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Dependencies:   FatFileSystem TB6612FNG2 mbed

uvc/usb_itd.cpp@0:de03cbbcd0ff, 2015-11-30 (annotated)

Committer:
mbed_Cookbook_SE
Date:
Mon Nov 30 09:32:15 2015 +0000
Revision:
0:de03cbbcd0ff
??

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_Cookbook_SE 0:de03cbbcd0ff 1 #include "mbed.h"
mbed_Cookbook_SE 0:de03cbbcd0ff 2 #include "usb_itd.h"
mbed_Cookbook_SE 0:de03cbbcd0ff 3 #define __DEBUG
mbed_Cookbook_SE 0:de03cbbcd0ff 4 #include "mydbg.h"
mbed_Cookbook_SE 0:de03cbbcd0ff 5
mbed_Cookbook_SE 0:de03cbbcd0ff 6 usb_itd::usb_itd(HCITD* itd)
mbed_Cookbook_SE 0:de03cbbcd0ff 7 {
mbed_Cookbook_SE 0:de03cbbcd0ff 8 DBG_ASSERT(itd);
mbed_Cookbook_SE 0:de03cbbcd0ff 9 m_itd = itd;
mbed_Cookbook_SE 0:de03cbbcd0ff 10 }
mbed_Cookbook_SE 0:de03cbbcd0ff 11
mbed_Cookbook_SE 0:de03cbbcd0ff 12 bool usb_itd::Done()
mbed_Cookbook_SE 0:de03cbbcd0ff 13 {
mbed_Cookbook_SE 0:de03cbbcd0ff 14 int cc = (m_itd->Control >> 28);
mbed_Cookbook_SE 0:de03cbbcd0ff 15 if (cc == 0xe || cc == 0xf) { // not accessed?
mbed_Cookbook_SE 0:de03cbbcd0ff 16 return false;
mbed_Cookbook_SE 0:de03cbbcd0ff 17 }
mbed_Cookbook_SE 0:de03cbbcd0ff 18 if (m_itd->Next) {
mbed_Cookbook_SE 0:de03cbbcd0ff 19 return false;
mbed_Cookbook_SE 0:de03cbbcd0ff 20 }
mbed_Cookbook_SE 0:de03cbbcd0ff 21 return true;
mbed_Cookbook_SE 0:de03cbbcd0ff 22 }
mbed_Cookbook_SE 0:de03cbbcd0ff 23
mbed_Cookbook_SE 0:de03cbbcd0ff 24 int usb_itd::ConditionCode()
mbed_Cookbook_SE 0:de03cbbcd0ff 25 {
mbed_Cookbook_SE 0:de03cbbcd0ff 26 int cc = (m_itd->Control >> 28);
mbed_Cookbook_SE 0:de03cbbcd0ff 27 return cc;
mbed_Cookbook_SE 0:de03cbbcd0ff 28 }
mbed_Cookbook_SE 0:de03cbbcd0ff 29
mbed_Cookbook_SE 0:de03cbbcd0ff 30 uint16_t usb_itd::get_psw(int n)
mbed_Cookbook_SE 0:de03cbbcd0ff 31 {
mbed_Cookbook_SE 0:de03cbbcd0ff 32 DBG_ASSERT(n >= 0 && n <= 7);
mbed_Cookbook_SE 0:de03cbbcd0ff 33 DBG_ASSERT(m_itd);
mbed_Cookbook_SE 0:de03cbbcd0ff 34 uint16_t psw = 0;
mbed_Cookbook_SE 0:de03cbbcd0ff 35 switch(n) {
mbed_Cookbook_SE 0:de03cbbcd0ff 36 case 0: psw = m_itd->OffsetPSW10; break;
mbed_Cookbook_SE 0:de03cbbcd0ff 37 case 1: psw = m_itd->OffsetPSW10 >> 16; break;
mbed_Cookbook_SE 0:de03cbbcd0ff 38 case 2: psw = m_itd->OffsetPSW32; break;
