From 16c9d26530faf907ae96d5c977852d949ddf1f0f Mon Sep 17 00:00:00 2001
From: FozzTexx <fozztexx@fozztexx.com>
Date: Sat, 28 Sep 2024 10:49:24 -0700
Subject: [PATCH] Revert "Use driver/gptimer.h"

This reverts commit a017eba15ea62de5e0056ca38f3394e51d46671e.
---
 lib/hardware/fnHardwareTimer.cpp | 24 ++++++++++++++++++++----
 lib/hardware/fnHardwareTimer.h   | 25 ++++++++++++++++++++++++-
 2 files changed, 44 insertions(+), 5 deletions(-)

diff --git a/lib/hardware/fnHardwareTimer.cpp b/lib/hardware/fnHardwareTimer.cpp
index b499285e1..ae2159d0d 100644
--- a/lib/hardware/fnHardwareTimer.cpp
+++ b/lib/hardware/fnHardwareTimer.cpp
@@ -77,18 +77,34 @@ void HardwareTimer::config()
   //     uint32_t divider;               /*!< Counter clock divider */
   // } timer_config_t;
 
+#if defined(CONFIG_IDF_TARGET_ESP32S3)
+
 fn_config.direction = GPTIMER_COUNT_UP,
 fn_config.clk_src = GPTIMER_CLK_SRC_APB;
-#if defined(CONFIG_IDF_TARGET_ESP32)
-fn_config.resolution_hz = APB_CLK_FREQ / TIMER_DIVIDER;
-#else
 fn_config.resolution_hz = 10000000;
-#endif
 
 gptimer_new_timer(&fn_config, &gptimer);
 gptimer_enable(gptimer);
 gptimer_start(gptimer);
 
+#else
+
+fn_config.alarm_en = TIMER_ALARM_DIS;
+fn_config.counter_en = TIMER_PAUSE;
+fn_config.intr_type = TIMER_INTR_LEVEL;
+fn_config.counter_dir = TIMER_COUNT_UP;
+fn_config.auto_reload = TIMER_AUTORELOAD_DIS;
+#if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 0, 0)
+fn_config.clk_src = TIMER_SRC_CLK_APB;
+#endif
+fn_config.divider = TIMER_DIVIDER; // default clock source is APB
+
+timer_init(TIMER_GROUP_1, TIMER_1, &fn_config);
+timer_set_counter_value(TIMER_GROUP_1, TIMER_1, 0);
+timer_start(TIMER_GROUP_1, TIMER_1);
+
+#endif
+
 }
 
 HardwareTimer fnTimer; // global object for the hardware timer
diff --git a/lib/hardware/fnHardwareTimer.h b/lib/hardware/fnHardwareTimer.h
index 2447319aa..5a951fd71 100644
--- a/lib/hardware/fnHardwareTimer.h
+++ b/lib/hardware/fnHardwareTimer.h
@@ -4,7 +4,9 @@
 #include "esp_idf_version.h"
 #include "sdkconfig.h"
 
-#if defined(CONFIG_IDF_TARGET_ESP32) || defined(CONFIG_IDF_TARGET_ESP32S3)
+#if defined(CONFIG_IDF_TARGET_ESP32)
+#include "driver/timer.h"
+#elif defined(CONFIG_IDF_TARGET_ESP32S3)
 #include "driver/gptimer.h"
 #else
 #error "neither esp32 or s3"
@@ -40,12 +42,19 @@ class HardwareTimer
   } fn_timer;
 
 
+#if defined(CONFIG_IDF_TARGET_ESP32S3)
 gptimer_handle_t gptimer;
 gptimer_config_t fn_config;
 //gptimer_alarm_config_t alarm_config;
+#else
+timer_config_t fn_config;
+#endif
 
 public:
   void config();
+
+#if defined(CONFIG_IDF_TARGET_ESP32S3)
+
   void reset() { gptimer_set_raw_count(gptimer, 0); };
   void latch() {};
   void read() { 
@@ -54,6 +63,20 @@ gptimer_config_t fn_config;
     fn_timer.t0 = count & 0xFFFFFFFF;
   };
 
+#else
+
+#if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 0, 0)
+  void reset() { TIMERG1.hw_timer[TIMER_1].loadlo.val = 0; TIMERG1.hw_timer[TIMER_1].load.val = 0; };
+  void latch() { TIMERG1.hw_timer[TIMER_1].update.val = 0; };
+  void read() { fn_timer.t0 = TIMERG1.hw_timer[TIMER_1].lo.val; };
+#else
+  void reset() { TIMERG1.hw_timer[TIMER_1].load_low = 0; TIMERG1.hw_timer[TIMER_1].reload = 0; };
+  void latch() { TIMERG1.hw_timer[TIMER_1].update = 0; };
+  void read() { fn_timer.t0 = TIMERG1.hw_timer[TIMER_1].cnt_low; };
+#endif
+
+#endif
+
   bool timeout() { return (fn_timer.t0 > fn_timer.tn); };
   void wait() { do{latch(); read();} while (!timeout()); };
   void alarm_set(int s) { fn_timer.tn = fn_timer.t0 + s * TIMER_100NS_FACTOR - TIMER_ADJUST; };