diff --git a/CMakeLists.txt b/CMakeLists.txt index 9135aef..30de3dc 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -18,11 +18,7 @@ set(TARGET_C_SRC ${CMAKE_SOURCE_DIR}/src/main.c ${CMAKE_SOURCE_DIR}/src/gd32e23x_it.c ${CMAKE_SOURCE_DIR}/src/systick.c - ${CMAKE_SOURCE_DIR}/src/rs485.c - ${CMAKE_SOURCE_DIR}/src/led.c - ${CMAKE_SOURCE_DIR}/src/i2c.c - ${CMAKE_SOURCE_DIR}/src/soft_i2c.c - ${CMAKE_SOURCE_DIR}/src/fwdgt.c + ${CMAKE_SOURCE_DIR}/src/peripheral.c ) add_executable(gd32e23x_template ${TARGET_C_SRC}) diff --git a/README.md b/README.md index f53230e..40b9a59 100644 --- a/README.md +++ b/README.md @@ -15,6 +15,7 @@ set(TARGET_C_SRC ${CMAKE_SOURCE_DIR}/src/main.c ${CMAKE_SOURCE_DIR}/src/gd32e23x_it.c ${CMAKE_SOURCE_DIR}/src/systick.c + ${CMAKE_SOURCE_DIR}/src/peripheral.c ) ``` ## 关于链接脚本 diff --git a/inc/board_config.h b/inc/board_config.h deleted file mode 100644 index c8a2284..0000000 --- a/inc/board_config.h +++ /dev/null @@ -1,44 +0,0 @@ -// -// Created by dell on 24-12-28. -// - -#ifndef BOARD_CONFIG_H -#define BOARD_CONFIG_H - -#define SOFTWARE_IIC - -// #define DEBUG_VERBOES - -/******************************************************************************/ - -#define RCU_GPIO_I2C RCU_GPIOF -#define RCU_I2C RCU_I2C0 -#define I2C_SCL_PORT GPIOF -#define I2C_SCL_PIN GPIO_PIN_1 -#define I2C_SDA_PORT GPIOF -#define I2C_SDA_PIN GPIO_PIN_0 -#define I2C_GPIO_AF GPIO_AF_1 - -/******************************************************************************/ - -#define RS485_RCU RCU_USART0 -#define RS485_GPIO_RCU RCU_GPIOA -#define RS485_GPIO_PORT GPIOA -#define RS485_TX_PIN GPIO_PIN_2 -#define RS485_RX_PIN GPIO_PIN_3 -#define RS485_PHY USART0 -#define RS485_BAUDRATE 115200U -#define RS485_EN_PIN GPIO_PIN_1 - -/******************************************************************************/ - -#define LED_PORT GPIOA -#define LED_PIN GPIO_PIN_7 -#define LED_RCU RCU_GPIOA -#define LED_BLINK_TIMER_RCU RCU_TIMER16 -#define LED_BLINK_TIMER TIMER16 -#define LED_BLINK_IRQ TIMER16_IRQn - -/******************************************************************************/ - -#endif //BOARD_CONFIG_H diff --git a/inc/fwdgt.h b/inc/fwdgt.h deleted file mode 100644 index 28da74c..0000000 --- a/inc/fwdgt.h +++ /dev/null @@ -1,15 +0,0 @@ -// -// Created by yelv1 on 24-12-29. -// - -#ifndef FWDGT_H -#define FWDGT_H - -#include "gd32e23x.h" -#include "board_config.h" - -void watchdog_init(void); - -void fwdgt_reset_mcu(void); - -#endif //FWDGT_H diff --git a/inc/i2c.h b/inc/i2c.h deleted file mode 100644 index 927e28d..0000000 --- a/inc/i2c.h +++ /dev/null @@ -1,48 +0,0 @@ -// -// Created by dell on 24-12-20. -// - -#ifndef I2C_H -#define I2C_H - -#include "gd32e23x_it.h" -#include "gd32e23x.h" -#include "systick.h" -#include "main.h" - -#include "board_config.h" - -/******************************************************************************/ - -#define I2C_SPEED 20000 - -#define I2C_TIME_OUT (uint16_t)(5000) -#define I2C_OK 1 -#define I2C_FAIL 0 -#define I2C_END 1 - -/******************************************************************************/ - -typedef enum { - I2C_START = 0, - I2C_SEND_ADDRESS, - I2C_CLEAR_ADDRESS_FLAG, - I2C_TRANSMIT_DATA, - I2C_STOP -} i2c_process_enum; - -/******************************************************************************/ - -void i2c_gpio_config(void); - -void i2c_config(void); - -void i2c_bus_reset(void); - -void i2c_scan(void); - -uint8_t i2c_write_16bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t data[2]); - -uint8_t i2c_read_16bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t *data); - -#endif //I2C_H diff --git a/inc/led.h b/inc/led.h deleted file mode 100644 index b02d4ee..0000000 --- a/inc/led.h +++ /dev/null @@ -1,13 +0,0 @@ -// -// Created by dell on 24-12-20. -// - -#ifndef LED_H -#define LED_H - -#include "gd32e23x_it.h" -#include "board_config.h" - -void led_config(void); - -#endif //LED_H diff --git a/inc/main.h b/inc/main.h index 15fde7c..dd037de 100644 --- a/inc/main.h +++ b/inc/main.h @@ -35,20 +35,4 @@ OF SUCH DAMAGE. #ifndef MAIN_H #define MAIN_H -#include -#include "gd32e23x.h" -#include "systick.h" -#include "gd32e23x_libopt.h" -#include "rs485.h" -#include "led.h" -#include "fwdgt.h" -#include "board_config.h" - -#ifdef SOFTWARE_IIC -#include "soft_i2c.h" -#else -#include "i2c.h" -#endif - - #endif /* MAIN_H */ diff --git a/inc/peripheral.h b/inc/peripheral.h new file mode 100644 index 0000000..31004a4 --- /dev/null +++ b/inc/peripheral.h @@ -0,0 +1,11 @@ +// +// Created by yelv1 on 24-9-22. +// + +#ifndef PERIPHERAL_H +#define PERIPHERAL_H + +void usart_config(void); +void led_blink_config(void); + +#endif //PERIPHERAL_H diff --git a/inc/rs485.h b/inc/rs485.h deleted file mode 100644 index c63cfd1..0000000 --- a/inc/rs485.h +++ /dev/null @@ -1,22 +0,0 @@ -// -// Created by dell on 24-12-3. -// - -#ifndef RS485_H -#define RS485_H - -#include "gd32e23x_it.h" -#include "gd32e23x.h" -#include "board_config.h" - -/******************************************************************************/ - -#define RX_BUFFER_SIZE 32 - -/******************************************************************************/ - -void usart_config(void); - -void rs485_config(void); - -#endif //RS485_H diff --git a/inc/soft_i2c.h b/inc/soft_i2c.h deleted file mode 100644 index 5b4d23e..0000000 --- a/inc/soft_i2c.h +++ /dev/null @@ -1,53 +0,0 @@ -// -// Created by dell on 24-12-28. -// - -#ifndef SOFT_I2C_H -#define SOFT_I2C_H - -#include "gd32e23x_it.h" -#include "gd32e23x.h" -#include "systick.h" -#include "main.h" - -#include "board_config.h" - -/******************************************************************************/ - -#define I2C_SCL_HIGH() gpio_bit_set(I2C_SCL_PORT, I2C_SCL_PIN) -#define I2C_SCL_LOW() gpio_bit_reset(I2C_SCL_PORT, I2C_SCL_PIN) -#define I2C_SDA_HIGH() gpio_bit_set(I2C_SDA_PORT, I2C_SDA_PIN) -#define I2C_SDA_LOW() gpio_bit_reset(I2C_SDA_PORT, I2C_SDA_PIN) -#define I2C_SDA_READ() gpio_input_bit_get(I2C_SDA_PORT, I2C_SDA_PIN) - -/******************************************************************************/ - -#define SOFT_I2C_OK 1 -#define SOFT_I2C_FAIL 0 -#define SOFT_I2C_END 1 - -/******************************************************************************/ - -void soft_i2c_delay(void); - -void soft_i2c_config(void); - -void soft_i2c_start(void); - -void soft_i2c_stop(void); - -void soft_i2c_send_ack(void); - -void soft_i2c_send_nack(void); - -uint8_t soft_i2c_wait_ack(void); - -void soft_i2c_send_byte(uint8_t data); - -uint8_t soft_i2c_receive_byte(uint8_t ack); - -uint8_t soft_i2c_write_16bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t data[2]); - -uint8_t soft_i2c_read_16bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t *data); - -#endif //SOFT_I2C_H diff --git a/sdk/CMSIS/src/system_gd32e23x.c b/sdk/CMSIS/src/system_gd32e23x.c index d8ab26e..84e5032 100644 --- a/sdk/CMSIS/src/system_gd32e23x.c +++ b/sdk/CMSIS/src/system_gd32e23x.c @@ -45,7 +45,7 @@ /* select a system clock by uncommenting the following line */ //#define __SYSTEM_CLOCK_8M_HXTAL (__HXTAL) -// #define __SYSTEM_CLOCK_8M_IRC8M (__IRC8M) +//#define __SYSTEM_CLOCK_8M_IRC8M (__IRC8M) // #define __SYSTEM_CLOCK_72M_PLL_HXTAL (uint32_t)(72000000) #define __SYSTEM_CLOCK_72M_PLL_IRC8M_DIV2 (uint32_t)(72000000) diff --git a/src/fwdgt.c b/src/fwdgt.c deleted file mode 100644 index b933237..0000000 --- a/src/fwdgt.c +++ /dev/null @@ -1,28 +0,0 @@ -// -// Created by yelv1 on 24-12-29. -// - -#include "fwdgt.h" - -void watchdog_init(void) { - /* Enable the LSI clock */ - rcu_osci_on(RCU_IRC40K); - rcu_osci_stab_wait(RCU_IRC40K); - - /* Configure FWDGT counter clock: 40KHz(IRC40K) / 64 = 0.625 KHz */ - fwdgt_config(625, FWDGT_PSC_DIV64); // Set timeout to 1 seconds (625 / 0.625 KHz) - - /* Enable FWDGT */ - fwdgt_enable(); -} - -void fwdgt_reset_mcu(void) { - /* Enable the write access to the FWDGT_CTL register */ - FWDGT_CTL = FWDGT_WRITEACCESS_ENABLE; - - /* Configure FWDGT to trigger a system reset */ - fwdgt_config(50, FWDGT_PSC_DIV4); - - /* Reload the counter to trigger the reset */ - fwdgt_counter_reload(); -} \ No newline at end of file diff --git a/src/gd32e23x_it.c b/src/gd32e23x_it.c index 520ce72..0c77955 100644 --- a/src/gd32e23x_it.c +++ b/src/gd32e23x_it.c @@ -35,8 +35,6 @@ OF SUCH DAMAGE. #include "gd32e23x_it.h" #include "main.h" #include "systick.h" -#include "rs485.h" -#include "led.h" /*! \brief this function handles NMI exception @@ -44,9 +42,10 @@ OF SUCH DAMAGE. \param[out] none \retval none */ -void NMI_Handler(void) { +void NMI_Handler(void) +{ /* if NMI exception occurs, go to infinite loop */ - while (1) { + while(1) { } } @@ -56,9 +55,10 @@ void NMI_Handler(void) { \param[out] none \retval none */ -void HardFault_Handler(void) { +void HardFault_Handler(void) +{ /* if Hard Fault exception occurs, go to infinite loop */ - while (1) { + while(1) { } } @@ -68,9 +68,10 @@ void HardFault_Handler(void) { \param[out] none \retval none */ -void SVC_Handler(void) { +void SVC_Handler(void) +{ /* if SVC exception occurs, go to infinite loop */ - while (1) { + while(1) { } } @@ -80,9 +81,10 @@ void SVC_Handler(void) { \param[out] none \retval none */ -void PendSV_Handler(void) { +void PendSV_Handler(void) +{ /* if PendSV exception occurs, go to infinite loop */ - while (1) { + while(1) { } } @@ -92,26 +94,26 @@ void PendSV_Handler(void) { \param[out] none \retval none */ -void SysTick_Handler(void) { +void SysTick_Handler(void) +{ } -/** - * @brief This function handles TIMER5 interrupt request. - * @param[in] none - * @param[out] none - * @retval None - */ -void TIMER16_IRQHandler(void) { - if (timer_interrupt_flag_get(LED_BLINK_TIMER, TIMER_INT_FLAG_UP) == SET) { - timer_interrupt_flag_clear(LED_BLINK_TIMER, TIMER_INT_FLAG_UP); +void TIMER13_IRQHandler(void) +{ + if (timer_interrupt_flag_get(TIMER13, TIMER_INT_FLAG_UP) == SET) + { + timer_interrupt_flag_clear(TIMER13, TIMER_INT_FLAG_UP); static uint8_t led_status = 0; - if (led_status) { - gpio_bit_write(LED_PORT, LED_PIN, RESET); - timer_autoreload_value_config(LED_BLINK_TIMER, 19200); + if (led_status) + { + //! turn on led & reconfig timer13 period to 19000(1900ms) + gpio_bit_write(GPIOB, GPIO_PIN_1, RESET); + timer_autoreload_value_config(TIMER13, 19200); } else { - gpio_bit_write(LED_PORT, LED_PIN, SET); - timer_autoreload_value_config(LED_BLINK_TIMER, 800); + //! turn off led & reconfig timer13 period to 1000(100ms) + gpio_bit_write(GPIOB, GPIO_PIN_1, SET); + timer_autoreload_value_config(TIMER13, 800); } led_status = !led_status; } -} +} \ No newline at end of file diff --git a/src/i2c.c b/src/i2c.c deleted file mode 100644 index 76381c7..0000000 --- a/src/i2c.c +++ /dev/null @@ -1,491 +0,0 @@ -// -// Created by dell on 24-12-20. -// - -#include "i2c.h" - -/*! - \brief configure the GPIO ports - \param[in] none - \param[out] none - \retval none -*/ -void i2c_gpio_config(void) { - /* enable IIC GPIO clock */ - rcu_periph_clock_enable(RCU_GPIO_I2C); - - /* connect I2C_SCL_PIN to I2C_SCL */ - gpio_af_set(I2C_SCL_PORT, I2C_GPIO_AF, I2C_SCL_PIN); - /* connect I2C_SDA_PIN to I2C_SDA */ - gpio_af_set(I2C_SDA_PORT, I2C_GPIO_AF, I2C_SDA_PIN); - /* configure GPIO pins of I2C */ - gpio_mode_set(I2C_SCL_PORT, GPIO_MODE_AF, GPIO_PUPD_PULLUP, I2C_SCL_PIN); - gpio_output_options_set(I2C_SCL_PORT, GPIO_OTYPE_OD, GPIO_OSPEED_50MHZ, I2C_SCL_PIN); - gpio_mode_set(I2C_SDA_PORT, GPIO_MODE_AF, GPIO_PUPD_PULLUP, I2C_SDA_PIN); - gpio_output_options_set(I2C_SDA_PORT, GPIO_OTYPE_OD, GPIO_OSPEED_50MHZ, I2C_SDA_PIN); -} - -/*! - \brief configure the I2CX interface - \param[in] none - \param[out] none - \retval none -*/ -void i2c_config(void) { - /* configure I2C GPIO */ - i2c_gpio_config(); - /* enable I2C clock */ - rcu_periph_clock_enable(RCU_I2C); - /* configure I2C clock */ - i2c_clock_config(I2C0, I2C_SPEED, I2C_DTCY_2); - /* configure I2C address */ - i2c_mode_addr_config(I2C0, I2C_I2CMODE_ENABLE, I2C_ADDFORMAT_7BITS, 0xA0); - /* enable I2CX */ - i2c_enable(I2C0); - /* enable acknowledge */ - i2c_ack_config(I2C0, I2C_ACK_ENABLE); -} - -/*! - \brief reset I2C bus - \param[in] none - \param[out] none - \retval none -*/ -void i2c_bus_reset(void) { - i2c_deinit(I2C0); - /* configure SDA/SCL for GPIO */ - GPIO_BC(I2C_SCL_PORT) |= I2C_SCL_PIN; - GPIO_BC(I2C_SDA_PORT) |= I2C_SDA_PIN; - gpio_output_options_set(I2C_SCL_PORT, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, I2C_SCL_PIN); - gpio_output_options_set(I2C_SDA_PORT, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, I2C_SDA_PIN); - __NOP(); - __NOP(); - __NOP(); - __NOP(); - __NOP(); - GPIO_BOP(I2C_SCL_PORT) |= I2C_SCL_PIN; - __NOP(); - __NOP(); - __NOP(); - __NOP(); - __NOP(); - GPIO_BOP(I2C_SDA_PORT) |= I2C_SDA_PIN; - /* connect I2C_SCL_PIN to I2C_SCL */ - /* connect I2C_SDA_PIN to I2C_SDA */ - gpio_output_options_set(I2C_SCL_PORT, GPIO_OTYPE_OD, GPIO_OSPEED_50MHZ, I2C_SCL_PIN); - gpio_output_options_set(I2C_SDA_PORT, GPIO_OTYPE_OD, GPIO_OSPEED_50MHZ, I2C_SDA_PIN); - /* configure the I2CX interface */ - i2c_config(); -} - -/** - * @brief 扫描I2C总线，查找连接的设备 - * - * 该函数会扫描I2C总线上的所有地址（1到126），并尝试与每个地址进行通信。 - * 如果在某个地址上发现了设备，则会打印出该设备的地址。 - * 最后会打印出找到的设备总数。 - */ -void i2c_scan(void) { - uint32_t timeout; - uint8_t address; - int found_devices = 0; - - printf("Scanning I2C bus...\r\n"); - - for (address = 1; address < 127; address++) { - timeout = 0; - - // 生成起始条件 - while (i2c_flag_get(I2C0, I2C_FLAG_I2CBSY) && (timeout < I2C_TIME_OUT)) - timeout++; - if (timeout >= I2C_TIME_OUT) { - continue; // 超时，跳过该地址 - } - i2c_start_on_bus(I2C0); - timeout = 0; - - // 等待起始条件发送完成 - while (!i2c_flag_get(I2C0, I2C_FLAG_SBSEND) && (timeout < I2C_TIME_OUT)) - timeout++; - if (timeout >= I2C_TIME_OUT) { - continue; // 超时，跳过该地址 - } - i2c_master_addressing(I2C0, (address << 1), I2C_TRANSMITTER); - timeout = 0; - - // 等待地址发送完成 - while (!i2c_flag_get(I2C0, I2C_FLAG_ADDSEND) && (timeout < I2C_TIME_OUT)) - timeout++; - if (timeout < I2C_TIME_OUT) { - i2c_flag_clear(I2C0, I2C_FLAG_ADDSEND); - printf("Found device at 0x%02X\r\n", address); - found_devices++; - } - - // 生成停止条件 - i2c_stop_on_bus(I2C0); - - timeout = 0; - - while (i2c_flag_get(I2C0, I2C_FLAG_STPDET) && (timeout < I2C_TIME_OUT)) - timeout++; - } - - if (found_devices == 0) { - printf("No I2C devices found.\r\n"); - } else { - printf("Total %d I2C devices found.\r\n", found_devices); - } -} - -/*! - \brief write 16 bits data to the specified register of the slave device - \param[in] slave_addr: slave device address - \param[in] reg_addr: register address - \param[in] data: data to be written - \param[out] none - \retval 0: failed, 1: success -*/ -uint8_t i2c_write_16bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t data[2]) { - uint8_t state = I2C_START; - uint16_t timeout = 0; - uint8_t i2c_timeout_flag = 0; - - /* enable acknowledge */ - i2c_ack_config(I2C0, I2C_ACK_ENABLE); - while (!(i2c_timeout_flag)) { - switch (state) { - case I2C_START: - /* i2c master sends start signal only when the bus is idle */ - while (i2c_flag_get(I2C0, I2C_FLAG_I2CBSY) && (timeout < I2C_TIME_OUT)) { - timeout++; - } - if (timeout < I2C_TIME_OUT) { - i2c_start_on_bus(I2C0); - timeout = 0; - state = I2C_SEND_ADDRESS; - } else { - timeout = 0; - state = I2C_START; -#ifdef DEBUG_VERBOES - printf("i2c bus is busy in WRITE BYTE!\n"); -#endif - } - break; - case I2C_SEND_ADDRESS: - /* i2c master sends START signal successfully */ - while ((!i2c_flag_get(I2C0, I2C_FLAG_SBSEND)) && (timeout < I2C_TIME_OUT)) { - timeout++; - } - if (timeout < I2C_TIME_OUT) { - i2c_master_addressing(I2C0, slave_addr, I2C_TRANSMITTER); - timeout = 0; - state = I2C_CLEAR_ADDRESS_FLAG; - } else { - timeout = 0; - state = I2C_START; -#ifdef DEBUG_VERBOES - printf("i2c master sends start signal timeout in WRITE BYTE!\n"); -#endif - } - break; - case I2C_CLEAR_ADDRESS_FLAG: - /* address flag set means i2c slave sends ACK */ - while ((!i2c_flag_get(I2C0, I2C_FLAG_ADDSEND)) && (timeout < I2C_TIME_OUT)) { - timeout++; - } - if (timeout < I2C_TIME_OUT) { - i2c_flag_clear(I2C0, I2C_FLAG_ADDSEND); - timeout = 0; - state = I2C_TRANSMIT_DATA; - } else { - timeout = 0; - state = I2C_START; -#ifdef DEBUG_VERBOES - printf("i2c master clears address flag timeout in WRITE BYTE!\n"); -#endif - } - break; - case I2C_TRANSMIT_DATA: - /* wait until the transmit data buffer is empty */ - while ((!i2c_flag_get(I2C0, I2C_FLAG_TBE)) && (timeout < I2C_TIME_OUT)) { - timeout++; - } - if (timeout < I2C_TIME_OUT) { - /* send IIC register address */ - i2c_data_transmit(I2C0, reg_addr); - timeout = 0; - } else { - timeout = 0; - state = I2C_START; -#ifdef DEBUG_VERBOES - printf("i2c master sends data timeout in WRITE BYTE!