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Implement hexagram_cluster_update()

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Implement hexagram_cluster_update() to act as a central point to decode
CAN frames relevant to the gauge cluster
This commit is contained in:
XANTRONIX Development 2019-06-13 16:54:55 -05:00
parent 961af0ce50
commit 0083200cfa
3 changed files with 40 additions and 30 deletions
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30
examples/cluster.c
View file

@ -45,37 +45,9 @@ static void cluster_update(hexagram_cluster *cluster,
struct timeval *last) {
struct timeval now;
switch (frame->can_id) {
case 0x280: {
cluster->state.rpm = 0.25 *
(double)(frame->data[2] | (frame->data[3] << 8));
break;
}
case 0x288: {
cluster->state.temp = (double)(frame->data[1] - 48 * 0.75);
break;
}
case 0x320: {
cluster->state.fuel = (double)(frame->data[2] & 0xf) / 16.0;
break;
}
case 0x5a0: {
cluster->state.rps = 0.001 * (double)(frame->data[1]
| (frame->data[2] << 8));
break;
}
default: {
if (!hexagram_cluster_update(cluster, frame)) {
return;
}
}
gettimeofday(&now, NULL);

5
include/hexagram/cluster.h
View file

@ -1,6 +1,8 @@
#ifndef _HEXAGRAM_CLUSTER_H
#define _HEXAGRAM_CLUSTER_H
#include <linux/can.h>
#include <cairo.h>
#include <hexagram/tacho.h>
@ -35,6 +37,9 @@ void hexagram_cluster_init(hexagram_cluster *cluster,
hexagram_cluster *hexagram_cluster_new(double width,
double height);
int hexagram_cluster_update(hexagram_cluster *cluster,
struct can_frame *frame);
void hexagram_cluster_draw_bg(hexagram_cluster *cluster,
cairo_t *cr);

33
src/cluster.c
View file

@ -71,6 +71,39 @@ error_malloc_cluster:
return NULL;
}
int hexagram_cluster_update(hexagram_cluster *cluster,
struct can_frame *frame) {
switch (frame->can_id) {
case 0x280: {
cluster->state.rpm = 0.25 *
(double)(frame->data[2] | (frame->data[3] << 8));
return 1;
}
case 0x288: {
cluster->state.temp = (double)(frame->data[1] - 48 * 0.75);
return 1;
}
case 0x320: {
cluster->state.fuel = (double)(frame->data[2] & 0xf) / 16.0;
return 1;
}
case 0x5a0: {
cluster->state.rps = 0.001 * (double)(frame->data[1]
| (frame->data[2] << 8));
return 1;
}
}
return 0;
}
void hexagram_cluster_draw_bg(hexagram_cluster *cluster,
cairo_t *cr) {
/*