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comparison Scan/ISSILed/led_scan.c @ 422:cbcdb7a16b7c

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Fixing potential WF LED issue - Added fix for USB Current Change * If called during interrupt, could hang the I2C bus * Delaying I2C writes till scan loop
author Jacob Alexander <haata@kiibohd.com>
date Tue, 01 Mar 2016 19:35:21 -0800
parents 23a1868b4ac2
children
comparison
equal deleted inserted replaced
421:ad693d70c292 422:cbcdb7a16b7c
637 } 637 }
638 638
639 639
640 640
641 // LED State processing loop 641 // LED State processing loop
642 unsigned int LED_currentEvent = 0;
642 inline uint8_t LED_scan() 643 inline uint8_t LED_scan()
643 { 644 {
644 645 // Check for current change event
645 // I2C Busy 646 if ( LED_currentEvent )
646 // S & I2C_S_BUSY 647 {
647 //I2C_S_BUSY 648 // TODO dim LEDs in low power mode instead of shutting off
649 if ( LED_currentEvent < 150 )
650 {
651 // Enable Software shutdown of ISSI chip
652 LED_writeReg( 0x0A, 0x00, 0x0B );
653 }
654 else
655 {
656 // Disable Software shutdown of ISSI chip
657 LED_writeReg( 0x0A, 0x01, 0x0B );
658 }
659
660 LED_currentEvent = 0;
661 }
648 662
649 return 0; 663 return 0;
650 } 664 }
651 665
652 666
653 // Called by parent Scan Module whenver the available current has changed 667 // Called by parent Scan Module whenver the available current has changed
654 // current - mA 668 // current - mA
655 void LED_currentChange( unsigned int current ) 669 void LED_currentChange( unsigned int current )
656 { 670 {
657 // TODO dim LEDs in low power mode instead of shutting off 671 // Delay action till next LED scan loop (as this callback sometimes occurs during interrupt requests)
658 if ( current < 150 ) 672 LED_currentEvent = current;
659 {
660 // Enabled Software shutdown of ISSI chip
661 LED_writeReg( 0x0A, 0x00, 0x0B );
662 }
663 else
664 {
665 // Disable Software shutdown of ISSI chip
666 LED_writeReg( 0x0A, 0x01, 0x0B );
667 }
668 } 673 }
669 674
670 675
671 676
672 // ----- Capabilities ----- 677 // ----- Capabilities -----