\n"); -#endif - } - - /* wait until BTC bit is set */ - while ((!i2c_flag_get(I2C0, I2C_FLAG_BTC)) && (timeout < I2C_TIME_OUT)) { - timeout++; - } - if (timeout < I2C_TIME_OUT) { - /* send register MSB value */ - i2c_data_transmit(I2C0, data[0]); - timeout = 0; - } else { - timeout = 0; - state = I2C_START; -#ifdef DEBUG_VERBOES - printf("i2c master sends MSB data timeout in WRITE BYTE!\n"); -#endif - } - - /* wait until BTC bit is set */ - while ((!i2c_flag_get(I2C0, I2C_FLAG_BTC)) && (timeout < I2C_TIME_OUT)) { - timeout++; - } - if (timeout < I2C_TIME_OUT) { - /* send register LSB value */ - i2c_data_transmit(I2C0, data[1]); - timeout = 0; - state = I2C_STOP; - } else { - timeout = 0; - state = I2C_START; -#ifdef DEBUG_VERBOES - printf("i2c master sends LSB data timeout in WRITE BYTE!\n"); -#endif - } - - /* wait until BTC bit is set */ - while ((!i2c_flag_get(I2C0, I2C_FLAG_BTC)) && (timeout < I2C_TIME_OUT)) { - timeout++; - } - if (timeout < I2C_TIME_OUT) { - state = I2C_STOP; - timeout = 0; - } else { - timeout = 0; - state = I2C_START; -#ifdef DEBUG_VERBOES - printf("i2c master sends data timeout in WRITE BYTE!\n"); -#endif - } - break; - case I2C_STOP: - /* send a stop condition to I2C bus */ - i2c_stop_on_bus(I2C0); - /* i2c master sends STOP signal successfully */ - while ((I2C_CTL0(I2C0) & I2C_CTL0_STOP) && (timeout < I2C_TIME_OUT)) { - timeout++; - } - if (timeout < I2C_TIME_OUT) { - timeout = 0; - state = I2C_END; - i2c_timeout_flag = I2C_OK; - } else { - timeout = 0; - state = I2C_START; -#ifdef DEBUG_VERBOES - printf("i2c master sends stop signal timeout in WRITE BYTE!\n"); -#endif - } - break; - default: - state = I2C_START; - i2c_timeout_flag = I2C_OK; - timeout = 0; -#ifdef DEBUG_VERBOES - printf("i2c master sends start signal in WRITE BYTE.\n"); -#endif - break; - } - } - return I2C_END; -} - -/*! - \brief read 16 bits data from the specified register of the slave device - \param[in] slave_addr: slave device address - \param[in] reg_addr: register address - \param[out] data: data to be read - \retval 0: failed, 1: success -*/ -uint8_t i2c_read_16bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t *data) { - uint8_t state = I2C_START; - uint8_t read_cycle = 0; - uint16_t timeout = 0; - uint8_t i2c_timeout_flag = 0; - uint8_t number_of_byte = 2; - - /* enable acknowledge */ - i2c_ack_config(I2C0, I2C_ACK_ENABLE); - - while (!(i2c_timeout_flag)) { - switch (state) { - case I2C_START: - if (RESET == read_cycle) { - /* i2c master sends start signal only when the bus is idle */ - while (i2c_flag_get(I2C0, I2C_FLAG_I2CBSY) && (timeout < I2C_TIME_OUT)) { - timeout++; - } - if (timeout < I2C_TIME_OUT) { - /* whether to send ACK or not for the next byte */ - i2c_ackpos_config(I2C0, I2C_ACKPOS_NEXT); - } else { - // i2c_bus_reset(); - timeout = 0; - state = I2C_START; -#ifdef DEBUG_VERBOES - printf("i2c bus is busy in READ!\n"); -#endif - } - } - /* send the start signal */ - i2c_start_on_bus(I2C0); - timeout = 0; - state = I2C_SEND_ADDRESS; - break; - case I2C_SEND_ADDRESS: - /* i2c master sends START signal successfully */ - while ((!i2c_flag_get(I2C0, I2C_FLAG_SBSEND)) && (timeout < I2C_TIME_OUT)) { - timeout++; - } - if (timeout < I2C_TIME_OUT) { - if (RESET == read_cycle) { - i2c_master_addressing(I2C0, slave_addr, I2C_TRANSMITTER); - state = I2C_CLEAR_ADDRESS_FLAG; - } else { - i2c_master_addressing(I2C0, slave_addr, I2C_RECEIVER); - i2c_ack_config(I2C0, I2C_ACK_DISABLE); - state = I2C_CLEAR_ADDRESS_FLAG; - } - timeout = 0; - } else { - timeout = 0; - state = I2C_START; - read_cycle = RESET; -#ifdef DEBUG_VERBOES - printf("i2c master sends start signal timeout in READ!\n"); -#endif - } - break; - case I2C_CLEAR_ADDRESS_FLAG: - /* address flag set means i2c slave sends ACK */ - while ((!i2c_flag_get(I2C0, I2C_FLAG_ADDSEND)) && (timeout < I2C_TIME_OUT)) { - timeout++; - } - if (timeout < I2C_TIME_OUT) { - i2c_flag_clear(I2C0, I2C_FLAG_ADDSEND); - if ((SET == read_cycle) && (1 == number_of_byte)) { - /* send a stop condition to I2C bus */ - i2c_stop_on_bus(I2C0); - } - timeout = 0; - state = I2C_TRANSMIT_DATA; - } else { - timeout = 0; - state = I2C_START; - read_cycle = RESET; -#ifdef DEBUG_VERBOES - printf("i2c master clears address flag timeout in READ!