mbed_Cookbook_SE 0:de03cbbcd0ff 39 case 3: psw = m_itd->OffsetPSW32 >> 16; break;
mbed_Cookbook_SE 0:de03cbbcd0ff 40 case 4: psw = m_itd->OffsetPSW54; break;
mbed_Cookbook_SE 0:de03cbbcd0ff 41 case 5: psw = m_itd->OffsetPSW54 >> 16; break;
mbed_Cookbook_SE 0:de03cbbcd0ff 42 case 6: psw = m_itd->OffsetPSW76; break;
mbed_Cookbook_SE 0:de03cbbcd0ff 43 case 7: psw = m_itd->OffsetPSW76 >> 16; break;
mbed_Cookbook_SE 0:de03cbbcd0ff 44 }
mbed_Cookbook_SE 0:de03cbbcd0ff 45 return psw;
mbed_Cookbook_SE 0:de03cbbcd0ff 46 }
mbed_Cookbook_SE 0:de03cbbcd0ff 47
mbed_Cookbook_SE 0:de03cbbcd0ff 48 uint16_t usb_itd::StartingFrame()
mbed_Cookbook_SE 0:de03cbbcd0ff 49 {
mbed_Cookbook_SE 0:de03cbbcd0ff 50 return (m_itd->Control & ITD_SF);
mbed_Cookbook_SE 0:de03cbbcd0ff 51 }
mbed_Cookbook_SE 0:de03cbbcd0ff 52
mbed_Cookbook_SE 0:de03cbbcd0ff 53 int usb_itd::FrameCount()
mbed_Cookbook_SE 0:de03cbbcd0ff 54 {
mbed_Cookbook_SE 0:de03cbbcd0ff 55 DBG_ASSERT(m_itd);
mbed_Cookbook_SE 0:de03cbbcd0ff 56 int fc = ((m_itd->Control & ITD_FC) >> 24) + 1;
mbed_Cookbook_SE 0:de03cbbcd0ff 57 DBG_ASSERT(fc >= 1 && fc <= 8);
mbed_Cookbook_SE 0:de03cbbcd0ff 58 return fc;
mbed_Cookbook_SE 0:de03cbbcd0ff 59 }
mbed_Cookbook_SE 0:de03cbbcd0ff 60
mbed_Cookbook_SE 0:de03cbbcd0ff 61 int usb_itd::PacketStatus(int n)
mbed_Cookbook_SE 0:de03cbbcd0ff 62 {
mbed_Cookbook_SE 0:de03cbbcd0ff 63 DBG_ASSERT(n >=0 && n <= 7);
mbed_Cookbook_SE 0:de03cbbcd0ff 64 uint16_t psw = get_psw(n);
mbed_Cookbook_SE 0:de03cbbcd0ff 65 int cc = (psw >> 12) & 0xf;
mbed_Cookbook_SE 0:de03cbbcd0ff 66 return cc;
mbed_Cookbook_SE 0:de03cbbcd0ff 67 }
mbed_Cookbook_SE 0:de03cbbcd0ff 68
mbed_Cookbook_SE 0:de03cbbcd0ff 69 int usb_itd::Length(int n)
mbed_Cookbook_SE 0:de03cbbcd0ff 70 {
mbed_Cookbook_SE 0:de03cbbcd0ff 71 DBG_ASSERT(n >=0 && n <= 7);
mbed_Cookbook_SE 0:de03cbbcd0ff 72 uint16_t psw = get_psw(n);
mbed_Cookbook_SE 0:de03cbbcd0ff 73 int size = psw & 0x7ff;
mbed_Cookbook_SE 0:de03cbbcd0ff 74 int cc = (psw >> 12) & 0xf;
mbed_Cookbook_SE 0:de03cbbcd0ff 75 if (cc == 0xe || cc == 0xf) {
mbed_Cookbook_SE 0:de03cbbcd0ff 76 return -1;
mbed_Cookbook_SE 0:de03cbbcd0ff 77 }
mbed_Cookbook_SE 0:de03cbbcd0ff 78 if (cc == 0 || cc == 9) {
mbed_Cookbook_SE 0:de03cbbcd0ff 79 return size;
