Add firmware for the key cluster module based on the firmware of the left keyboard half.

keycluster/src/led_pwm.h

@@ -0,0 +1,27 @@
+#ifndef __LED_PWM_H__
+#define __LED_PWM_H__
+
+// Includes:
+
+    #include "fsl_tpm.h"
+
+// Macros:
+
+    #define LED_PWM_PORT  PORTB
+    #define LED_PWM_CLOCK kCLOCK_PortB
+    #define LED_PWM_PIN   5
+
+    #define LED_PWM_TPM_BASEADDR TPM1
+    #define LED_PWM_TPM_CHANNEL kTPM_Chnl_1
+
+    #define TPM_SOURCE_CLOCK CLOCK_GetFreq(kCLOCK_BusClk)
+    #define TPM_PWM_FREQUENCY 24000U
+
+    #define INITIAL_DUTY_CYCLE_PERCENT 100U
+
+// Functions:
+
+    void LedPwm_Init(void);
+    void LedPwm_SetBrightness(uint8_t brightnessPercent);
+
+#endif