\n"); -#endif - } - break; - case I2C_TRANSMIT_DATA: - if (RESET == read_cycle) { - /* wait until the transmit data buffer is empty */ - while ((!i2c_flag_get(I2C0, I2C_FLAG_TBE)) && (timeout < I2C_TIME_OUT)) { - timeout++; - } - if (timeout < I2C_TIME_OUT) { - /* send the EEPROM's internal address to write to : only one byte address */ - i2c_data_transmit(I2C0, reg_addr); - timeout = 0; - } else { - timeout = 0; - state = I2C_START; - read_cycle = RESET; -#ifdef DEBUG_VERBOES - printf("i2c master wait data buffer is empty timeout in READ!\n"); -#endif - } - /* wait until BTC bit is set */ - while ((!i2c_flag_get(I2C0, I2C_FLAG_BTC)) && (timeout < I2C_TIME_OUT)) { - timeout++; - } - if (timeout < I2C_TIME_OUT) { - timeout = 0; - state = I2C_START; - read_cycle = SET; - } else { - timeout = 0; - state = I2C_START; - read_cycle = RESET; -#ifdef DEBUG_VERBOES - printf("i2c master sends register address timeout in READ!\n"); -#endif - } - } else { - while (number_of_byte) { - timeout++; - if (2 == number_of_byte) { - /* wait until BTC bit is set */ - while (!i2c_flag_get(I2C0, I2C_FLAG_BTC)); - /* send a stop condition to I2C bus */ - i2c_stop_on_bus(I2C0); - } - /* wait until RBNE bit is set */ - if (i2c_flag_get(I2C0, I2C_FLAG_RBNE)) { - /* read a byte from the EEPROM */ - *data = i2c_data_receive(I2C0); - /* point to the next location where the byte read will be saved */ - data++; - /* decrement the read bytes counter */ - number_of_byte--; - timeout = 0; - } - if (timeout > I2C_TIME_OUT) { - timeout = 0; - state = I2C_START; - read_cycle = 0; -#ifdef DEBUG_VERBOES - printf("i2c master sends data timeout in READ!\n"); -#endif - } - } - timeout = 0; - state = I2C_STOP; - } - break; - case I2C_STOP: - /* i2c master sends STOP signal successfully */ - while ((I2C_CTL0(I2C0) & I2C_CTL0_STOP) && (timeout < I2C_TIME_OUT)) { - timeout++; - } - if (timeout < I2C_TIME_OUT) { - timeout = 0; - state = I2C_END; - i2c_timeout_flag = I2C_OK; - } else { - timeout = 0; - state = I2C_START; - read_cycle = 0; -#ifdef DEBUG_VERBOES - printf("i2c master sends stop signal timeout in READ!\n"); -#endif - } - break; - default: - state = I2C_START; - read_cycle = 0; - i2c_timeout_flag = I2C_OK; - timeout = 0; -#ifdef DEBUG_VERBOES - printf("i2c master sends start signal in READ.\n"); -#endif - break; - } - } - return I2C_END; -} diff --git a/src/led.c b/src/led.c deleted file mode 100644 index 556e2ef..0000000 --- a/src/led.c +++ /dev/null @@ -1,38 +0,0 @@ -// -// Created by dell on 24-12-20. -// - -#include "led.h" - -/*! - \brief configure LED - \param[in] none - \param[out] none - \retval none -*/ -void led_config(void) { - rcu_periph_clock_enable(LED_RCU); - - gpio_mode_set(LED_PORT, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, LED_PIN); - gpio_output_options_set(LED_PORT, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, LED_PIN); - gpio_bit_write(LED_PORT, LED_PIN, SET); - - rcu_periph_clock_enable(LED_BLINK_TIMER_RCU); - timer_deinit(LED_BLINK_TIMER); - - timer_parameter_struct timer_initpara; - timer_struct_para_init(&timer_initpara); - timer_initpara.prescaler = 7199; - timer_initpara.alignedmode = TIMER_COUNTER_EDGE; - timer_initpara.counterdirection = TIMER_COUNTER_UP; - timer_initpara.period = 9999; - timer_initpara.clockdivision = TIMER_CKDIV_DIV1; - timer_init(LED_BLINK_TIMER, &timer_initpara); - - timer_auto_reload_shadow_enable(LED_BLINK_TIMER); - timer_interrupt_enable(LED_BLINK_TIMER, TIMER_INT_UP); - - timer_enable(LED_BLINK_TIMER); - - nvic_irq_enable(LED_BLINK_IRQ, 2); -} diff --git a/src/main.c b/src/main.c index 6dacc00..ec1f78d 100644 --- a/src/main.c +++ b/src/main.c @@ -5,6 +5,12 @@ \version 2024-02-22, V2.1.0, firmware for GD32E23x */ #include "main.h" +#include +#include "gd32e23x.h" +#include "systick.h" +#include "gd32e23x_libopt.h" + +#include "peripheral.h" /*! \brief main function @@ -12,26 +18,19 @@ \param[out] none \retval none */ -int main(void) { - // setbuf(stdout, NULL); +int main(void) +{ /* configure systick */ systick_config(); - /* configure USART */ - // rs485_config(); - /* configure LED */ - // led_config(); + usart_config(); + led_blink_config(); + delay_ms(5000); printf("system start!