Dieter Graef / USBHost_DISCO-F746NG

Simple USBHost library for STM32F746NG Discovery board. Only either the Fastspeed or the Highspeed port can be used( not both together)

Dependents:   DISCO-F746NG_USB_Host

Fork of KL46Z-USBHost by Norimasa Okamoto

USBHost/USBHostHub.cpp@8:6463cd1964c0, 2014-01-31 (annotated)

Committer:
va009039
Date:
Fri Jan 31 13:45:07 2014 +0000
Revision:
8:6463cd1964c0
Child:
9:7f9f64cf5ded
USB hub support.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
va009039 8:6463cd1964c0 1 #include "USBHost.h"
va009039 8:6463cd1964c0 2
va009039 8:6463cd1964c0 3 #ifdef _USB_DBG
va009039 8:6463cd1964c0 4 #define USB_DBG(...) do{fprintf(stderr,"[%s@%d] ",__PRETTY_FUNCTION__,__LINE__);fprintf(stderr,__VA_ARGS__);fprintf(stderr,"\n");} while(0);
va009039 8:6463cd1964c0 5 #define USB_DBG_HEX(A,B) debug_hex(A,B)
va009039 8:6463cd1964c0 6 extern void debug_hex(uint8_t* buf, int size);
va009039 8:6463cd1964c0 7 #else
va009039 8:6463cd1964c0 8 #define USB_DBG(...) while(0)
va009039 8:6463cd1964c0 9 #define USB_DBG_HEX(A,B) while(0)
va009039 8:6463cd1964c0 10 #endif
va009039 8:6463cd1964c0 11
va009039 8:6463cd1964c0 12 #ifdef _USB_TEST
va009039 8:6463cd1964c0 13 #define USB_TEST_ASSERT(A) while(!(A)){fprintf(stderr,"\n\n%s@%d %s ASSERT!\n\n",__PRETTY_FUNCTION__,__LINE__,#A);exit(1);};
va009039 8:6463cd1964c0 14 #define USB_TEST_ASSERT_FALSE(A) USB_TEST_ASSERT(!(A))
va009039 8:6463cd1964c0 15 #else
va009039 8:6463cd1964c0 16 #define USB_TEST_ASSERT(A) while(0)
va009039 8:6463cd1964c0 17 #define USB_TEST_ASSERT_FALSE(A) while(0)
va009039 8:6463cd1964c0 18 #endif
va009039 8:6463cd1964c0 19
va009039 8:6463cd1964c0 20 #define PORT_CONNECTION 0
va009039 8:6463cd1964c0 21 #define PORT_ENABLE 1
va009039 8:6463cd1964c0 22 #define PORT_SUSPEND 2
va009039 8:6463cd1964c0 23 #define PORT_OVER_CURRENT 3
va009039 8:6463cd1964c0 24 #define PORT_RESET 4
va009039 8:6463cd1964c0 25 #define PORT_POWER 8
va009039 8:6463cd1964c0 26 #define PORT_LOW_SPEED 9
va009039 8:6463cd1964c0 27
va009039 8:6463cd1964c0 28 #define C_PORT_CONNECTION 16
va009039 8:6463cd1964c0 29 #define C_PORT_ENABLE 17
va009039 8:6463cd1964c0 30 #define C_PORT_SUSPEND 18
va009039 8:6463cd1964c0 31 #define C_PORT_OVER_CURRENT 19
va009039 8:6463cd1964c0 32 #define C_PORT_RESET 20
va009039 8:6463cd1964c0 33
va009039 8:6463cd1964c0 34 bool USBHost::Hub(USBDeviceConnected* dev) {
va009039 8:6463cd1964c0 35 HubDescriptor hubdesc;
va009039 8:6463cd1964c0 36 // get HUB descriptor
va009039 8:6463cd1964c0 37 int rc = controlRead(dev,
va009039 8:6463cd1964c0 38 USB_DEVICE_TO_HOST | USB_REQUEST_TYPE_CLASS,
va009039 8:6463cd1964c0 39 GET_DESCRIPTOR,
va009039 8:6463cd1964c0 40 0x29 << 8, 0, reinterpret_cast<uint8_t*>(&hubdesc),
va009039 8:6463cd1964c0 41 sizeof(HubDescriptor));
va009039 8:6463cd1964c0 42 USB_TEST_ASSERT(rc == USB_TYPE_OK);
va009039 8:6463cd1964c0 43 if (rc != USB_TYPE_OK) {
va009039 8:6463cd1964c0 44 return false;
va009039 8:6463cd1964c0 45 }
va009039 8:6463cd1964c0 46 USB_DBG_HEX((uint8_t*)&hubdesc, sizeof(hubdesc));
va009039 8:6463cd1964c0 47
va009039 8:6463cd1964c0 48 uint32_t status;
va009039 8:6463cd1964c0 49 rc = controlRead( dev,
va009039 8:6463cd1964c0 50 0xa0, 0, 0, 0, reinterpret_cast<uint8_t*>(&status), 4);
va009039 8:6463cd1964c0 51 USB_TEST_ASSERT(rc == USB_TYPE_OK);
va009039 8:6463cd1964c0 52 if (rc != USB_TYPE_OK) {
va009039 8:6463cd1964c0 53 return false;
va009039 8:6463cd1964c0 54 }
va009039 8:6463cd1964c0 55 USB_DBG("HUB STATUS: %08X\n", status);
va009039 8:6463cd1964c0 56
va009039 8:6463cd1964c0 57 for(int i = 1; i <= hubdesc.bNbrPorts; i++) {
va009039 8:6463cd1964c0 58 SetPortPower(dev, i); // power on
