Norimasa Okamoto / Mbed 2 deprecated LPC4088-USBHostMSD_HelloWorld

Simple USBHost MSD(USB flash drive) for EA LPC4088 QSB test program

Dependencies:   LPC4088-USBHost mbed

EA LPC4088をUSBホストにしてUSBフラッシュメモリ(USB flash drive)を読み書きするテストプログラムです。
/media/uploads/va009039/lpc4088-msd-1.jpg
/media/uploads/va009039/lpc4088-msd-2.png

https://bitbucket.org/va009039/lpc4088_usbhost

LPC4088-USBHost/USBHost/BaseUsbHostLib.cpp@0:11152e69fc05, 2014-04-22 (annotated)

Committer:
va009039
Date:
Tue Apr 22 10:54:52 2014 +0000
Revision:
0:11152e69fc05
first commit,sync rev.25.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
va009039 0:11152e69fc05 1 // BaseUsbHostLib.cpp 2014/4/22
va009039 0:11152e69fc05 2 #include "USBHost.h"
va009039 0:11152e69fc05 3 //#define DEBUG
va009039 0:11152e69fc05 4 #include "BaseUsbHostDebug.h"
va009039 0:11152e69fc05 5 #define TEST
va009039 0:11152e69fc05 6 #include "BaseUsbHostTest.h"
va009039 0:11152e69fc05 7
va009039 0:11152e69fc05 8 //#define DBG_USE_POSIX_MEMALIGN
va009039 0:11152e69fc05 9
va009039 0:11152e69fc05 10 #ifdef DBG_USE_POSIX_MEMALIGN
va009039 0:11152e69fc05 11 void* usb_ram_malloc(size_t size, int aligment)
va009039 0:11152e69fc05 12 {
va009039 0:11152e69fc05 13 TEST_ASSERT(aligment >= 4);
va009039 0:11152e69fc05 14 TEST_ASSERT(!(aligment & 3));
va009039 0:11152e69fc05 15 void* p;
va009039 0:11152e69fc05 16 if (posix_memalign(&p, aligment, size) == 0) {
va009039 0:11152e69fc05 17 return p;
va009039 0:11152e69fc05 18 }
va009039 0:11152e69fc05 19 return NULL;
va009039 0:11152e69fc05 20 }
va009039 0:11152e69fc05 21
va009039 0:11152e69fc05 22 void usb_ram_free(void* p)
va009039 0:11152e69fc05 23 {
va009039 0:11152e69fc05 24 free(p);
va009039 0:11152e69fc05 25 }
va009039 0:11152e69fc05 26 #else
va009039 0:11152e69fc05 27
va009039 0:11152e69fc05 28 #define CHUNK_SIZE 64
va009039 0:11152e69fc05 29
va009039 0:11152e69fc05 30 #if defined(TARGET_LPC1768)
va009039 0:11152e69fc05 31 #define USB_RAM_BASE 0x2007C000
va009039 0:11152e69fc05 32 #define USB_RAM_SIZE 0x4000
va009039 0:11152e69fc05 33 #define BLOCK_COUNT (USB_RAM_SIZE/CHUNK_SIZE)
va009039 0:11152e69fc05 34 #elif defined(TARGET_LPC4088)
va009039 0:11152e69fc05 35 #define USB_RAM_BASE 0x20000000
va009039 0:11152e69fc05 36 #define USB_RAM_SIZE 0x4000
va009039 0:11152e69fc05 37 #define BLOCK_COUNT (USB_RAM_SIZE/CHUNK_SIZE)
va009039 0:11152e69fc05 38 #else
va009039 0:11152e69fc05 39 #error "target error"
va009039 0:11152e69fc05 40 #endif
va009039 0:11152e69fc05 41
va009039 0:11152e69fc05 42 static uint8_t* ram = NULL;
va009039 0:11152e69fc05 43 static uint8_t* map;
va009039 0:11152e69fc05 44
va009039 0:11152e69fc05 45 static void usb_ram_init()
va009039 0:11152e69fc05 46 {