\r\n"); - rcu_periph_clock_enable(RCU_GPIOA); - - gpio_mode_set(GPIOA, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO_PIN_7); - gpio_output_options_set(GPIOA, GPIO_OTYPE_OD, GPIO_OSPEED_50MHZ, GPIO_PIN_7); - gpio_bit_write(GPIOA, GPIO_PIN_7, SET); - while(1){ printf("hello world!\r\n"); - delay_ms(1000); + delay_ms(5000); } } diff --git a/src/peripheral.c b/src/peripheral.c new file mode 100644 index 0000000..9e8d282 --- /dev/null +++ b/src/peripheral.c @@ -0,0 +1,63 @@ +// +// Created by yelv1 on 24-9-22. +// +#include "peripheral.h" +#include "gd32e23x.h" + +void usart_config(void) +{ + rcu_periph_clock_enable(RCU_GPIOA); + rcu_periph_clock_enable(RCU_USART0); + + gpio_af_set(GPIOA, GPIO_AF_1, GPIO_PIN_3); + gpio_af_set(GPIOA, GPIO_AF_1, GPIO_PIN_2); + + gpio_mode_set(GPIOA, GPIO_MODE_AF, GPIO_PUPD_PULLUP, GPIO_PIN_3); + gpio_output_options_set(GPIOA, GPIO_OTYPE_PP, GPIO_OSPEED_10MHZ, GPIO_PIN_3); + gpio_mode_set(GPIOA, GPIO_MODE_AF, GPIO_PUPD_PULLUP, GPIO_PIN_2); + gpio_output_options_set(GPIOA, GPIO_OTYPE_PP, GPIO_OSPEED_10MHZ, GPIO_PIN_2); + + usart_deinit(USART0); + usart_baudrate_set(USART0, 115200U); + usart_receive_config(USART0, USART_RECEIVE_ENABLE); + usart_transmit_config(USART0, USART_TRANSMIT_ENABLE); + + usart_enable(USART0); + + gpio_mode_set(GPIOA, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO_PIN_4); + gpio_output_options_set(GPIOA, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_4); + + gpio_bit_write(GPIOA, GPIO_PIN_4, SET); +} + +/*! + \brief led blink configuration + \param[in] none + \param[out] none + \retval none +*/ +void led_blink_config(void) +{ + rcu_periph_clock_enable(RCU_GPIOB); + + gpio_mode_set(GPIOB, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO_PIN_1); + gpio_output_options_set(GPIOB, GPIO_OTYPE_OD, GPIO_OSPEED_50MHZ, GPIO_PIN_1); + gpio_bit_write(GPIOB, GPIO_PIN_1, SET); + + rcu_periph_clock_enable(RCU_TIMER13); + timer_deinit(RCU_TIMER13); + + timer_parameter_struct timer_initpara; + timer_struct_para_init(&timer_initpara); + timer_initpara.prescaler =7199; + timer_initpara.alignedmode =TIMER_COUNTER_EDGE; + timer_initpara.counterdirection =TIMER_COUNTER_UP; + timer_initpara.period =999; + timer_initpara.clockdivision =TIMER_CKDIV_DIV1; + timer_init(TIMER13, &timer_initpara); + + timer_auto_reload_shadow_enable(TIMER13); + timer_interrupt_enable(TIMER13, TIMER_INT_UP); + nvic_irq_enable(TIMER13_IRQn, 0); + timer_enable(TIMER13); +} diff --git a/src/rs485.c b/src/rs485.c deleted file mode 100644 index 7d1f418..0000000 --- a/src/rs485.c +++ /dev/null @@ -1,49 +0,0 @@ -// -// Created by dell on 24-12-3. -// - -#include "rs485.h" - -/** - * @brief configure the USART0 - * @param none - * @retval none - */ -void usart_config(void) { - rcu_periph_clock_enable(RS485_GPIO_RCU); - rcu_periph_clock_enable(RS485_RCU); - - gpio_af_set(RS485_GPIO_PORT, GPIO_AF_1, GPIO_PIN_2 | GPIO_PIN_3); - - /* configure USART Tx&Rx as alternate function push-pull */ - gpio_mode_set(RS485_GPIO_PORT, GPIO_MODE_AF, GPIO_PUPD_PULLUP, RS485_TX_PIN | RS485_RX_PIN); - gpio_output_options_set(RS485_GPIO_PORT, GPIO_OTYPE_PP, GPIO_OSPEED_10MHZ, RS485_TX_PIN | RS485_RX_PIN); - - /* USART configure */ - usart_deinit(RS485_PHY); - usart_baudrate_set(RS485_PHY, RS485_BAUDRATE); - usart_receive_config(RS485_PHY, USART_RECEIVE_ENABLE); - usart_transmit_config(RS485_PHY, USART_TRANSMIT_ENABLE); - - usart_enable(RS485_PHY); - - nvic_irq_enable(USART0_IRQn, 0); - usart_interrupt_enable(RS485_PHY, USART_INT_RBNE); - usart_interrupt_enable(RS485_PHY, USART_INT_IDLE); -} - -/** - * @brief configure the RS485(MAX13487EESA) - * @param none - * @retval none - */ -void rs485_config(void) { - usart_config(); - - rcu_periph_clock_enable(RS485_GPIO_RCU); - - /* configure RS485 EN Pin */ - gpio_mode_set(RS485_GPIO_PORT, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, RS485_EN_PIN); - gpio_output_options_set(RS485_GPIO_PORT, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, RS485_EN_PIN); - gpio_bit_write(RS485_GPIO_PORT, RS485_EN_PIN, SET); // auto direction control -} diff --git a/src/soft_i2c.c b/src/soft_i2c.c deleted file mode 100644 index 69e0240..0000000 --- a/src/soft_i2c.c +++ /dev/null @@ -1,217 +0,0 @@ -// -// Created by dell on 