mbed_Cookbook_SE 0:de03cbbcd0ff 80 }
mbed_Cookbook_SE 0:de03cbbcd0ff 81 debug();
mbed_Cookbook_SE 0:de03cbbcd0ff 82 return -1;
mbed_Cookbook_SE 0:de03cbbcd0ff 83 }
mbed_Cookbook_SE 0:de03cbbcd0ff 84
mbed_Cookbook_SE 0:de03cbbcd0ff 85 uint8_t* usb_itd::BufferPage(int n, int size)
mbed_Cookbook_SE 0:de03cbbcd0ff 86 {
mbed_Cookbook_SE 0:de03cbbcd0ff 87 DBG_ASSERT(n >=0 && n <= 7);
mbed_Cookbook_SE 0:de03cbbcd0ff 88 DBG_ASSERT(size >= 128 && size <= 956);
mbed_Cookbook_SE 0:de03cbbcd0ff 89 uint8_t* buf = (uint8_t*)m_itd->BufferPage0 + n * size;
mbed_Cookbook_SE 0:de03cbbcd0ff 90 DBG_ASSERT((uint32_t)(buf+size-1) <= m_itd->BufferEnd);
mbed_Cookbook_SE 0:de03cbbcd0ff 91 return buf;
mbed_Cookbook_SE 0:de03cbbcd0ff 92 }
mbed_Cookbook_SE 0:de03cbbcd0ff 93
mbed_Cookbook_SE 0:de03cbbcd0ff 94 void usb_itd::free()
mbed_Cookbook_SE 0:de03cbbcd0ff 95 {
mbed_Cookbook_SE 0:de03cbbcd0ff 96 DBG_ASSERT(m_itd);
mbed_Cookbook_SE 0:de03cbbcd0ff 97 if (m_itd) {
mbed_Cookbook_SE 0:de03cbbcd0ff 98 uint8_t* buf = (uint8_t*)m_itd->BufferPage0;
mbed_Cookbook_SE 0:de03cbbcd0ff 99 DBG_ASSERT(buf);
mbed_Cookbook_SE 0:de03cbbcd0ff 100 usb_free_bp(buf);
mbed_Cookbook_SE 0:de03cbbcd0ff 101 usb_free_itd((byte*)m_itd);
mbed_Cookbook_SE 0:de03cbbcd0ff 102 m_itd = NULL;
mbed_Cookbook_SE 0:de03cbbcd0ff 103 }
mbed_Cookbook_SE 0:de03cbbcd0ff 104 }
mbed_Cookbook_SE 0:de03cbbcd0ff 105
mbed_Cookbook_SE 0:de03cbbcd0ff 106 void usb_itd::debug()
mbed_Cookbook_SE 0:de03cbbcd0ff 107 {
mbed_Cookbook_SE 0:de03cbbcd0ff 108 DBG("itd =%08X\n", m_itd);
mbed_Cookbook_SE 0:de03cbbcd0ff 109 DBG("itd->Control =%08X\n", m_itd->Control);
mbed_Cookbook_SE 0:de03cbbcd0ff 110 DBG("itd->BufferPage0=%08X\n", m_itd->BufferPage0);
mbed_Cookbook_SE 0:de03cbbcd0ff 111 DBG("itd->Next =%08X\n", m_itd->Next);
mbed_Cookbook_SE 0:de03cbbcd0ff 112 DBG("itd->BufferEnd =%08X\n", m_itd->BufferEnd);
mbed_Cookbook_SE 0:de03cbbcd0ff 113 DBG("itd->OffsetPSW10=%08X\n", m_itd->OffsetPSW10);
mbed_Cookbook_SE 0:de03cbbcd0ff 114 DBG("itd->OffsetPSW32=%08X\n", m_itd->OffsetPSW32);
mbed_Cookbook_SE 0:de03cbbcd0ff 115 DBG("itd->OffsetPSW54=%08X\n", m_itd->OffsetPSW54);
mbed_Cookbook_SE 0:de03cbbcd0ff 116 DBG("itd->OffsetPSW76=%08X\n", m_itd->OffsetPSW76);
mbed_Cookbook_SE 0:de03cbbcd0ff 117 }