396 lines
11 KiB
C
396 lines
11 KiB
C
/****************************************************************************
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*
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* Copyright(c) 2019 by Aerospace C.Power (Chongqing) Microelectronics. ALL RIGHTS RESERVED.
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*
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* This Information is proprietary to Aerospace C.Power (Chongqing) Microelectronics and MAY NOT
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* be copied by any method or incorporated into another program without
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* the express written consent of Aerospace C.Power. This Information or any portion
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* thereof remains the property of Aerospace C.Power. The Information contained herein
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* is believed to be accurate and Aerospace C.Power assumes no responsibility or
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* liability for its use in any way and conveys no license or title under
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* any patent or copyright and makes no representation or warranty that this
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* Information is free from patent or copyright infringement.
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*
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* ****************************************************************************/
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#include "iot_errno.h"
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#include "iot_i2c_api.h"
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#include "iot_config_api.h"
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#include "iot_io_api.h"
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#include "iot_board_api.h"
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#include "os_utils_api.h"
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#include "iot_gpio_ex.h"
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#include "iot_gpio_api.h"
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#include "gpio.h"
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/* The iic config of tca9534a. */
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#define TCA9534A_SLAVER_ADDR (0x38)
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#define TCA9534A_INIT_COMPLETED (1)
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#define TCA9534A_INIT_UNCOMPLETED (0)
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#define TCA9534A_IIC_DEF_PORT (1) /* Port#0. */
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#define TCA9534A_IIC_DEF_SPEED (400) /* 400K. */
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#define TCA9534A_IIC_DEF_NACK_NUM (10) /* N-ACK number. */
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/* The gpio value addressof tca9534a. */
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#define TCA9534A_INPUT_PORT_REG0 (0x00)
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#define TCA9534A_OUTPUT_PORT_REG1 (0x01)
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#define TCA9534A_POLARITY_INV_REG2 (0x02)
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#define TCA9534A_DIRECTION_CONF_REG3 (0x03)
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/* tca9534a response time: ms. */
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#define TCA9534A_REGISTER_RESPONSE_TM (1)
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/* gpio number */
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#define TCA9534A_GPIO_NUMBER (8)
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#define TCA9534A_GPIO_VALID(gpio) (((gpio) >= 0) && \
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((gpio) < TCA9534A_GPIO_NUMBER))
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typedef struct _tca9534a_iic_cfg {
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uint8_t inited; /* IIC initialization done. 0-not yet, 1-done.*/
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uint8_t port; /* IIC port number. */
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uint32_t baud; /* IIC baudrate, unit is Kb. */
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uint8_t nack_wait_num; /* wait nack number. */
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uint16_t gpio_scl; /* SCL gpio pin. */
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uint16_t gpio_sda; /* SDA gpio pin. */
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} tca9534a_iic_cfg_t;
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static tca9534a_iic_cfg_t tca9534a_iic_cfg =
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{
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TCA9534A_INIT_UNCOMPLETED, /* IIC initialization uncompleted. */
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TCA9534A_IIC_DEF_PORT, /* IIC device port number. */
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TCA9534A_IIC_DEF_SPEED, /* Baudrate, unit is Kb. */
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TCA9534A_IIC_DEF_NACK_NUM, /* Wait nack number. */
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0, /* SCL gpio pin. */
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0 /* SDA gpio pin. */
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};
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static os_mutex_h gpio_ext_mutex = NULL;
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static uint8_t tca9534a_i2c_write_reg(uint8_t reg_addr, uint8_t val)
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{
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uint8_t ret = ERR_FAIL;
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char buf[2] = {0};
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buf[0] = reg_addr;
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buf[1] = val;
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gpio_debug_printf("[%s][info] arg1:%d, arg2:%d\n", __FUNCTION__, reg_addr,
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val);
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ret = iot_i2c_write(tca9534a_iic_cfg.port, TCA9534A_SLAVER_ADDR, buf, 2);
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os_delay(TCA9534A_REGISTER_RESPONSE_TM);
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if (ret != ERR_OK) {
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iot_printf("[%s][err] i2c write data error\n", __FUNCTION__);
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goto out;
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}
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out:
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return ret;
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}
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static uint8_t tca9534a_i2c_read_reg(uint8_t reg_addr, uint8_t *data,
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uint8_t len)
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{
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uint8_t ret = ERR_FAIL;
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char buf[2] = {0};
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buf[0] = reg_addr;
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gpio_debug_printf("[%s][info] arg1:%d, arg2:%d, arg3:%d\n", __FUNCTION__,
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reg_addr, *data, len);
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if ((data == NULL) || (len == 0)) {
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return ERR_FAIL;
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}
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ret = iot_i2c_write(tca9534a_iic_cfg.port, TCA9534A_SLAVER_ADDR, buf, 1);
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os_delay(TCA9534A_REGISTER_RESPONSE_TM);
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if (ret != ERR_OK) {
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iot_printf("[%s][err] i2c write data error\n", __FUNCTION__);
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goto out;
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}
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ret = iot_i2c_read(tca9534a_iic_cfg.port, TCA9534A_SLAVER_ADDR,
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(char *)data, len);
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os_delay(TCA9534A_REGISTER_RESPONSE_TM);
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if (ret != ERR_OK) {
