USB host library, support isochronous,bulk,interrupt and control.
Dependents: BaseUsbHost_example BaseJpegDecode_example SimpleJpegDecode_example
Import programBaseUsbHost_example
BaseUsbHost example program
BaseUsbHostHub.cpp
- Committer:
- va009039
- Date:
- 2012-12-11
- Revision:
- 2:fe1e62051d88
- Parent:
- 0:b7d6879637a8
- Child:
- 3:ae77d63a1eda
File content as of revision 2:fe1e62051d88:
// BaseUsbHostHub.cpp 2012/12/11 #include "mbed.h" #include "rtos.h" #include "BaseUsbHost.h" #define DEBUG #include "BaseUsbHostDebug.h" #define TEST #include "BaseUsbHostTest.h" #define PORT_CONNECTION 0 #define PORT_ENABLE 1 #define PORT_SUSPEND 2 #define PORT_OVER_CURRENT 3 #define PORT_RESET 4 #define PORT_POWER 8 #define PORT_LOW_SPEED 9 #define C_PORT_CONNECTION 16 #define C_PORT_ENABLE 17 #define C_PORT_SUSPEND 18 #define C_PORT_OVER_CURRENT 19 #define C_PORT_RESET 20 UsbHub::UsbHub(ControlEp* ctlEp) { for(int i = 0; i < MAX_HUB_PORT; i++) { PortEp[i] = NULL; } if (ctlEp == NULL) { DBG_OHCI(LPC_USB->HcRhPortStatus1); int lowSpeed = 0; if (LPC_USB->HcRhPortStatus1 & 0x200) { lowSpeed = 1; } m_ctlEp = new ControlEp(lowSpeed); TEST_ASSERT_TRUE(m_ctlEp); } else { m_ctlEp = ctlEp; } uint8_t desc[9]; m_ctlEp->GetDescriptor(1, 0, desc, sizeof(desc)); DBG_HEX(desc, sizeof(desc)); TEST_ASSERT_TRUE(desc[0] == 0x12); TEST_ASSERT_TRUE(desc[1] == 0x01); TEST_ASSERT_TRUE(desc[4] == 0x09); // hub if (desc[4] != 0x09) { // hub ? return; } m_ctlEp->controlReceive(0xa0, 6, 0x29<<8, 0, desc, sizeof(desc)); DBG_HEX(desc, sizeof(desc)); TEST_ASSERT_TRUE(desc[0] == 9); // length TEST_ASSERT_TRUE(desc[1] == 0x29); // hub int bNbrPorts = desc[2]; TEST_ASSERT_TRUE(bNbrPorts <= MAX_HUB_PORT); m_ctlEp->SetConfiguration(1); uint32_t status; m_ctlEp->controlReceive(0xa0, 0, 0, 0, (uint8_t*)&status, 4); DBG("HUB STATUS: %08X\n", status); for(int i = 1; i <= bNbrPorts; i++) { SetPortPower(i); // power on uint32_t status; GetPortStatus(i, &status); DBG("port: %d status: %08X\n", i, status); if (status & 0x010000) { // Connect Status Change, has changed TEST_ASSERT(status & 0x000001); ClearPortFeature(C_PORT_CONNECTION, i); bool low_speed = false; if (status & 0x0200) { low_speed = true; } DeviceConnected(i, low_speed); } else { ClearPortPower(i); // power on } } } ControlEp* UsbHub::GetPortEp(int port) { if (port >= 1 && port <= MAX_HUB_PORT) { return PortEp[port-1]; } return NULL; } int UsbHub::SetPortPower(int port) { return SetPortFeature(PORT_POWER, port); } int UsbHub::ClearPortPower(int port) { return ClearPortFeature(PORT_POWER, port); } int UsbHub::SetPortFeature(int feature, int index) { return m_ctlEp->controlSend(0x23, SET_FEATURE,feature,index,0,0); } int UsbHub::ClearPortFeature(int feature, int index) { return m_ctlEp->controlSend(0x23, CLEAR_FEATURE,feature,index,0,0); } int UsbHub::SetPortReset(int port) { return SetPortFeature(PORT_RESET, port); } int UsbHub::GetPortStatus(int port, uint32_t* status) { return m_ctlEp->controlReceive(0xa3, GET_STATUS, 0, port, (uint8_t*)status, 4); } void UsbHub::DeviceConnected(int port, int low_speed) { DBG("port=%d low_speed=%d\n", port, low_speed); PortReset(port); ControlEp* ctlEp = new ControlEp(low_speed); TEST_ASSERT_TRUE(ctlEp); PortEp[port-1] = ctlEp; DBG("PortEp[%d]: %p\n", port-1, PortEp[port-1]); } int UsbHub::PortReset(int port) { DBG("%p port=%d\n", this, port); TEST_ASSERT(port >= 1); SetPortReset(port); // wait reset for(int i = 0; i < 100; i++) { uint32_t status; GetPortStatus(port, &status); DBG("RESET port: %d status: %08X\n", port, status); if (status & 0x100000) { // Reset change , Reset complete return USB_OK; } wait_ms(5); } return USB_ERROR; }