Api hw gpio pwm (#199)

* initial gpio layer

* move temlplate.c to template.c.example in preparing to applications.mk rework

* separate arduino layer

* separate flipper_hal.x

* prepare to switch applications on v2 core gpio api

* swithch applications to v2 gpio api

* gpio api for local target

* better gpio_disable handling

* remove pwm functions from local target

* inline gpio funcs

* common function to init all api's

* fix local example blink

* move delay us to hal api folder

* move pwm_set/pwm_stop to hal api folder

* update applications to use hal pwm api

* remove gpio mode case warning

* add speaker demo to build

Co-authored-by: DrZlo13 <who.just.the.doctor@gmail.com>

firmware/targets/f2/api-hal/api-hal-delay.c

@@ -0,0 +1,14 @@
+#include "api-hal-delay.h"
+
+void delay_us_init_DWT(void) {
+    CoreDebug->DEMCR |= CoreDebug_DEMCR_TRCENA_Msk;
+    DWT->CTRL |= DWT_CTRL_CYCCNTENA_Msk;
+    DWT->CYCCNT = 0U;
+}
+
+void delay_us(float time) {
+    uint32_t start = DWT->CYCCNT;
+    uint32_t time_ticks = time * (SystemCoreClock / 1000000);
+    while((DWT->CYCCNT - start) < time_ticks) {
+    };
+}

firmware/targets/f2/api-hal/api-hal-delay.h

@@ -0,0 +1,5 @@
+#pragma once
+#include "main.h"
+
+void delay_us(float time);
+void delay_us_init_DWT(void);

firmware/targets/f2/api-hal/api-hal-gpio.c

@@ -0,0 +1,14 @@
+#include "api-hal-gpio.h"
+
+// init GPIO
+void hal_gpio_init(GpioPin* gpio, GpioMode mode, GpioPull pull, GpioSpeed speed) {
+    // TODO: Alternate Functions
+    GPIO_InitTypeDef GPIO_InitStruct = {0};
+
+    GPIO_InitStruct.Pin = gpio->pin;
+    GPIO_InitStruct.Mode = mode;
+    GPIO_InitStruct.Pull = pull;
+    GPIO_InitStruct.Speed = speed;
+
+    HAL_GPIO_Init(gpio->port, &GPIO_InitStruct);
+}

firmware/targets/f2/api-hal/api-hal-gpio.h

@@ -0,0 +1,61 @@
+#pragma once
+#include "main.h"
+#include "stdbool.h"
+
+// this defined in xx_hal_gpio.c, so...
+#define GPIO_NUMBER (16U)
+
+typedef enum {
+    GpioModeInput = GPIO_MODE_INPUT,
+    GpioModeOutputPushPull = GPIO_MODE_OUTPUT_PP,
+    GpioModeOutputOpenDrain = GPIO_MODE_OUTPUT_OD,
+    GpioModeAltFunctionPushPull = GPIO_MODE_AF_PP,
+    GpioModeAltFunctionOpenDrain = GPIO_MODE_AF_OD,
+    GpioModeAnalog = GPIO_MODE_ANALOG,
+    GpioModeInterruptRise = GPIO_MODE_IT_RISING,
+    GpioModeInterruptFall = GPIO_MODE_IT_FALLING,
+    GpioModeInterruptRiseFall = GPIO_MODE_IT_RISING_FALLING,
+    GpioModeEventRise = GPIO_MODE_EVT_RISING,
+    GpioModeEventFall = GPIO_MODE_EVT_FALLING,
+    GpioModeEventRiseFall = GPIO_MODE_EVT_RISING_FALLING,
+} GpioMode;
+
+typedef enum {
+    GpioSpeedLow = GPIO_SPEED_FREQ_LOW,
+    GpioSpeedMedium = GPIO_SPEED_FREQ_MEDIUM,
+    GpioSpeedHigh = GPIO_SPEED_FREQ_HIGH,
+    GpioSpeedVeryHigh = GPIO_SPEED_FREQ_VERY_HIGH,
+} GpioSpeed;
+
+typedef enum {
+    GpioPullNo = GPIO_NOPULL,
+    GpioPullUp = GPIO_PULLUP,
+    GpioPullDown = GPIO_PULLDOWN,
+} GpioPull;
+
+typedef struct {
+    GPIO_TypeDef* port;
+    uint16_t pin;
+} GpioPin;
+
+// init GPIO
+void hal_gpio_init(GpioPin* gpio, GpioMode mode, GpioPull pull, GpioSpeed speed);
+
+// write value to GPIO, false = LOW, true = HIGH
+static inline void hal_gpio_write(GpioPin* gpio, bool state) {
+    // writing to BSSR is an atomic operation
+    if(state == true) {
+        gpio->port->BSRR = gpio->pin;
+    } else {
+        gpio->port->BSRR = (uint32_t)gpio->pin << GPIO_NUMBER;
+    }
+}
+
+// read value from GPIO, false = LOW, true = HIGH
+static inline bool hal_gpio_read(GpioPin* gpio) {
+    if((gpio->port->IDR & gpio->pin) != 0x00U) {
+        return true;
+    } else {
+        return false;
+    }
+}

firmware/targets/f2/api-hal/api-hal-pwm.c

@@ -0,0 +1,22 @@
+#include "api-hal-pwm.h"
+
+void hal_pwm_set(float value, float freq, TIM_HandleTypeDef* tim, uint32_t channel) {
+    tim->Init.CounterMode = TIM_COUNTERMODE_UP;
+    tim->Init.Period = (uint32_t)((SystemCoreClock / (tim->Init.Prescaler + 1)) / freq);
+    tim->Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
+    tim->Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
+    HAL_TIM_PWM_Init(tim);
+
+    TIM_OC_InitTypeDef sConfigOC;
+
+    sConfigOC.OCMode = TIM_OCMODE_PWM1;
+    sConfigOC.Pulse = (uint16_t)(tim->Init.Period * value);
+    sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
+    sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
+    HAL_TIM_PWM_ConfigChannel(tim, &sConfigOC, channel);
+    HAL_TIM_PWM_Start(tim, channel);
+}
+
+void hal_pwm_stop(TIM_HandleTypeDef* tim, uint32_t channel) {
+    HAL_TIM_PWM_Stop(tim, channel);
+}

firmware/targets/f2/api-hal/api-hal-pwm.h

@@ -0,0 +1,6 @@
+#pragma once
+#include "main.h"
+#include "stdbool.h"
+
+void hal_pwm_set(float value, float freq, TIM_HandleTypeDef* tim, uint32_t channel);
+void hal_pwm_stop(TIM_HandleTypeDef* tim, uint32_t channel);

firmware/targets/f2/api-hal/api-hal.h

@@ -0,0 +1,5 @@
+#pragma once
+
+#include "api-hal-gpio.h"
+#include "api-hal-delay.h"
+#include "api-hal-pwm.h"