diff options
| -rw-r--r-- | hw/misc/pca9552.c | 15 | ||||
| -rw-r--r-- | hw/misc/trace-events | 1 |
2 files changed, 16 insertions, 0 deletions
diff --git a/hw/misc/pca9552.c b/hw/misc/pca9552.c index 41f8ad2..1c3ad57 100644 --- a/hw/misc/pca9552.c +++ b/hw/misc/pca9552.c @@ -82,6 +82,21 @@ static void pca955x_display_pins_status(PCA955xState *s, buf[i] = '\0'; trace_pca955x_gpio_status(s->description, buf); } + if (trace_event_get_state_backends(TRACE_PCA955X_GPIO_CHANGE)) { + for (i = 0; i < k->pin_count; i++) { + if (extract32(pins_changed, i, 1)) { + unsigned new_state = extract32(pins_status, i, 1); + + /* + * We display the state using the PCA logic ("active-high"). + * This is not the state of the LED, which signal might be + * wired "active-low" on the board. + */ + trace_pca955x_gpio_change(s->description, i, + !new_state, new_state); + } + } + } } static void pca955x_update_pin_input(PCA955xState *s) diff --git a/hw/misc/trace-events b/hw/misc/trace-events index bd7bd37..ebea537 100644 --- a/hw/misc/trace-events +++ b/hw/misc/trace-events @@ -212,3 +212,4 @@ grlib_apb_pnp_read(uint64_t addr, uint32_t value) "APB PnP read addr:0x%03"PRIx6 # pca9552.c pca955x_gpio_status(const char *description, const char *buf) "%s GPIOs 0-15 [%s]" +pca955x_gpio_change(const char *description, unsigned id, unsigned prev_state, unsigned current_state) "%s GPIO id:%u status: %u -> %u" |