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Commit 8952379

facchinm facchinm

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USBMSD: greatly reduce CPU occupation

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2 files changed

+4

-0

lines changed

libraries/USBMSD
- PluggableUSBMSD.h
- USBMSD.cpp

2 files changed

+4

-0

lines changed

`‎libraries/USBMSD/PluggableUSBMSD.h‎`

Lines changed: 1 addition & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -268,6 +268,7 @@ class USBMSD: public internal::PluggableUSBModule {`
`268`	`268`
`269`	`269`	`// Interrupt to thread deferral`
`270`	`270`	`events::PolledQueue _queue;`
	`271`	`+ rtos::EventFlags _data_available;`
`271`	`272`	`events::Task<void()> _in_task;`
`272`	`273`	`events::Task<void()> _out_task;`
`273`	`274`	`mbed::Callback<void()> _reset_task;`

`‎libraries/USBMSD/USBMSD.cpp‎`

Lines changed: 3 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -185,6 +185,7 @@ void USBMSD::process()`
`185`	`185`	`{`
`186`	`186`	`while (1) {`
`187`	`187`	`if (_initialized) {`
	`188`	`+ _data_available.wait_any(0xFF, 10);`
`188`	`189`	`_queue.dispatch();`
`189`	`190`	`//yield();`
`190`	`191`	`}`
`@@ -249,11 +250,13 @@ int USBMSD::disk_status()`
`249`	`250`
`250`	`251`	`void USBMSD::_isr_out()`
`251`	`252`	`{`
	`253`	`+ _data_available.set(1);`
`252`	`254`	`_out_task.call();`
`253`	`255`	`}`
`254`	`256`
`255`	`257`	`void USBMSD::_isr_in()`
`256`	`258`	`{`
	`259`	`+ _data_available.set(1);`
`257`	`260`	`_in_task.call();`
`258`	`261`	`}`
`259`	`262`

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