implemented gpu, rest of the shit, mostly works except for hass

src/main.c

@@ -4,9 +4,11 @@
 #include "log.h"
 #include <unistd.h>
 #include <stdatomic.h>
+#include <stdio.h>
 #include <sys/signalfd.h>
 #include "lcd.h"
 #include "cpu.h"
+#include "gpu.h"
 #include "sys.h"
 #include "utils.h"
 
@@ -24,13 +26,13 @@ struct control_t {
 
 struct sensors_t {
 	struct time_date_t td;
-	double loadavg[3];
 	struct memory_t ram;
 	struct disk_t home;
 	struct network_t net;
 	struct syssensors_t sys;
 	struct cpu_sensors_t cpu;
-	// gpu::gpuSensors gpu;
+	struct gpu_sensors_t gpu;
+	double loadavg[3];
 	double hass_state;
 };
 
@@ -45,6 +47,7 @@ static void *sensors_thread(void *arg) {
 	strcpy(sensors->home.mountpoint, "/home/drath");
 	strcpy(sensors->net.device, "enp7s0");
 	cpu_detect(&sensors->cpu, "0000:00:18.3");
+	gpu_detect(&sensors->gpu, "0000:0a:00.0");
 	sys_detect(&sensors->sys, "nct6775.656");
 
 	while (control.g_running) { // NOLINT
@@ -58,6 +61,7 @@ static void *sensors_thread(void *arg) {
 		sys_update_sensors(&sensors->sys);
 
 		cpu_update(&sensors->cpu);
+		gpu_update(&sensors->gpu);
 
 		pthread_mutex_unlock(&control.sensors_mtx);
 		pthread_cond_signal(&control.sensors_ready);
@@ -73,7 +77,6 @@ static void *sensors_thread(void *arg) {
 static void *display_thread(void *arg) {
 	applog(LOG_START, "display thread started");
 	struct sensors_t* sensors = arg;
-	sensors->hass_state = 1;
 
 	struct lcd_t lcd = {
 		.port = "/dev/serial/by-id/usb-Raspberry_Pi_Pico_E6616407E37AA12F-if00",
@@ -103,21 +106,39 @@ static void *display_thread(void *arg) {
 		pthread_mutex_lock(&control.sensors_mtx); // lock sensor struct
 		pthread_cond_timedwait(&control.sensors_ready, &control.sensors_mtx, &ts); // wait until data ready
 
+		// prepare some tricky sensors
 		const uint16_t avg_fan_speed = (sensors->sys.fan_speed[0] + sensors->sys.fan_speed[1]) / 2;
 
-		lcd_writef(&lcd, 0, 0, "%s   %s", sensors->td.date, sensors->td.time);
-		lcd_writef(&lcd, 26, 0, "%.2f %.2f %.2f", sensors->loadavg[0], sensors->loadavg[1], sensors->loadavg[2]);
+		char gpudelta[5];
+		const uint8_t delta = sensors->gpu.temp_hotspot - sensors->gpu.temp_edge;
+		snprintf(gpudelta, sizeof(gpudelta), "%c%d", 1, delta);
+		const uint8_t gpu_pos = delta > 10 ? 3 : 2;
+
+		char gpuclock[16];
+		snprintf(gpuclock, sizeof(gpuclock), "%d/%dMHz", sensors->gpu.clock_core, sensors->gpu.clock_mem);
+
+		lcd_writef(&lcd, 0, 0, "%s   %s%c", sensors->td.date, sensors->td.time, lcd_bar(&lcd, 5, sensors->gpu.usage_core / 100.0));
+		lcd_writef(&lcd, 26, 0, "%.2f %.2f %.2f", sensors->loadavg[0], sensors->loadavg[1], sensors->loadavg[2]); // will fuck up
 
