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[PATCH v3 0/4] hw/misc/pca9552: Trace LED On/Off events
From: |
Philippe Mathieu-Daudé |
Subject: |
[PATCH v3 0/4] hw/misc/pca9552: Trace LED On/Off events |
Date: |
Fri, 19 Jun 2020 16:50:57 +0200 |
This series add trace events to better display LEDs changes.
This helps me to work on a generic LED device, see:
https://www.mail-archive.com/qemu-devel@nongnu.org/msg711917.html
Example when booting an obmc-phosphor-image, we can see the LED #14
(front-power LED) starting to blink.
- ASCII LED bar view:
$ qemu-system-arm -M witherspoon-bmc -trace pca9552_leds_status
19286@1592574170.202791:pca9552_leds_status 0x55dde47807c0 LEDs 0-15
[*...............]
19286@1592574170.203609:pca9552_leds_status 0x55dde47807c0 LEDs 0-15
[**..............]
19286@1592574170.204102:pca9552_leds_status 0x55dde47807c0 LEDs 0-15
[***.............]
19286@1592574170.204415:pca9552_leds_status 0x55dde47807c0 LEDs 0-15
[****............]
19286@1592574170.204758:pca9552_leds_status 0x55dde47807c0 LEDs 0-15
[****.........*..]
19286@1592574170.205070:pca9552_leds_status 0x55dde47807c0 LEDs 0-15
[****.........**.]
19286@1592574170.205380:pca9552_leds_status 0x55dde47807c0 LEDs 0-15
[****.........***]
19286@1592574235.384845:pca9552_leds_status 0x55dde47807c0 LEDs 0-15
[****.........*.*]
19286@1592574235.894049:pca9552_leds_status 0x55dde47807c0 LEDs 0-15
[****.........***]
19286@1592574236.404277:pca9552_leds_status 0x55dde47807c0 LEDs 0-15
[****.........*.*]
19286@1592574236.914644:pca9552_leds_status 0x55dde47807c0 LEDs 0-15
[****.........***]
19286@1592574237.424558:pca9552_leds_status 0x55dde47807c0 LEDs 0-15
[****.........*.*]
19286@1592574237.934580:pca9552_leds_status 0x55dde47807c0 LEDs 0-15
[****.........***]
19286@1592574238.444688:pca9552_leds_status 0x55dde47807c0 LEDs 0-15
[****.........*.*]
- Only display LEDs which status changes:
$ qemu-system-arm -M witherspoon-bmc -trace pca9552_led_change
23367@1592575218.896117:pca9552_led_change 0x557cb6896d80 LED id:0 status: 0
-> 1
23367@1592575218.897072:pca9552_led_change 0x557cb6896d80 LED id:1 status: 0
-> 1
23367@1592575218.897487:pca9552_led_change 0x557cb6896d80 LED id:2 status: 0
-> 1
23367@1592575218.897855:pca9552_led_change 0x557cb6896d80 LED id:3 status: 0
-> 1
23367@1592575218.898256:pca9552_led_change 0x557cb6896d80 LED id:13 status: 0
-> 1
23367@1592575218.898663:pca9552_led_change 0x557cb6896d80 LED id:14 status: 0
-> 1
23367@1592575218.899138:pca9552_led_change 0x557cb6896d80 LED id:15 status: 0
-> 1
23367@1592575281.593379:pca9552_led_change 0x557cb6896d80 LED id:14 status: 1
-> 0
23367@1592575282.102994:pca9552_led_change 0x557cb6896d80 LED id:14 status: 0
-> 1
23367@1592575282.613558:pca9552_led_change 0x557cb6896d80 LED id:14 status: 1
-> 0
23367@1592575283.122774:pca9552_led_change 0x557cb6896d80 LED id:14 status: 0
-> 1
For information about how to test the obmc-phosphor-image, see:
https://www.mail-archive.com/qemu-devel@nongnu.org/msg712911.html
Supersedes: <20200617064734.26956-1-f4bug@amsat.org>
Philippe Mathieu-Daudé (4):
hw/misc/pca9552: Replace magic value by PCA9552_LED_COUNT definition
hw/misc/pca9552: Add a PCA955X_LED_MAX definition
hw/misc/pca9552: Trace LED On/Off events
hw/misc/pca9552: Trace LED change events
include/hw/misc/pca9552.h | 2 ++
hw/misc/pca9552.c | 60 ++++++++++++++++++++++++++++++++++++++-
hw/misc/trace-events | 4 +++
3 files changed, 65 insertions(+), 1 deletion(-)
--
2.21.3
- [PATCH v3 0/4] hw/misc/pca9552: Trace LED On/Off events,
Philippe Mathieu-Daudé <=
- [PATCH v3 1/4] hw/misc/pca9552: Replace magic value by PCA9552_LED_COUNT definition, Philippe Mathieu-Daudé, 2020/06/19
- [PATCH v3 2/4] hw/misc/pca9552: Add a PCA955X_LED_MAX definition, Philippe Mathieu-Daudé, 2020/06/19
- [PATCH v3 4/4] hw/misc/pca9552: Trace LED change events, Philippe Mathieu-Daudé, 2020/06/19
- [PATCH v3 3/4] hw/misc/pca9552: Trace LED On/Off events, Philippe Mathieu-Daudé, 2020/06/19
- Re: [PATCH v3 0/4] hw/misc/pca9552: Trace LED On/Off events, Philippe Mathieu-Daudé, 2020/06/20