From eeb7b3fc6fbde76b86582498f98524e27726bdb7 Mon Sep 17 00:00:00 2001
From: Yilin Sun <imi415@imi.moe>
Date: Fri, 24 Mar 2023 18:46:34 +0800
Subject: [PATCH] Implemented some PWM.

Signed-off-by: Yilin Sun <imi415@imi.moe>
---
 CMakeLists.txt                              |  1 +
 lib/mruby                                   |  2 +-
 src/mrb_machine_impl/mrb_machine_pwm_impl.c | 34 +++++++++++++++++++++
 3 files changed, 36 insertions(+), 1 deletion(-)
 create mode 100644 src/mrb_machine_impl/mrb_machine_pwm_impl.c

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6073fb5..93cf167 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -67,6 +67,7 @@ set(TARGET_SOURCES
     "src/app_syscalls.c"
     "src/mrb_machine_impl/mrb_machine_adc_impl.c"
     "src/mrb_machine_impl/mrb_machine_gpio_impl.c"
+    "src/mrb_machine_impl/mrb_machine_pwm_impl.c"
     "src/main.c"
 )
 
diff --git a/lib/mruby b/lib/mruby
index 1c6b50a..ef83164 160000
--- a/lib/mruby
+++ b/lib/mruby
@@ -1 +1 @@
-Subproject commit 1c6b50af4e36a96beca732cab5f1029c3138db75
+Subproject commit ef83164ddba5403ec1e8eff4c102af907353bc95
diff --git a/src/mrb_machine_impl/mrb_machine_pwm_impl.c b/src/mrb_machine_impl/mrb_machine_pwm_impl.c
new file mode 100644
index 0000000..1948cbf
--- /dev/null
+++ b/src/mrb_machine_impl/mrb_machine_pwm_impl.c
@@ -0,0 +1,34 @@
+#include <stdio.h>
+
+/* Board */
+#include "board.h"
+
+/* SDK drivers */
+#include "fsl_ctimer.h"
+#include "fsl_gpio.h"
+#include "fsl_iocon.h"
+
+/* Gem private */
+#include "machine-pwm/src/pwm.h"
+
+#define PWM_IMPL_CT_ID (x)((x >> 2) & 0x07)
+
+static const uint32_t pwm_channel_map[5][4] = {
+    {0x00000000UL, 0x00000000UL, 0x00000000UL, 0x00000000UL},  // CTIMER0
+    {0x00000000UL, 0x00000000UL, 0x00000000UL, 0x00000000UL},  // CTIMER1
+    {0x00000000UL, 0x00000000UL, 0x00000000UL, 0x00000000UL},  // CTIMER2
+    {0x00000000UL, 0x00000000UL, 0x00000000UL, 0x00000000UL},  // CTIMER3
+    {0x00000000UL, 0x00000000UL, 0x00000000UL, 0x00000000UL},  // CTIMER4
+};
+
+int mrb_machine_pwm_impl_config_set(uint32_t channel, machine_pwm_config_t *config) {
+    printf("Init pin: %ld, freq: %ld, duty: %d\n", channel, config->freq, config->duty);
+    return 0;
+}
+
+int mrb_machine_pwm_impl_config_get(uint32_t channel, machine_pwm_config_t *config) {
+    config->freq    = 1000;
+    config->duty    = 32768;
+    config->enabled = true;
+    return 0;
+}
\ No newline at end of file