#include "hal_nca9555.h"
#define READ_SDA1 GPIO_ReadInputPins(GPIO_PORT_C,GPIO_PIN_10)
#define IIC_SDA1(n) (n?GPIO_SetPins(GPIO_PORT_C, GPIO_PIN_10):GPIO_ResetPins(GPIO_PORT_C, GPIO_PIN_10))
#define IIC_SCL1(n) (n?GPIO_SetPins(GPIO_PORT_C, GPIO_PIN_11):GPIO_ResetPins(GPIO_PORT_C, GPIO_PIN_11))
static void delay_us(uint16_t time)
{
uint16_t i;
for(i=time;i>0;i--)
{
__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();
__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();
__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();
__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();
__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();
__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();
__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();
__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();
__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();
__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();
__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();
__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();
__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();
__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();
__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();
__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();
__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();
__nop();__nop();__nop();
}
}
static void iic1_init(void)
{
stc_gpio_init_t pstcGpioInit1;
GPIO_StructInit(&pstcGpioInit1);
pstcGpioInit1.u16PinDir = PIN_DIR_OUT;
pstcGpioInit1.u16PinState = PIN_STAT_RST;
GPIO_Init(GPIO_PORT_C, GPIO_PIN_10,&pstcGpioInit1);
GPIO_Init(GPIO_PORT_C, GPIO_PIN_11,&pstcGpioInit1);
GPIO_SetPins(GPIO_PORT_C, GPIO_PIN_10);
GPIO_SetPins(GPIO_PORT_C, GPIO_PIN_11);
}
static void SDA_IN1(void)
{
stc_gpio_init_t pstcGpioInit3;//iic的引脚
pstcGpioInit3.u16PinDir = PIN_DIR_IN;
GPIO_Init(GPIO_PORT_C, GPIO_PIN_10,&pstcGpioInit3);
}
static void SDA_OUT1(void)
{
stc_gpio_init_t pstcGpioInit3;
pstcGpioInit3.u16PinDir = PIN_DIR_OUT;
pstcGpioInit3.u16PinOutputType=PIN_OUT_TYPE_NMOS;
GPIO_Init(GPIO_PORT_C, GPIO_PIN_10,&pstcGpioInit3);
}
static void iic_start(void)
{
SDA_OUT1();
IIC_SDA1(1);
IIC_SCL1(1);
delay_us(5);
IIC_SDA1(0);
delay_us(5);
IIC_SCL1(0);
}
static void iic_stop(void)
{
SDA_OUT1();
IIC_SCL1(0);
IIC_SDA1(0);
delay_us(5);
IIC_SCL1(1);
IIC_SDA1(1);
delay_us(5);
}
static void iic_ack(void)
{
SDA_OUT1();
IIC_SCL1(0);
IIC_SDA1(0);
delay_us(5);
IIC_SCL1(1);
delay_us(5);
IIC_SCL1(0);
}
static void iic_nack(void)
{
SDA_OUT1();
IIC_SCL1(0);
IIC_SDA1(1);
delay_us(5);
IIC_SCL1(1);
delay_us(5);
IIC_SCL1(0);
}
static uint8_t iic_wait_ack(void)
{
uint16_t t =200;
SDA_OUT1();
IIC_SDA1(1);delay_us(1);
IIC_SCL1(1);delay_us(1);
SDA_IN1();
while(READ_SDA1)
{
t--;
if(t==0)
{
iic_stop();
return 1;
}
delay_us(1);
