specchioriflesso/USB_Host_Shield_2.0
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Make ADK work as per USB spec.

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This commit is contained in:
Andrew J. Kroll 2013-07-15 07:47:20 -04:00
parent 416ca04fee
commit 47b9b257d6
2 changed files with 11 additions and 4 deletions
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12
adk.cpp
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@ -58,14 +58,18 @@ ready(false) {
} }
} }
uint8_t ADK::ConfigureDevice(uint8_t parent, uint8_t port, bool lowspeed) {
return Init(parent, port, lowspeed); // Just call Init. Yes, really!
}
/* Connection initialization of an Android phone */ /* Connection initialization of an Android phone */
uint8_t ADK::Init(uint8_t parent, uint8_t port, bool lowspeed) { uint8_t ADK::Init(uint8_t parent, uint8_t port, bool lowspeed) {
uint8_t buf[sizeof (USB_DEVICE_DESCRIPTOR)]; uint8_t buf[sizeof (USB_DEVICE_DESCRIPTOR)];
uint8_t rcode; uint8_t rcode;
uint8_t num_of_conf; // number of configurations
UsbDevice *p = NULL; UsbDevice *p = NULL;
EpInfo *oldep_ptr = NULL; EpInfo *oldep_ptr = NULL;
uint8_t num_of_conf; // number of configurations
// get memory address of USB device address pool // get memory address of USB device address pool
AddressPool &addrPool = pUsb->GetAddressPool(); AddressPool &addrPool = pUsb->GetAddressPool();
@ -114,7 +118,6 @@ uint8_t ADK::Init(uint8_t parent, uint8_t port, bool lowspeed) {
// Extract Max Packet Size from device descriptor // Extract Max Packet Size from device descriptor
epInfo[0].maxPktSize = (uint8_t)((USB_DEVICE_DESCRIPTOR*)buf)->bMaxPacketSize0; epInfo[0].maxPktSize = (uint8_t)((USB_DEVICE_DESCRIPTOR*)buf)->bMaxPacketSize0;
// Assign new address to the device // Assign new address to the device
rcode = pUsb->setAddr(0, 0, bAddress); rcode = pUsb->setAddr(0, 0, bAddress);
if (rcode) { if (rcode) {
@ -126,6 +129,8 @@ uint8_t ADK::Init(uint8_t parent, uint8_t port, bool lowspeed) {
}//if (rcode... }//if (rcode...
//USBTRACE2("\r\nAddr:", bAddress); //USBTRACE2("\r\nAddr:", bAddress);
// Spec says you should wait at least 200ms.
delay(300);
p->lowspeed = false; p->lowspeed = false;
@ -222,7 +227,8 @@ uint8_t ADK::Init(uint8_t parent, uint8_t port, bool lowspeed) {
if (rcode) { if (rcode) {
goto FailSwAcc; //init fails goto FailSwAcc; //init fails
} }
rcode = -1; rcode = USB_ERROR_CONFIG_REQUIRES_ADDITIONAL_RESET;
delay(1000); // Give Android a chance to do its reset. This is a guess, and possibly could be lower.
goto SwAttempt; //switch to accessory mode attempted goto SwAttempt; //switch to accessory mode attempted
/* diagnostic messages */ /* diagnostic messages */

1
adk.h
View file

@ -110,6 +110,7 @@ public:
// USBDeviceConfig implementation // USBDeviceConfig implementation
virtual uint8_t ConfigureDevice(uint8_t parent, uint8_t port, bool lowspeed);
virtual uint8_t Init(uint8_t parent, uint8_t port, bool lowspeed); virtual uint8_t Init(uint8_t parent, uint8_t port, bool lowspeed);
virtual uint8_t Release(); virtual uint8_t Release();