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make more clear on the flow proposal.

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Andrew J. Kroll 2013-05-14 16:11:32 -04:00
parent e81faeadd5
commit 387a4ab5f4
1 changed files with 14 additions and 11 deletions
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25
Usb.cpp
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@ -575,19 +575,22 @@ uint8_t USB::DefaultAddressing(uint8_t parent, uint8_t port, bool lowspeed) {
* 5: pUsb->setEpInfoEntry(bAddress, 1, epInfo), exit on fail * 5: pUsb->setEpInfoEntry(bAddress, 1, epInfo), exit on fail
* 6: while (configurations) { * 6: while (configurations) {
* for(each configuration) { * for(each configuration) {
* 6a: Ask device if it likes configuration. Returns 0 on OK. * for (each driver) {
* If successful, the driver configured device. * 6a: Ask device if it likes configuration. Returns 0 on OK.
* The driver now owns the endpoints, and takes over managing them. * If successful, the driver configured device.
* The following will need codes: * The driver now owns the endpoints, and takes over managing them.
* Everything went well, instance consumed, exit with success. * The following will need codes:
* Instance already in use, ignore it, try next driver. * Everything went well, instance consumed, exit with success.
* Not a supported device, ignore it, try next driver. * Instance already in use, ignore it, try next driver.
* Not a supported configuration for this device, ignore it, try next driver. * Not a supported device, ignore it, try next driver.
* Could not configure device, fatal, exit with fail. * Not a supported configuration for this device, ignore it, try next driver.
* * Could not configure device, fatal, exit with fail.
* }
* } * }
* } * }
* 7: if we get here, no driver likes the device, so exit failure. * 7: for(each driver) {
* 7a: Ask device if it knows this VID/PID. Acts exactly like 6a, but using VID/PID
* 8: if we get here, no driver likes the device plugged in, so exit failure.
* *
*/ */
uint8_t USB::Configuring(uint8_t parent, uint8_t port, bool lowspeed) { uint8_t USB::Configuring(uint8_t parent, uint8_t port, bool lowspeed) {