va009039 8:6463cd1964c0 59 wait_ms(hubdesc.bPwrOn2PwrGood*2);
va009039 8:6463cd1964c0 60 uint32_t status;
va009039 8:6463cd1964c0 61 GetPortStatus(dev, i, &status);
va009039 8:6463cd1964c0 62 USB_DBG("port: %d status: %08X\n", i, status);
va009039 8:6463cd1964c0 63 if (status & 0x010000) { // Connect Status Change, has changed
va009039 8:6463cd1964c0 64 USB_TEST_ASSERT(status & 0x000001);
va009039 8:6463cd1964c0 65 ClearPortFeature(dev, C_PORT_CONNECTION, i);
va009039 8:6463cd1964c0 66 int lowSpeed = 0;
va009039 8:6463cd1964c0 67 if (status & 0x0200) {
va009039 8:6463cd1964c0 68 lowSpeed = 1;
va009039 8:6463cd1964c0 69 }
va009039 8:6463cd1964c0 70 PortReset(dev, i);
va009039 8:6463cd1964c0 71 if (!addDevice(1, i, lowSpeed)) {
va009039 8:6463cd1964c0 72 ClearPortPower(dev, i); // power off
va009039 8:6463cd1964c0 73 }
va009039 8:6463cd1964c0 74 } else {
va009039 8:6463cd1964c0 75 ClearPortPower(dev, i); // power off
va009039 8:6463cd1964c0 76 }
va009039 8:6463cd1964c0 77 }
va009039 8:6463cd1964c0 78 return false;
va009039 8:6463cd1964c0 79 }
va009039 8:6463cd1964c0 80
va009039 8:6463cd1964c0 81
va009039 8:6463cd1964c0 82 int USBHost::SetPortPower(USBDeviceConnected* dev, int port)
va009039 8:6463cd1964c0 83 {
va009039 8:6463cd1964c0 84 return SetPortFeature(dev, PORT_POWER, port);
va009039 8:6463cd1964c0 85 }
va009039 8:6463cd1964c0 86
va009039 8:6463cd1964c0 87 int USBHost::ClearPortPower(USBDeviceConnected* dev, int port)
va009039 8:6463cd1964c0 88 {
va009039 8:6463cd1964c0 89 return ClearPortFeature(dev, PORT_POWER, port);
va009039 8:6463cd1964c0 90 }
va009039 8:6463cd1964c0 91
va009039 8:6463cd1964c0 92 int USBHost::SetPortFeature(USBDeviceConnected* dev, int feature, int index)
va009039 8:6463cd1964c0 93 {
va009039 8:6463cd1964c0 94 return controlWrite(dev, 0x23, SET_FEATURE,feature,index,0,0);
va009039 8:6463cd1964c0 95 }
va009039 8:6463cd1964c0 96
va009039 8:6463cd1964c0 97 int USBHost::ClearPortFeature(USBDeviceConnected* dev, int feature, int index)
va009039 8:6463cd1964c0 98 {
va009039 8:6463cd1964c0 99 return controlWrite(dev, 0x23, CLEAR_FEATURE,feature,index,0,0);
va009039 8:6463cd1964c0 100 }
va009039 8:6463cd1964c0 101
va009039 8:6463cd1964c0 102 int USBHost::SetPortReset(USBDeviceConnected* dev, int port)
va009039 8:6463cd1964c0 103 {
va009039 8:6463cd1964c0 104 return SetPortFeature(dev, PORT_RESET, port);
va009039 8:6463cd1964c0 105 }
va009039 8:6463cd1964c0 106
va009039 8:6463cd1964c0 107 int USBHost::GetPortStatus(USBDeviceConnected* dev, int port, uint32_t* status)
va009039 8:6463cd1964c0 108 {
va009039 8:6463cd1964c0 109 return controlRead(dev, 0xa3, GET_STATUS, 0, port, (uint8_t*)status, 4);
va009039 8:6463cd1964c0 110 }
va009039 8:6463cd1964c0 111
va009039 8:6463cd1964c0 112 int USBHost::PortReset(USBDeviceConnected* dev, int port)
va009039 8:6463cd1964c0 113 {
va009039 8:6463cd1964c0 114 USB_DBG("%p port=%d\n", this, port);
va009039 8:6463cd1964c0 115 USB_TEST_ASSERT(port >= 1);
va009039 8:6463cd1964c0 116 SetPortReset(dev, port);
va009039 8:6463cd1964c0 117 // wait reset
va009039 8:6463cd1964c0 118 for(int i = 0; i < 100; i++) {
va009039 8:6463cd1964c0 119 uint32_t status;
va009039 8:6463cd1964c0 120 GetPortStatus(dev, port, &status);
va009039 8:6463cd1964c0 121 USB_DBG("RESET port: %d status: %08X\n", port, status);
va009039 8:6463cd1964c0 122 if (status & 0x100000) { // Reset change , Reset complete
va009039 8:6463cd1964c0 123 return USB_TYPE_OK;
va009039 8:6463cd1964c0 124 }
va009039 8:6463cd1964c0 125 wait_ms(5);
va009039 8:6463cd1964c0 126 }
va009039 8:6463cd1964c0 127 return USB_TYPE_ERROR;
va009039 8:6463cd1964c0 128 }