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/*!
\file gd32e230c_eval.c
\brief firmware functions to manage leds, keys, COM ports
\version 2023-02-27, V1.2.0, firmware for GD32E23x
*/
/*
Copyright (c) 2023, GigaDevice Semiconductor Inc.
Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of its contributors
may be used to endorse or promote products derived from this software without
specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
OF SUCH DAMAGE.
*/
#include "gd32e230c_eval.h"
/* private variables */
static const uint32_t GPIO_PORT[LEDn] = {LED1_GPIO_PORT,
LED2_GPIO_PORT,
LED3_GPIO_PORT,
LED4_GPIO_PORT};
static const uint32_t GPIO_PIN[LEDn] = {LED1_PIN,
LED2_PIN,
LED3_PIN,
LED4_PIN};
static const rcu_periph_enum COM_CLK[COMn] = {EVAL_COM_CLK};
static const uint32_t COM_TX_PIN[COMn] = {EVAL_COM_TX_PIN};
static const uint32_t COM_RX_PIN[COMn] = {EVAL_COM_RX_PIN};
static const rcu_periph_enum GPIO_CLK[LEDn] = {LED1_GPIO_CLK,
LED2_GPIO_CLK,
LED3_GPIO_CLK,
LED4_GPIO_CLK};
static const uint32_t KEY_PORT[KEYn] = {WAKEUP_KEY_GPIO_PORT,
TAMPER_KEY_GPIO_PORT
};
static const uint32_t KEY_PIN[KEYn] = {WAKEUP_KEY_PIN,
TAMPER_KEY_PIN
};
static const rcu_periph_enum KEY_CLK[KEYn] = {WAKEUP_KEY_GPIO_CLK,
TAMPER_KEY_GPIO_CLK
};
static const exti_line_enum KEY_EXTI_LINE[KEYn] = {WAKEUP_KEY_EXTI_LINE,
TAMPER_KEY_EXTI_LINE
};
static const uint8_t KEY_PORT_SOURCE[KEYn] = {WAKEUP_KEY_EXTI_PORT_SOURCE,
TAMPER_KEY_EXTI_PORT_SOURCE
};
static const uint8_t KEY_PIN_SOURCE[KEYn] = {WAKEUP_KEY_EXTI_PIN_SOURCE,
TAMPER_KEY_EXTI_PIN_SOURCE
};
static const uint8_t KEY_IRQn[KEYn] = {WAKEUP_KEY_EXTI_IRQn,
TAMPER_KEY_EXTI_IRQn
};
/* eval board low layer private functions */
/*!
\brief configure led GPIO
\param[in] lednum: specify the led to be configured
\arg LED1
\arg LED2
\arg LED3
\arg LED4
\param[out] none
\retval none
*/
void gd_eval_led_init(led_typedef_enum lednum)
{
/* enable the led clock */
rcu_periph_clock_enable(GPIO_CLK[lednum]);
/* configure led GPIO port */
gpio_mode_set(GPIO_PORT[lednum], GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO_PIN[lednum]);
gpio_output_options_set(GPIO_PORT[lednum], GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, GPIO_PIN[lednum]);
GPIO_BC(GPIO_PORT[lednum]) = GPIO_PIN[lednum];
}
/*!
\brief turn on selected led
\param[in] lednum: specify the led to be turned on
\arg LED1
\arg LED2
\arg LED3
\arg LED4
\param[out] none
\retval none
*/
void gd_eval_led_on(led_typedef_enum lednum)
{
GPIO_BOP(GPIO_PORT[lednum]) = GPIO_PIN[lednum];
}
/*!
\brief turn off selected led
\param[in] lednum: specify the led to be turned off
\arg LED1
\arg LED2
\arg LED3
\arg LED4
\param[out] none
\retval none
*/
void gd_eval_led_off(led_typedef_enum lednum)
{
GPIO_BC(GPIO_PORT[lednum]) = GPIO_PIN[lednum];
}
/*!
