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80 lines
2.0 KiB
80 lines
2.0 KiB
//
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// Created by MightyPork on 2018/02/03.
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//
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#include "platform.h"
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#include "unit_base.h"
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#define DIN_INTERNAL
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#include "_din_internal.h"
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/**
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* Send a trigger event to master (called on the message queue thread).
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*
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* unit - unit
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* timestamp - timestamp
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* data1 - packed, triggering pin
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* data2 - snapshot
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*/
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static void DIn_SendTriggerReportToMaster(Job *job)
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{
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PayloadBuilder pb = pb_start(unit_tmp512, UNIT_TMP_LEN, NULL);
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pb_u16(&pb, (uint16_t) job->data1); // packed, 1 on the triggering pin
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pb_u16(&pb, (uint16_t) job->data2); // packed, snapshot
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assert_param(pb.ok);
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EventReport event = {
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.unit = job->unit,
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.timestamp = job->timestamp,
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.data = pb.start,
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.length = (uint16_t) pb_length(&pb),
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};
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EventReport_Send(&event);
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}
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/**
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* EXTI callback for pin change interrupts
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*
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* @param arg - the unit is passed here
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*/
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void DIn_handleExti(void *arg)
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{
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const uint64_t ts = PTIM_GetMicrotime();
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Unit *unit = arg;
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struct priv *priv = unit->data;
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const uint16_t snapshot = (uint16_t) priv->port->IDR;
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uint16_t trigger_map = 0;
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uint16_t mask = 1;
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const uint16_t armed_pins = priv->arm_single | priv->arm_auto;
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for (int i = 0; i < 16; i++, mask <<= 1) {
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if (!LL_EXTI_ReadFlag_0_31(LL_EXTI_LINES[i])) continue;
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LL_EXTI_ClearFlag_0_31(LL_EXTI_LINES[i]);
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// Armed and ready
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if ((armed_pins & mask) && (priv->holdoff_countdowns[i] == 0)) {
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// Mark as captured
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trigger_map |= (1 << i);
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// Start hold-off (no-op if zero hold-off)
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priv->holdoff_countdowns[i] = priv->trig_holdoff;
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}
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}
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// Disarm all possibly used single triggers
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priv->arm_single &= ~trigger_map;
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if (trigger_map != 0) {
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Job j = {
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.unit = unit,
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.timestamp = ts,
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.data1 = pinmask_pack(trigger_map, priv->pins),
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.data2 = pinmask_pack(snapshot, priv->pins),
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.cb = DIn_SendTriggerReportToMaster
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};
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scheduleJob(&j);
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}
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}
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