}
IIC_SCL1(0);
return 0;
}
static void iic_send_byte(uint8_t byte)
{
uint8_t bit_cnt;
SDA_OUT1();
IIC_SCL1(0);
for(bit_cnt=0;bit_cnt<8;bit_cnt++)
{
if(byte&0x80)
IIC_SDA1(1);
else
IIC_SDA1(0);
byte<<=1;
delay_us(5);
IIC_SCL1(1);
delay_us(5);
IIC_SCL1(0);
}
}
static uint8_t iic_recive_byte(unsigned char ack)
{
uint8_t retc = 0;
uint8_t bit_cnt;
SDA_IN1();
for(bit_cnt=0;bit_cnt<8;bit_cnt++)
{
IIC_SCL1(0);
delay_us(5);
IIC_SCL1(1);
retc=retc<<1;
if(READ_SDA1) retc++;
delay_us(5);
}
return(retc);
}
void nca9555_init(void)
{
iic1_init();
}
uint8_t nca9555_write_byte(uint8_t addr, uint8_t command, uint8_t write_register_data)
{
uint8_t ret = 1;
iic_start();
iic_send_byte(addr);
ret = iic_wait_ack();
iic_send_byte(command);
ret = iic_wait_ack();
iic_send_byte(write_register_data);
ret = iic_wait_ack();
iic_stop();
return SUCCESS;
}
/*
* nca9555读取寄存器值
*
* addr 读取地址
* read_register_data 要读取的寄存器
* read_data 读取数据存放地址
*
*
* 返回值：读取成功返回SUCCESS 失败返回ERROR
*
* */
uint8_t nca9555_read_byte(uint8_t slave_num, uint8_t addr, uint8_t read_register_data, uint8_t *read_data)
{
uint8_t ret = 0;
iic_start();
iic_send_byte(slave_num);
ret = iic_wait_ack();
iic_send_byte(read_register_data);
ret = iic_wait_ack();
iic_start(); /* 开始接收数据 */
iic_send_byte(addr);
ret = iic_wait_ack();
*read_data = iic_recive_byte(0);
iic_stop();
return SUCCESS;
}
/*
* 设置指定GPIO的模式
*
* slave_num 需要操作的从机设备
* gpio_port gpio端口 端口0/1
* gpio_num 哪一个GPIO
*
* 返回值：void
* */
void nca9555_set_output_mode(uint8_t slave_num, uint8_t gpio_port, uint8_t gpio_num)
{
uint8_t register_original_data = 0;
if(gpio_port > 1 || gpio_num > 0x80) return;
if(gpio_port == 0)
{
nca9555_read_byte(slave_num, slave_num | HOST_READ_COMMAND, CONFIG_PORT_REGISTER0, ®ister_original_data);
nca9555_write_byte(slave_num | HOST_WRITE_COMMAND, CONFIG_PORT_REGISTER0, register_original_data & (~gpio_num));
}
else if(gpio_port == 1)
{
nca9555_read_byte(slave_num, slave_num | HOST_READ_COMMAND, CONFIG_PORT_REGISTER1, ®ister_original_data);
nca9555_write_byte( slave_num | HOST_WRITE_COMMAND, CONFIG_PORT_REGISTER1, register_original_data & (~gpio_num));
}
}
/*
* 设置GPIO输出状态
*
* slave_num 需要操作的从机设备
* gpio_port gpio端口 端口0/1
* gpio_num 哪一个GPIO
* status 输出状态
*
* 返回值：void
**/
void nca9555_set_gpio_output_status(uint8_t slave_num, uint8_t gpio_port, uint8_t gpio_num, uint8_t status)
{
uint8_t register_original_data = 0;
if(gpio_port > 1 || gpio_num > 0x80) return;
if(gpio_port == 0)
{
nca9555_read_byte(slave_num, slave_num | HOST_READ_COMMAND, OUTPUT_PORT_REGISTER0, ®ister_original_data);
if(status == 1)
{
nca9555_write_byte(slave_num | HOST_WRITE_COMMAND, OUTPUT_PORT_REGISTER0, register_original_data | gpio_num);
}
else
{
nca9555_write_byte(slave_num | HOST_WRITE_COMMAND, OUTPUT_PORT_REGISTER0, register_original_data & (~gpio_num));
}
}
else if(gpio_port == 1)