\brief toggle selected led
\param[in] lednum: specify the led to be toggled
\arg LED1
\arg LED2
\arg LED3
\arg LED4
\param[out] none
\retval none
*/
void gd_eval_led_toggle(led_typedef_enum lednum)
{
GPIO_TG(GPIO_PORT[lednum]) = GPIO_PIN[lednum];
}
/*!
\brief configure key
\param[in] keynum: specify the key to be configured
\arg KEY_TAMPER: tamper key
\arg KEY_WAKEUP: wakeup key
\param[in] keymode: specify button mode
\arg KEY_MODE_GPIO: key will be used as simple IO
\arg KEY_MODE_EXTI: key will be connected to EXTI line with interrupt
\param[out] none
\retval none
*/
void gd_eval_key_init(key_typedef_enum keynum, keymode_typedef_enum keymode)
{
/* enable the key clock */
rcu_periph_clock_enable(KEY_CLK[keynum]);
rcu_periph_clock_enable(RCU_CFGCMP);
/* configure button pin as input */
gpio_mode_set(KEY_PORT[keynum], GPIO_MODE_INPUT, GPIO_PUPD_NONE, KEY_PIN[keynum]);
if (keymode == KEY_MODE_EXTI) {
/* enable and set key EXTI interrupt to the lowest priority */
nvic_irq_enable(KEY_IRQn[keynum], 2U);
/* connect key EXTI line to key GPIO pin */
syscfg_exti_line_config(KEY_PORT_SOURCE[keynum], KEY_PIN_SOURCE[keynum]);
/* configure key EXTI line */
exti_init(KEY_EXTI_LINE[keynum], EXTI_INTERRUPT, EXTI_TRIG_FALLING);
exti_interrupt_flag_clear(KEY_EXTI_LINE[keynum]);
}
}
/*!
\brief return the selected key state
\param[in] keynum: specify the key to be checked
\arg KEY_TAMPER: tamper key
\arg KEY_WAKEUP: wakeup key
\param[out] none
\retval the key's GPIO pin value
*/
uint8_t gd_eval_key_state_get(key_typedef_enum keynum)
{
return gpio_input_bit_get(KEY_PORT[keynum], KEY_PIN[keynum]);
}
/*!
\brief configure COM port
\param[in] com: COM on the board
\arg EVAL_COM: COM on the board
\param[out] none
\retval none
*/
void gd_eval_com_init(uint32_t com)
{
uint32_t COM_ID;
COM_ID = 0U;
/* enable COM GPIO clock */
rcu_periph_clock_enable(EVAL_COM_GPIO_CLK);
/* enable USART clock */
rcu_periph_clock_enable(COM_CLK[COM_ID]);
/* connect port to USARTx_Tx */
gpio_af_set(EVAL_COM_GPIO_PORT, EVAL_COM_AF, COM_TX_PIN[COM_ID]);
/* connect port to USARTx_Rx */
gpio_af_set(EVAL_COM_GPIO_PORT, EVAL_COM_AF, COM_RX_PIN[COM_ID]);
/* configure USART Tx as alternate function push-pull */
gpio_mode_set(EVAL_COM_GPIO_PORT, GPIO_MODE_AF, GPIO_PUPD_PULLUP, COM_TX_PIN[COM_ID]);
gpio_output_options_set(EVAL_COM_GPIO_PORT, GPIO_OTYPE_PP, GPIO_OSPEED_10MHZ, COM_TX_PIN[COM_ID]);
/* configure USART Rx as alternate function push-pull */
gpio_mode_set(EVAL_COM_GPIO_PORT, GPIO_MODE_AF, GPIO_PUPD_PULLUP, COM_RX_PIN[COM_ID]);
gpio_output_options_set(EVAL_COM_GPIO_PORT, GPIO_OTYPE_PP, GPIO_OSPEED_10MHZ, COM_RX_PIN[COM_ID]);
/* USART configure */
usart_deinit(com);
usart_baudrate_set(com, 115200U);
usart_receive_config(com, USART_RECEIVE_ENABLE);
usart_transmit_config(com, USART_TRANSMIT_ENABLE);
usart_enable(com);
}

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/*!