va009039 0:11152e69fc05 47 USB_INFO("USB_RAM: 0x%p(%d)", USB_RAM_BASE, USB_RAM_SIZE);
va009039 0:11152e69fc05 48 ram = (uint8_t*)USB_RAM_BASE;
va009039 0:11152e69fc05 49 TEST_ASSERT((int)ram%256 == 0);
va009039 0:11152e69fc05 50 map = (uint8_t*)malloc(BLOCK_COUNT);
va009039 0:11152e69fc05 51 TEST_ASSERT(map);
va009039 0:11152e69fc05 52 memset(map, 0, BLOCK_COUNT);
va009039 0:11152e69fc05 53 }
va009039 0:11152e69fc05 54
va009039 0:11152e69fc05 55 // first fit malloc
va009039 0:11152e69fc05 56 void* usb_ram_malloc(size_t size, int aligment)
va009039 0:11152e69fc05 57 {
va009039 0:11152e69fc05 58 TEST_ASSERT(aligment >= 4);
va009039 0:11152e69fc05 59 TEST_ASSERT(!(aligment & 3));
va009039 0:11152e69fc05 60 if (ram == NULL) {
va009039 0:11152e69fc05 61 usb_ram_init();
va009039 0:11152e69fc05 62 }
va009039 0:11152e69fc05 63 int needs = (size+CHUNK_SIZE-1)/CHUNK_SIZE;
va009039 0:11152e69fc05 64 void* p = NULL;
va009039 0:11152e69fc05 65 for(int idx = 0; idx < BLOCK_COUNT;) {
va009039 0:11152e69fc05 66 bool found = true;
va009039 0:11152e69fc05 67 for(int i = 0; i < needs; i++) {
va009039 0:11152e69fc05 68 int block = map[idx + i];
va009039 0:11152e69fc05 69 if (block != 0) {
va009039 0:11152e69fc05 70 idx += block;
va009039 0:11152e69fc05 71 found = false;
va009039 0:11152e69fc05 72 break;
va009039 0:11152e69fc05 73 }
va009039 0:11152e69fc05 74 }
va009039 0:11152e69fc05 75 if (!found) {
va009039 0:11152e69fc05 76 continue;
va009039 0:11152e69fc05 77 }
va009039 0:11152e69fc05 78 p = ram+idx*CHUNK_SIZE;
va009039 0:11152e69fc05 79 if ((int)p % aligment) {
va009039 0:11152e69fc05 80 idx++;
va009039 0:11152e69fc05 81 continue;
va009039 0:11152e69fc05 82 }
va009039 0:11152e69fc05 83 TEST_ASSERT((idx + needs) <= BLOCK_COUNT);
va009039 0:11152e69fc05 84 for(int i = 0; i < needs; i++) {
va009039 0:11152e69fc05 85 map[idx + i] = needs - i;
va009039 0:11152e69fc05 86 }
va009039 0:11152e69fc05 87 break;
va009039 0:11152e69fc05 88 }
va009039 0:11152e69fc05 89 TEST_ASSERT(p);
va009039 0:11152e69fc05 90 return p;
va009039 0:11152e69fc05 91 }
va009039 0:11152e69fc05 92
va009039 0:11152e69fc05 93 void usb_ram_free(void* p)
va009039 0:11152e69fc05 94 {
va009039 0:11152e69fc05 95 TEST_ASSERT(p >= ram);
va009039 0:11152e69fc05 96 TEST_ASSERT(p < (ram+CHUNK_SIZE*BLOCK_COUNT));
va009039 0:11152e69fc05 97 int idx = ((int)p-(int)ram)/CHUNK_SIZE;
va009039 0:11152e69fc05 98 int block = map[idx];
va009039 0:11152e69fc05 99 TEST_ASSERT(block >= 1);
va009039 0:11152e69fc05 100 for(int i =0; i < block; i++) {
va009039 0:11152e69fc05 101 map[idx + i] = 0;
va009039 0:11152e69fc05 102 }
va009039 0:11152e69fc05 103 }
va009039 0:11152e69fc05 104
va009039 0:11152e69fc05 105 #endif // DBG_USE_POSIX_MEMALIGN
va009039 0:11152e69fc05 106
va009039 0:11152e69fc05 107