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iot_printf("[%s][err] i2c read data error\n", __FUNCTION__);
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goto out;
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}
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out:
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return ret;
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}
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static uint8_t tca9534a_gpio_ex_open_as_in(uint8_t gpio_num)
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{
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uint8_t ret = ERR_FAIL;
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uint8_t data;
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uint8_t reg_addr = TCA9534A_DIRECTION_CONF_REG3;
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gpio_debug_printf("[%s][info] gpio num:%d\n", __FUNCTION__, gpio_num);
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if (!TCA9534A_GPIO_VALID(gpio_num)) {
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return ERR_FAIL;
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}
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os_acquire_mutex(gpio_ext_mutex);
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ret = tca9534a_i2c_read_reg(reg_addr, &data, 1);
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if (ret != ERR_OK) {
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iot_printf("[%s][err] open gpio ext as input mode error!\n", __FUNCTION__);
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goto out;
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}
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data |= 1 << gpio_num;
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ret = tca9534a_i2c_write_reg(reg_addr, data);
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if (ret != ERR_OK) {
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iot_printf("[%s][err] open gpio ext as input mode error!\n", __FUNCTION__);
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}
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out:
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os_release_mutex(gpio_ext_mutex);
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return ret;
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}
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static uint8_t tca9534a_gpio_ex_open_as_out(uint8_t gpio_num)
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{
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uint8_t ret = ERR_FAIL;
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uint8_t data;
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uint8_t reg_addr = TCA9534A_DIRECTION_CONF_REG3;
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gpio_debug_printf("[%s][info] gpio num:%d\n", __FUNCTION__, gpio_num);
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if (!TCA9534A_GPIO_VALID(gpio_num)) {
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return ERR_FAIL;
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}
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os_acquire_mutex(gpio_ext_mutex);
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ret = tca9534a_i2c_read_reg(reg_addr, &data, 1);
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os_delay(TCA9534A_REGISTER_RESPONSE_TM);
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if (ret != ERR_OK) {
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iot_printf("[%s][err] open gpio ext as output mode error!\n",
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__FUNCTION__);
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goto out;
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}
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data &= ~(1 << gpio_num);
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ret = tca9534a_i2c_write_reg(reg_addr, data);
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os_delay(TCA9534A_REGISTER_RESPONSE_TM);
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if (ret != ERR_OK) {
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iot_printf("[%s][err] open gpio ext as output mode error!\n",
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__FUNCTION__);
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}
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out:
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os_release_mutex(gpio_ext_mutex);
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return ret;
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}
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int tca9534a_gpio_ex_value_get(int gpio_num)
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{
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uint8_t reg_addr = TCA9534A_INPUT_PORT_REG0;
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uint8_t ret = ERR_FAIL;
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uint8_t value;
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gpio_debug_printf("[%s][info] gpio_num:%d\n", __FUNCTION__, gpio_num);
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if (TCA9534A_INIT_COMPLETED != tca9534a_iic_cfg.inited) {
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iot_printf("[%s][err] The chip is not initialized!\n", __FUNCTION__);
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return ERR_FAIL;
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}
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if (!TCA9534A_GPIO_VALID(gpio_num)) {
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return ERR_FAIL;
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}
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os_acquire_mutex(gpio_ext_mutex);
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ret = tca9534a_i2c_read_reg(reg_addr, &value, 1);
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if (ERR_OK != ret) {
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iot_printf("[%s][err] get gpio ext value error!\n", __FUNCTION__);
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goto out;
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}
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os_release_mutex(gpio_ext_mutex);
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return (value >> gpio_num) & 0x01;
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out:
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os_release_mutex(gpio_ext_mutex);
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return ret;
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}
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int tca9534a_gpio_ex_value_set(int gpio_num, int value)
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{
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uint8_t ret = ERR_FAIL;
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uint8_t data = 0;
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uint8_t reg_addr = TCA9534A_OUTPUT_PORT_REG1;
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gpio_debug_printf("[%s][info] gpio:%d, value:%d\n",
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__FUNCTION__, gpio_num, value);
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if (TCA9534A_INIT_COMPLETED != tca9534a_iic_cfg.inited) {
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iot_printf("[%s][err] The chip is not initialized!\n", __FUNCTION__);
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return ERR_FAIL;
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}
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if (!TCA9534A_GPIO_VALID(gpio_num)) {
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return ERR_FAIL;
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}
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os_acquire_mutex(gpio_ext_mutex);
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ret = tca9534a_i2c_read_reg(reg_addr, &data, 1);
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if (ERR_OK != ret) {
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iot_printf("[%s][err] get gpio ext value error!\n", __FUNCTION__);
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goto out;
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}
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if (0 == value) {
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data &= ~(1 << gpio_num);
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} else {
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data |= 1 << gpio_num;
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}
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ret = tca9534a_i2c_write_reg(reg_addr, data);