 		lcd_writef(&lcd, 0, 1, "%d/%d%c", sensors->cpu.tctl, sensors->cpu.tccd1, 0);
 		lcd_writef(&lcd, 7, 1, "%s", P_BYTES(sensors->ram.used, 0));
-		lcd_writef(&lcd, 20, 1, "%d%c", sensors->sys.t_sensor, 0);
+		if (sensors->hass_state)
+			lcd_writef(&lcd, 13, 1, "%3.0fW", sensors->hass_state);
+		lcd_writef(&lcd, 18, 1, "%3d%c", sensors->sys.t_sensor, 0);
+		lcd_writef(&lcd, 28, 1, "%4s%c", gpudelta, 0);
+		lcd_writef(&lcd, 25 - gpu_pos, 1, "%6s", P_BYTES(sensors->gpu.vram_used, 1));
+		lcd_writef(&lcd, 34, 1, "%d/%d%c", sensors->gpu.temp_edge, sensors->gpu.temp_hotspot, 0);
 
 		lcd_writef(&lcd, 0, 2, "%.0fW", sensors->cpu.ptotal);
 		lcd_writef(&lcd, 5, 2, "%dR", avg_fan_speed);
 		lcd_writef(&lcd, 12, 2, "%c%s %c%s", 3, P_BYTES(sensors->net.upload, 1), 4, P_BYTES(sensors->net.download, 1));
+		lcd_writef(&lcd, 26, 2, "%4dR", sensors->gpu.fan_speed);
+		lcd_writef(&lcd, 32, 2, "%3d/%3dW", sensors->gpu.power_avg, sensors->gpu.power_cap);
 
 		lcd_writef(&lcd, 0, 3, "%dMHz", sensors->cpu.avg_freq);
 		lcd_writef(&lcd, 14, 3, "%c%s", 2, P_BYTES(sensors->home.usage.free, 1));
+		lcd_writef(&lcd, 21, 3, "%12s", gpuclock);
+		lcd_writef(&lcd, 34, 3, "%.3fV", sensors->gpu.vcore);
 
 		pthread_mutex_unlock(&control.sensors_mtx); // unlock sensor struct
 

src/utils.c

@@ -58,7 +58,7 @@ int get_hwmon_dir(char* path) {
 }
 
 /* read n bytes from path into buffer */
-inline ssize_t read_file(const char* path, char* buffer, const ssize_t n) {
+inline size_t read_file(const char* path, char* buffer, const size_t n) {
 	const int fd = open(path, O_RDONLY | O_CLOEXEC);
 	if (fd < 0) {
 		applog(LOG_ERR, "Error reading %s", path);
@@ -70,23 +70,37 @@ inline ssize_t read_file(const char* path, char* buffer, const ssize_t n) {
 	return len;
 }
 
-inline void fast_read_num_u64(const char* dir, const char* file, char* buf, uint64_t* result, const uint16_t divider) {
+inline void fast_read_num_u64(const char* dir, const char* file, char* buf, uint64_t* result, const uint32_t divider) {
 	char path[256];
 	MKPATH(path, dir, file);
 	read_file(path, buf, 32);
 	*result = strtoull(buf, nullptr, 10) / divider;
 }
 
-inline void fast_read_num_u16(const char* dir, const char* file, char* buf, uint16_t* result, const uint16_t divider) {
+inline void fast_read_num_u16(const char* dir, const char* file, char* buf, uint16_t* result, const uint32_t divider) {
 	char path[256];
 	MKPATH(path, dir, file);
 	read_file(path, buf, 32);
 	*result = strtol(buf, nullptr, 10) / divider;
 }
 
-inline void fast_read_num_i16(const char* dir, const char* file, char* buf, int16_t* result, const uint16_t divider) {
+inline void fast_read_num_u8(const char* dir, const char* file, char* buf, uint8_t* result, const uint32_t divider) {
 	char path[256];
 	MKPATH(path, dir, file);
 	read_file(path, buf, 32);
 	*result = strtol(buf, nullptr, 10) / divider;
+}
+
+inline void fast_read_num_i16(const char* dir, const char* file, char* buf, int16_t* result, const uint32_t divider) {
+	char path[256];
+	MKPATH(path, dir, file);
+	read_file(path, buf, 32);
+	*result = strtol(buf, nullptr, 10) / divider;
+}
+
+inline void fast_read_num_f(const char* dir, const char* file, char* buf, float* result, const uint32_t divider) {
+	char path[256];
+	MKPATH(path, dir, file);
+	read_file(path, buf, 32);
+	*result = (float)strtoull(buf, nullptr, 10) / (float)divider;
 }