\file gd32e230c_eval.h
\brief definitions for GD32E230C_EVAL's leds, keys and COM ports hardware resources
\version 2023-02-27, V1.2.0, firmware for GD32E23x
*/
/*
Copyright (c) 2023, GigaDevice Semiconductor Inc.
Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of its contributors
may be used to endorse or promote products derived from this software without
specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
OF SUCH DAMAGE.
*/
#ifndef GD32E230C_EVAL_H
#define GD32E230C_EVAL_H
#ifdef __cplusplus
extern "C" {
#endif
#include "gd32e23x.h"
/* exported types */
typedef enum
{
LED1 = 0,
LED2 = 1,
LED3 = 2,
LED4 = 3
}led_typedef_enum;
typedef enum
{
KEY_WAKEUP = 0,
KEY_TAMPER = 1,
}key_typedef_enum;
typedef enum
{
KEY_MODE_GPIO = 0,
KEY_MODE_EXTI = 1
}keymode_typedef_enum;
/* eval board low layer led */
#define LEDn 4U
#define LED1_PIN GPIO_PIN_1
#define LED1_GPIO_PORT GPIOB
#define LED1_GPIO_CLK RCU_GPIOB
#define LED2_PIN GPIO_PIN_11
#define LED2_GPIO_PORT GPIOA
#define LED2_GPIO_CLK RCU_GPIOA
#define LED3_PIN GPIO_PIN_12
#define LED3_GPIO_PORT GPIOA
#define LED3_GPIO_CLK RCU_GPIOA
#define LED4_PIN GPIO_PIN_15
#define LED4_GPIO_PORT GPIOA
#define LED4_GPIO_CLK RCU_GPIOA
/* eval board low layer button */
#define KEYn 2U
/* wakeup push-button */
#define WAKEUP_KEY_PIN GPIO_PIN_0
#define WAKEUP_KEY_GPIO_PORT GPIOA
#define WAKEUP_KEY_GPIO_CLK RCU_GPIOA
#define WAKEUP_KEY_EXTI_LINE EXTI_0
#define WAKEUP_KEY_EXTI_PORT_SOURCE EXTI_SOURCE_GPIOA
#define WAKEUP_KEY_EXTI_PIN_SOURCE EXTI_SOURCE_PIN0
#define WAKEUP_KEY_EXTI_IRQn EXTI0_1_IRQn
/* tamper push-button */
#define TAMPER_KEY_PIN GPIO_PIN_13
#define TAMPER_KEY_GPIO_PORT GPIOC
#define TAMPER_KEY_GPIO_CLK RCU_GPIOC
#define TAMPER_KEY_EXTI_LINE EXTI_13
#define TAMPER_KEY_EXTI_PORT_SOURCE EXTI_SOURCE_GPIOC
#define TAMPER_KEY_EXTI_PIN_SOURCE EXTI_SOURCE_PIN13
#define TAMPER_KEY_EXTI_IRQn EXTI4_15_IRQn
/* eval board low layer COM */
#define COMn 1U
/* definition for COM, connected to USART0 */
#define EVAL_COM USART0
#define EVAL_COM_CLK RCU_USART0
#define EVAL_COM_TX_PIN GPIO_PIN_9
#define EVAL_COM_RX_PIN GPIO_PIN_10
#define EVAL_COM_GPIO_PORT GPIOA
#define EVAL_COM_GPIO_CLK RCU_GPIOA
#define EVAL_COM_AF GPIO_AF_1
/* function declarations */
/* configure led GPIO */
void gd_eval_led_init(led_typedef_enum lednum);
/* turn on selected led */
void gd_eval_led_on(led_typedef_enum lednum);
/* turn off selected led */
void gd_eval_led_off(led_typedef_enum lednum);
/* toggle the selected led */
void gd_eval_led_toggle(led_typedef_enum lednum);
/* configure key */
void gd_eval_key_init(key_typedef_enum keynum, keymode_typedef_enum keymode);
/* return the selected key state */
uint8_t gd_eval_key_state_get(key_typedef_enum keynum);
/* configure COM port */
void gd_eval_com_init(uint32_t com);
#ifdef __cplusplus
}
#endif
#endif /* GD32E230C_EVAL_H */