{
nca9555_read_byte(slave_num, slave_num | HOST_READ_COMMAND, OUTPUT_PORT_REGISTER1, ®ister_original_data);
if(status == 1)
{
nca9555_write_byte(slave_num | HOST_WRITE_COMMAND, OUTPUT_PORT_REGISTER1, register_original_data | gpio_num);
}
else
{
nca9555_write_byte(slave_num | HOST_WRITE_COMMAND, OUTPUT_PORT_REGISTER1, register_original_data & (~gpio_num));
}
}
}
/*
* 设置GPIO为输入模式
*
* slave_num 需要操作的从机设备
* gpio_port gpio端口 端口0/1
* gpio_num 哪一个GPIO
*
* 返回值：void
**/
void nca9555_set_input_mode(uint8_t slave_num, uint8_t gpio_port, uint8_t gpio_num)
{
uint8_t register_original_data = 0;
if(gpio_port > 1 || gpio_num > 0x80) return;
if(gpio_port == 0)
{
nca9555_read_byte(slave_num, slave_num | HOST_READ_COMMAND, CONFIG_PORT_REGISTER0, ®ister_original_data);
nca9555_write_byte(slave_num | HOST_WRITE_COMMAND, CONFIG_PORT_REGISTER0, register_original_data & gpio_num);
}
else if(gpio_port == 1)
{
nca9555_read_byte(slave_num, slave_num | HOST_READ_COMMAND, CONFIG_PORT_REGISTER1, ®ister_original_data);
nca9555_write_byte(slave_num | HOST_WRITE_COMMAND, CONFIG_PORT_REGISTER1, register_original_data & gpio_num);
}
}
/*
* 获取GPIO状态
*
* slave_num 需要操作的从机设备
* gpio_port gpio端口 端口0/1
* gpio_num 哪一个GPIO
*
* 返回值：GPIO状态
**/
uint8_t nca9555_get_gpio_status(uint8_t slave_num, uint8_t gpio_port, uint8_t gpio_num)
{
uint8_t register_original_data = 0;
uint8_t gpio_status = 0;
if(gpio_port > 1 || gpio_num > 0x80)
{
return 2;
}
if(gpio_port == 0)
{
nca9555_read_byte(slave_num, slave_num | HOST_READ_COMMAND, INPUT_PORT_REGISTER0, ®ister_original_data);
}
else if(gpio_port == 1)
{
nca9555_read_byte(slave_num, slave_num | HOST_READ_COMMAND, INPUT_PORT_REGISTER1, ®ister_original_data);
}
switch(gpio_num)
{
case 0x01: gpio_status = register_original_data & gpio_num;break;
case 0x02: gpio_status = (register_original_data & gpio_num) >> 1;break;
case 0x04: gpio_status = (register_original_data & gpio_num) >> 2;break;
case 0x08: gpio_status = (register_original_data & gpio_num) >> 3;break;
case 0x10: gpio_status = (register_original_data & gpio_num) >> 4;break;
case 0x20: gpio_status = (register_original_data & gpio_num) >> 5;break;
case 0x40: gpio_status = (register_original_data & gpio_num) >> 6;break;
case 0x80: gpio_status = (register_original_data & gpio_num) >> 7;break;
default: break;
}
return gpio_status;
}
#include "FreeRTOS.h"
#include "FreeRTOSConfig.h"
#include "task.h"
#include "hal_sc7a20.h"
void nca9555_task(void *argv)
{
nca9555_set_output_mode(SLAVE_ADDR0,GPIO_PORT0,GPIO_Pin00|GPIO_Pin01|GPIO_Pin02|GPIO_Pin03);
while(1)
{
nca9555_set_gpio_output_status(SLAVE_ADDR0,GPIO_PORT0,GPIO_Pin00|GPIO_Pin01|GPIO_Pin02|GPIO_Pin03,HIGH);
vTaskDelay(500);
nca9555_set_gpio_output_status(SLAVE_ADDR0,GPIO_PORT0,GPIO_Pin00|GPIO_Pin01|GPIO_Pin02|GPIO_Pin03,LOW);
vTaskDelay(500);
}
}