24-12-28. -// - -#include "soft_i2c.h" - -/*! - \brief delay - \param[in] none - \param[out] none - \retval none -*/ -void soft_i2c_delay(void) { - delay_us(20); // Adjust delay as needed - /* delay to freq - * 15KHz: delay_us(20); - * 65KHz: delay_us(1); - */ -} - -/*! - \brief configure the software IIC GPIO - \param[in] none - \param[out] none - \retval none -*/ -void soft_i2c_config(void) { - rcu_periph_clock_enable(RCU_GPIO_I2C); - - gpio_mode_set(I2C_SCL_PORT, GPIO_MODE_OUTPUT, GPIO_PUPD_PULLUP, I2C_SCL_PIN); - gpio_output_options_set(I2C_SCL_PORT, GPIO_OTYPE_OD, GPIO_OSPEED_50MHZ, I2C_SCL_PIN); - - gpio_mode_set(I2C_SDA_PORT, GPIO_MODE_OUTPUT, GPIO_PUPD_PULLUP, I2C_SDA_PIN); - gpio_output_options_set(I2C_SDA_PORT, GPIO_OTYPE_OD, GPIO_OSPEED_50MHZ, I2C_SDA_PIN); - - I2C_SCL_HIGH(); - I2C_SDA_HIGH(); -} - -/*! - \brief generate I2C start signal - \param[in] none - \param[out] none - \retval none -*/ -void soft_i2c_start(void) { - I2C_SDA_HIGH(); - I2C_SCL_HIGH(); - soft_i2c_delay(); - I2C_SDA_LOW(); - soft_i2c_delay(); - I2C_SCL_LOW(); -} - -/*! - \brief generate I2C stop signal - \param[in] none - \param[out] none - \retval none -*/ -void soft_i2c_stop(void) { - // sda_out(); - I2C_SCL_LOW(); - I2C_SDA_LOW(); - soft_i2c_delay(); - I2C_SCL_HIGH(); - soft_i2c_delay(); - I2C_SDA_HIGH(); -} - -/*! - \brief send I2C ACK signal - \param[in] none - \param[out] none - \retval none -*/ -void soft_i2c_send_ack(void) { - // sda_out(); - I2C_SDA_LOW(); - soft_i2c_delay(); - I2C_SCL_HIGH(); - soft_i2c_delay(); - I2C_SCL_LOW(); - soft_i2c_delay(); - I2C_SDA_HIGH(); -} - -/*! - \brief send I2C NACK signal - \param[in] none - \param[out] none - \retval none -*/ -void soft_i2c_send_nack(void) { - I2C_SDA_HIGH(); - soft_i2c_delay(); - I2C_SCL_HIGH(); - soft_i2c_delay(); - I2C_SCL_LOW(); - soft_i2c_delay(); - I2C_SDA_HIGH(); -} - -/*! - \brief wait I2C ACK signal - \param[in] none - \param[out] none - \retval 0: ACK received, 1: ACK not received -*/ -uint8_t soft_i2c_wait_ack(void) { - I2C_SDA_HIGH(); - soft_i2c_delay(); - I2C_SCL_HIGH(); - soft_i2c_delay(); - uint8_t ack = !I2C_SDA_READ(); - I2C_SCL_LOW(); - return ack; -} - -/*! - \brief send a byte via I2C - \param[in] byte: byte to be sent - \param[out] none - \retval none -*/ -void soft_i2c_send_byte(uint8_t byte) { - // sda_out(); - for (int i = 0; i < 8; i++) { - if (byte & 0x80) { - I2C_SDA_HIGH(); - } else { - I2C_SDA_LOW(); - } - byte <<= 1; - soft_i2c_delay(); - I2C_SCL_HIGH(); - soft_i2c_delay(); - I2C_SCL_LOW(); - soft_i2c_delay(); - } -} - -/*! - \brief receive a byte via I2C - \param[in] ack: 1: send ACK, 0: send NACK - \param[out] none - \retval received byte -*/ -uint8_t soft_i2c_receive_byte(uint8_t ack) { - uint8_t byte = 0; - I2C_SDA_HIGH(); - for (int i = 0; i < 8; i++) { - byte <<= 1; - I2C_SCL_HIGH(); - soft_i2c_delay(); - if (I2C_SDA_READ()) { - byte |= 0x01; - } - I2C_SCL_LOW(); - soft_i2c_delay(); - } - if (ack) { - soft_i2c_send_ack(); - } else { - soft_i2c_send_nack(); - } - return byte; -} - -uint8_t soft_i2c_write_16bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t data[2]) { - soft_i2c_start(); - soft_i2c_send_byte(slave_addr); - if (!soft_i2c_wait_ack()) { - soft_i2c_stop(); - return SOFT_I2C_FAIL; - } - soft_i2c_send_byte(reg_addr); - if (!soft_i2c_wait_ack()) { - soft_i2c_stop(); - return SOFT_I2C_FAIL; - } - soft_i2c_send_byte(data[0]); - if (!soft_i2c_wait_ack()) { - soft_i2c_stop(); - return SOFT_I2C_FAIL; - } - soft_i2c_send_byte(data[1]); - if (soft_i2c_wait_ack()){} - soft_i2c_stop(); - return SOFT_I2C_OK; -} - -uint8_t soft_i2c_read_16bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t *data) -{ - soft_i2c_start(); - soft_i2c_send_byte(slave_addr); - if (!soft_i2c_wait_ack()) { - soft_i2c_stop(); - return SOFT_I2C_FAIL; - } - soft_i2c_send_byte(reg_addr); - if (!soft_i2c_wait_ack()) { - soft_i2c_stop(); - return SOFT_I2C_FAIL; - } - soft_i2c_start(); - soft_i2c_send_byte(slave_addr | 0x01); - if (!soft_i2c_wait_ack()) { - soft_i2c_stop(); - return SOFT_I2C_FAIL; - } - soft_i2c_delay(); - data[0] = soft_i2c_receive_byte(1); - data[1] = soft_i2c_receive_byte(0); - soft_i2c_stop(); - return SOFT_I2C_OK; -} \ No newline at end of file