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Adding dynamic USB power support

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- Each scan module now has a current change callback which passes the available current as a parameter
- No longer attempts to use the max 500 mA immediately, starts with 100 mA then goes to 500 mA after enumeration
- If enumeration fails due to bMaxPower of 500 mA, then attempt again at 100 mA (might also be possible to go even lower to 20 mA in certain cases)
- Now working with the Apple Ipad (no over-power messages)
- Fixed Wake-up behaviour on Apple Ipad (and likely other iOS devices)
- More effecient set_feature/clear_feature handling (device handler)
- Initial power handling via Interconnect (still needs work to get it more dynamic)
This commit is contained in:
Jacob Alexander 2016-02-21 19:56:52 -08:00
parent 62ba0c558b
commit aaae9bc0f2
29 changed files with 503 additions and 48 deletions
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50
Scan/ISSILed/led_scan.c
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@ -383,11 +383,17 @@ void LED_reset()
LED_writeReg( addr, 0x00, 0x08, 0x0B );
}
// Disable Software shutdown of ISSI chip
for ( uint8_t ch = 0; ch < ISSI_Chips_define; ch++ )
// Do not disable software shutdown of ISSI chip unless current is high enough
// Require at least 150 mA
// May be enabled/disabled at a later time
if ( Output_current_available() >= 150 )
{
uint8_t addr = LED_pageBuffer[ ch ].i2c_addr;
LED_writeReg( addr, 0x0A, 0x01, 0x0B );
// Disable Software shutdown of ISSI chip
for ( uint8_t ch = 0; ch < ISSI_Chips_define; ch++ )
{
uint8_t addr = LED_pageBuffer[ ch ].i2c_addr;
LED_writeReg( addr, 0x0A, 0x01, 0x0B );
}
}
}
@ -509,8 +515,35 @@ void LED_linkedSend()
// LED State processing loop
uint32_t LED_timePrev = 0;
unsigned int LED_currentEvent = 0;
inline void LED_scan()
{
// Check for current change event
if ( LED_currentEvent )
{
// TODO dim LEDs in low power mode instead of shutting off
if ( LED_currentEvent < 150 )
{
// Enable Software shutdown of ISSI chip
for ( uint8_t ch = 0; ch < ISSI_Chips_define; ch++ )
{
uint8_t addr = LED_pageBuffer[ ch ].i2c_addr;
LED_writeReg( addr, 0x0A, 0x00, 0x0B );
}
}
else
{
// Disable Software shutdown of ISSI chip
for ( uint8_t ch = 0; ch < ISSI_Chips_define; ch++ )
{
uint8_t addr = LED_pageBuffer[ ch ].i2c_addr;
LED_writeReg( addr, 0x0A, 0x01, 0x0B );
}
}
LED_currentEvent = 0;
}
// Check to see if frame buffers are ready to replenish
if ( LED_FrameBufferReset )
{
@ -585,6 +618,15 @@ inline void LED_scan()
}
// Called by parent Scan Module whenver the available current has changed
// current - mA
void LED_currentChange( unsigned int current )
{
// Delay action till next LED scan loop (as this callback sometimes occurs during interrupt requests)
LED_currentEvent = current;
}
// ----- Capabilities -----