 16 m_stack_pointer = stack_pointer;
va009039 9:fecabade834a 17 }
va009039 9:fecabade834a 18 virtual void run() = 0;
va009039 9:fecabade834a 19 Thread* start(osPriority priority=osPriorityNormal) {
va009039 9:fecabade834a 20 if (m_stack_pointer == NULL) {
va009039 9:fecabade834a 21 m_stack_pointer = reinterpret_cast<uint8_t*>(malloc(m_stack_size));
va009039 9:fecabade834a 22 }
va009039 9:fecabade834a 23 for(int i = 0; i < m_stack_size-64; i += 4) {
va009039 9:fecabade834a 24 *reinterpret_cast<uint32_t*>(m_stack_pointer+i) = MAGIC_WORD;
va009039 9:fecabade834a 25 }
va009039 9:fecabade834a 26 return th = new Thread(thread_handler, this, priority, m_stack_size, m_stack_pointer);
va009039 9:fecabade834a 27 }
va009039 9:fecabade834a 28
va009039 9:fecabade834a 29 int stack_used() {
va009039 9:fecabade834a 30 int i;
va009039 9:fecabade834a 31 for(i = 0; i < m_stack_size; i += 4) {
va009039 9:fecabade834a 32 if(*reinterpret_cast<uint32_t*>(m_stack_pointer+i) != MAGIC_WORD) {
va009039 9:fecabade834a 33 break;
va009039 9:fecabade834a 34 }
va009039 9:fecabade834a 35 }
va009039 9:fecabade834a 36 return m_stack_size - i;
va009039 9:fecabade834a 37 }
va009039 9:fecabade834a 38
va009039 9:fecabade834a 39 int stack_size() { return m_stack_size; }
va009039 9:fecabade834a 40 protected:
va009039 9:fecabade834a 41 Thread* th;
va009039 9:fecabade834a 42 uint32_t m_stack_size;
va009039 9:fecabade834a 43 uint8_t* m_stack_pointer;
va009039 9:fecabade834a 44 };
va009039 9:fecabade834a 45 static void thread_handler(void const *argument) {
va009039 9:fecabade834a 46 MyThread* th = (MyThread*)argument;
va009039 9:fecabade834a 47 if (th) {
va009039 9:fecabade834a 48 th->run();
va009039 9:fecabade834a 49 }
va009039 9:fecabade834a 50 }
va009039 9:fecabade834a 51
va009039 9:fecabade834a 52 #endif //MY_THREAD_H