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work-in-progress IrDA implementation

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This commit is contained in:
joeycastillo 2024-10-13 19:24:33 -04:00
parent 5fc2406bd6
commit df39195d5b
2 changed files with 25 additions and 24 deletions
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2
gossamer

@ -1 +1 @@
Subproject commit a973180b68869e1c803b27e5b9e136b2cefe582e Subproject commit 8372cef1687bd08af99fe47cc81b5523b7bcb645

47
watch-faces/demo/light_sensor_face.c
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@ -28,6 +28,7 @@
#include "tc.h" #include "tc.h"
#include "eic.h" #include "eic.h"
#include "usb.h" #include "usb.h"
#include "uart.h"
#ifdef HAS_IR_SENSOR #ifdef HAS_IR_SENSOR
@ -46,23 +47,10 @@ void light_sensor_face_activate(void *context) {
HAL_GPIO_IR_ENABLE_out(); HAL_GPIO_IR_ENABLE_out();
HAL_GPIO_IR_ENABLE_clr(); HAL_GPIO_IR_ENABLE_clr();
HAL_GPIO_IRSENSE_in(); HAL_GPIO_IRSENSE_in();
eic_configure_pin(HAL_GPIO_IRSENSE_pin(), INTERRUPT_TRIGGER_FALLING); HAL_GPIO_IRSENSE_pmuxen(HAL_GPIO_PMUX_SERCOM_ALT);
eic_enable_event(HAL_GPIO_IRSENSE_pin()); uart_init_instance(0, UART_TXPO_NONE, UART_RXPO_0, 300);
EVSYS->USER[EVSYS_ID_USER_TC1_EVU].reg = EVSYS_USER_CHANNEL(1 + 1); uart_set_irda_mode_instance(0, true);
// Set up channel 1: uart_enable_instance(0);
EVSYS->CHANNEL[1].reg = EVSYS_CHANNEL_EVGEN(EVSYS_ID_GEN_EIC_EXTINT_4) | // External interrupt 4 generates events on channel 1...
EVSYS_CHANNEL_RUNSTDBY | // even in standby mode...
EVSYS_CHANNEL_PATH_ASYNCHRONOUS; // on the asynchronous path (event drives action directly)
tc_init(1, GENERIC_CLOCK_0, usb_is_enabled() ? TC_PRESCALER_DIV16 : TC_PRESCALER_DIV8);
tc_set_counter_mode(1, TC_COUNTER_MODE_16BIT);
TC1->COUNT16.CTRLA.bit.CAPTEN0 = 1;
TC1->COUNT16.CTRLA.bit.CAPTEN1 = 1;
TC1->COUNT16.EVCTRL.reg = TC_EVCTRL_TCEI | TC_EVCTRL_EVACT_PWP; // Event should capture pulse width and period
tc_set_counter_mode(1, TC_COUNTER_MODE_16BIT);
tc_enable(1);
movement_request_tick_frequency(64);
} }
bool light_sensor_face_loop(movement_event_t event, void *context) { bool light_sensor_face_loop(movement_event_t event, void *context) {
@ -72,16 +60,25 @@ bool light_sensor_face_loop(movement_event_t event, void *context) {
switch (event.event_type) { switch (event.event_type) {
case EVENT_NONE: case EVENT_NONE:
case EVENT_ACTIVATE: case EVENT_ACTIVATE:
watch_display_text_with_fallback(WATCH_POSITION_TOP, "IRPul", "IR"); watch_display_text_with_fallback(WATCH_POSITION_TOP, "IrDA", "IR");
// fall through // fall through
case EVENT_TICK: case EVENT_TICK:
{ {
uint16_t period = TC1->COUNT16.CC[1].reg; uint8_t data[32];
if (period > 10000) { size_t bytes_read = uart_read_instance(0, data, 32);
char buf[11]; if (bytes_read) {
snprintf(buf, 7, "%d", period); char buf[7];
snprintf(buf, 7, "%3db r", bytes_read);
watch_display_text(WATCH_POSITION_BOTTOM, buf); watch_display_text(WATCH_POSITION_BOTTOM, buf);
printf("%s\n", buf); data[31] = 0;
printf("%s: ", buf);
// dump as hex
for(size_t i = 0; i < bytes_read; i++) {
printf("%02X ", data[i]);
}
printf("\n");
} else {
watch_display_text(WATCH_POSITION_BOTTOM, "no dat");
} }
} }
break; break;
@ -122,4 +119,8 @@ void light_sensor_face_resign(void *context) {
// handle any cleanup before your watch face goes off-screen. // handle any cleanup before your watch face goes off-screen.
} }
void irq_handler_sercom0(void);
void irq_handler_sercom0(void) {
uart_irq_handler(0);
}
#endif // HAS_IR_SENSOR #endif // HAS_IR_SENSOR