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if (ret != ERR_OK) {
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iot_printf("[%s][err] set gpio ext value error!\n", __FUNCTION__);
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}
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out:
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os_release_mutex(gpio_ext_mutex);
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return ret;
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}
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int tca9534a_gpio_ext_hw_set_mode(int gpio_num, int mode)
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{
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uint8_t ret = ERR_FAIL;
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gpio_debug_printf("[%s][info] gpio:%d,mode:%d\n", __FUNCTION__, gpio, mode);
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if (TCA9534A_INIT_COMPLETED != tca9534a_iic_cfg.inited) {
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iot_printf("[%s][err] The chip is not initialized!\n", __FUNCTION__);
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return ERR_FAIL;
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}
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if (!TCA9534A_GPIO_VALID(gpio_num)) {
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return ERR_FAIL;
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}
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os_acquire_mutex(gpio_ext_mutex);
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if (GPIO_INPUT == mode) {
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ret = tca9534a_gpio_ex_open_as_in(gpio_num);
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} else if (GPIO_OUTPUT == mode) {
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ret = tca9534a_gpio_ex_open_as_out(gpio_num);
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} else {
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/* not support */
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IOT_ASSERT(0);
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}
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if (ret != ERR_OK) {
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iot_printf("[%s][err] gpio ext set mode error!\n", __FUNCTION__);
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}
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os_release_mutex(gpio_ext_mutex);
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return ret;
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}
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int tca9534a_gpio_ext_hw_set_interrupt_mode(int gpio, int mode)
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{
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(void)gpio;
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(void)mode;
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return 0;
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}
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int tca9534a_gpio_ext_hw_get_int_status(int gpio)
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{
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(void)gpio;
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return 0;
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}
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int tca9534a_gpio_ext_hw_clear_int_status(int gpio)
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{
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(void)gpio;
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return 0;
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}
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int tca9534a_gpio_ext_hw_set_drain_mode(int gpio, int mode)
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{
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(void)gpio;
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(void)mode;
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return 0;
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}
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int tca9534a_gpio_init(void)
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{
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iot_i2c_module_cfg_t iic_cfg;
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uint8_t reg_addr = TCA9534A_DIRECTION_CONF_REG3;
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uint8_t data;
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if (gpio_ext_mutex == NULL) {
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gpio_ext_mutex = os_create_mutex(IOT_DRIVER_MID);
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}
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if (gpio_ext_mutex == NULL) {
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IOT_ASSERT(0);
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goto err;
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}
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if (tca9534a_iic_cfg.inited == TCA9534A_INIT_COMPLETED) {
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return ERR_OK;
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}
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tca9534a_iic_cfg.gpio_scl = iot_board_get_gpio(GPIO_EX_IO_I2C_SCL);
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tca9534a_iic_cfg.gpio_sda = iot_board_get_gpio(GPIO_EX_IO_I2C_SDA);
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if ((tca9534a_iic_cfg.gpio_scl == GPIO_NO_VALID) ||
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(tca9534a_iic_cfg.gpio_sda == GPIO_NO_VALID)) {
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iot_printf("[%s] init gpio ext chip tca9534a invalid!\n",
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__FUNCTION__);
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goto err;
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}
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iic_cfg.baud = tca9534a_iic_cfg.baud;
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iic_cfg.gpio.scl = tca9534a_iic_cfg.gpio_scl;
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iic_cfg.gpio.sda = tca9534a_iic_cfg.gpio_sda;
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iic_cfg.nack_wait_num = tca9534a_iic_cfg.nack_wait_num;
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iic_cfg.port = tca9534a_iic_cfg.port;
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if (ERR_OK != iot_i2c_module_init(&iic_cfg)) {
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iot_printf("[%s][err] i2c module init err!\n", __FUNCTION__);
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goto err;
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}
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if (ERR_OK != tca9534a_i2c_read_reg(reg_addr, &data, 1)) {
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iot_printf("[%s][err] i2c read reg failed!\n", __FUNCTION__);
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goto err;
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}
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iot_printf("[%s][info] init gpio ext chip tca9534a successfully!\n",
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__FUNCTION__);
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tca9534a_iic_cfg.inited = TCA9534A_INIT_COMPLETED;
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return ERR_OK;
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err:
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os_delete_mutex(gpio_ext_mutex);
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return ERR_FAIL;
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}
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iot_gpio_op_t hw_gpio_api_table_ext_tca9534a = {
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.gpio_init = tca9534a_gpio_init,
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.set_gpio_mode = tca9534a_gpio_ext_hw_set_mode,
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.set_interrupt_mode = tca9534a_gpio_ext_hw_set_interrupt_mode,
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.set_value = tca9534a_gpio_ex_value_set,
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.get_value = tca9534a_gpio_ex_value_get,
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.get_interrupt_status = tca9534a_gpio_ext_hw_get_int_status,
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.clear_interrupt_status = tca9534a_gpio_ext_hw_clear_int_status,
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.set_gpio_open_drain = tca9534a_gpio_ext_hw_set_drain_mode,
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}; |