123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204 |
- /*!
- \file main.c
- \brief master transmitter slave receiver interrupt
- \version 2017-02-10, V1.0.0, firmware for GD32F30x
- \version 2018-10-10, V1.1.0, firmware for GD32F30x
- \version 2018-12-25, V2.0.0, firmware for GD32F30x
- \version 2020-09-30, V2.1.0, firmware for GD32F30x
- */
- /*
- Copyright (c) 2020, 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 "gd32f30x.h"
- #include <stdio.h>
- #include "I2C_IE.h"
- #include "gd32f307c_eval.h"
- uint8_t i2c_buffer_transmitter[16];
- uint8_t i2c_buffer_receiver[16];
- volatile uint8_t *i2c_txbuffer;
- volatile uint8_t *i2c_rxbuffer;
- volatile uint16_t I2C_nBytes;
- volatile ErrStatus status;
- volatile ErrStatus state = ERROR;
- void rcu_config(void);
- void gpio_config(void);
- void i2c_config(void);
- void i2c_nvic_config(void);
- ErrStatus memory_compare(uint8_t *src, uint8_t *dst, uint16_t length);
- /*!
- \brief main function
- \param[in] none
- \param[out] none
- \retval none
- */
- int main(void)
- {
- uint8_t i;
- /* initialize LED2, LED3, as the transfer instruction */
- gd_eval_led_init(LED2);
- gd_eval_led_init(LED3);
- rcu_config();
- gpio_config();
- i2c_config();
- i2c_nvic_config();
- for(i = 0; i < 16; i++) {
- i2c_buffer_transmitter[i] = i + 0x80;
- }
- /* initialize i2c_txbuffer, i2c_rxbuffer, I2C_nBytes and status */
- i2c_txbuffer = i2c_buffer_transmitter;
- i2c_rxbuffer = i2c_buffer_receiver;
- I2C_nBytes = 16;
- status = ERROR;
- /* enable the I2C0 interrupt */
- i2c_interrupt_enable(I2C0, I2C_INT_ERR);
- i2c_interrupt_enable(I2C0, I2C_INT_BUF);
- i2c_interrupt_enable(I2C0, I2C_INT_EV);
- /* enable the I2C1 interrupt */
- i2c_interrupt_enable(I2C1, I2C_INT_ERR);
- i2c_interrupt_enable(I2C1, I2C_INT_BUF);
- i2c_interrupt_enable(I2C1, I2C_INT_EV);
- /* the master waits until the I2C bus is idle */
- while(i2c_flag_get(I2C0, I2C_FLAG_I2CBSY));
- /* the master sends a start condition to I2C bus */
- i2c_start_on_bus(I2C0);
- while((I2C_nBytes > 0));
- while(SUCCESS != status);
- /* if the transfer is successfully completed, LED2 and LED3 is on */
- state = memory_compare(i2c_buffer_transmitter, i2c_buffer_receiver, 16);
- if(SUCCESS == state) {
- /* if success, LED2 and LED3 are on */
- gd_eval_led_on(LED2);
- gd_eval_led_on(LED3);
- } else {
- /* if failed, LED2 and LED3 are off */
- gd_eval_led_off(LED2);
- gd_eval_led_off(LED3);
- }
- while(1) {
- }
- }
- /*!
- \brief memory compare function
- \param[in] src : source data
- \param[in] dst : destination data
- \param[in] length : the compare data length
- \param[out] none
- \retval ErrStatus : ERROR or SUCCESS
- */
- ErrStatus memory_compare(uint8_t *src, uint8_t *dst, uint16_t length)
- {
- while(length--) {
- if(*src++ != *dst++) {
- return ERROR;
- }
- }
- return SUCCESS;
- }
- /*!
- \brief enable the peripheral clock
- \param[in] none
- \param[out] none
- \retval none
- */
- void rcu_config(void)
- {
- /* enable GPIOB clock */
- rcu_periph_clock_enable(RCU_GPIOB);
- /* enable I2C1 clock */
- rcu_periph_clock_enable(RCU_I2C1);
- /* enable I2C0 clock */
- rcu_periph_clock_enable(RCU_I2C0);
- }
- /*!
- \brief cofigure the GPIO ports.
- \param[in] none
- \param[out] none
- \retval none
- */
- void gpio_config(void)
- {
- /* connect PB6 to I2C0_SCL */
- /* connect PB7 to I2C0_SDA */
- /* connect PB10 to I2C1_SCL */
- /* connect PB11 to I2C1_SDA */
- gpio_init(GPIOB, GPIO_MODE_AF_OD, GPIO_OSPEED_50MHZ, GPIO_PIN_6 | GPIO_PIN_7 | GPIO_PIN_10 | GPIO_PIN_11);
- }
- /*!
- \brief cofigure the I2C0 and I2C1 interfaces..
- \param[in] none
- \param[out] none
- \retval none
- */
- void i2c_config(void)
- {
- /* configure I2C clock */
- i2c_clock_config(I2C0, 100000, I2C_DTCY_2);
- /* configure I2C address */
- i2c_mode_addr_config(I2C0, I2C_I2CMODE_ENABLE, I2C_ADDFORMAT_7BITS, I2C0_SLAVE_ADDRESS7);
- /* enable I2C0 */
- i2c_enable(I2C0);
- /* enable acknowledge */
- i2c_ack_config(I2C0, I2C_ACK_ENABLE);
- i2c_clock_config(I2C1, 100000, I2C_DTCY_2);
- /* configure I2C address */
- i2c_mode_addr_config(I2C1, I2C_I2CMODE_ENABLE, I2C_ADDFORMAT_7BITS, I2C1_SLAVE_ADDRESS7);
- /* enable I2C1 */
- i2c_enable(I2C1);
- /* enable acknowledge */
- i2c_ack_config(I2C1, I2C_ACK_ENABLE);
- }
- /*!
- \brief cofigure the NVIC peripheral
- \param[in] none
- \param[out] none
- \retval none
- */
- void i2c_nvic_config(void)
- {
- nvic_priority_group_set(NVIC_PRIGROUP_PRE1_SUB3);
- nvic_irq_enable(I2C0_EV_IRQn, 0, 3);
- nvic_irq_enable(I2C1_EV_IRQn, 0, 4);
- nvic_irq_enable(I2C0_ER_IRQn, 0, 2);
- nvic_irq_enable(I2C1_ER_IRQn, 0, 1);
- }
|