296 lines
6.4 KiB
C
296 lines
6.4 KiB
C
/* cc2520_arch.h - TI CC2520 arch/driver model specific header */
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/*
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* Copyright (c) 2015 Intel Corporation.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/* You should not include this file directly and it should only be
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* included by board.h file.
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*/
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#ifndef __CC2520_ARCH_H__
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#define __CC2520_ARCH_H__
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#include <nanokernel.h>
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#include <stdbool.h>
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#include <string.h>
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#include <spi.h>
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#include <gpio.h>
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#include "cc2520.h"
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#if CONFIG_TI_CC2520_DEBUG
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#define DRIVER_STR "TI cc2520 driver"
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#if defined(CONFIG_STDOUT_CONSOLE)
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#include <stdio.h>
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#define DBG printf
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#else
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#include <misc/printk.h>
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#define DBG printk
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#endif
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#else
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#define DBG(...)
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#endif /* CONFIG_TI_CC2520_DEBUG */
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#ifndef CLOCK_CYCLE_LT
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#define CLOCK_CYCLE_LT(a, b) ((signed)((a)-(b)) < 0)
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#endif
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#ifndef CLOCK_MSEC_TO_CYCLES
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#define CLOCK_MSEC_TO_CYCLES(msec) \
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((msec) * sys_clock_hw_cycles_per_tick * \
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sys_clock_us_per_tick / 1000)
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#endif
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#define CONFIG_CC2520_DRV_NAME "CC2520"
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struct cc2520_gpio_config {
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struct device *gpio;
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};
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struct cc2520_config {
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struct cc2520_gpio_config **gpios;
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struct device *spi;
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uint32_t spi_slave;
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};
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extern struct cc2520_gpio_config cc2520_gpio_config[CC2520_GPIO_IDX_LAST_ENTRY];
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extern struct cc2520_config cc2520_config;
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extern struct device *cc2520_sgl_dev;
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typedef void (*cc2520_gpio_int_handler_t)(struct device *port, uint32_t pin);
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struct cc2520_gpio_config **cc2520_gpio_configure(void);
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#define CC2520_GPIO(p) \
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(((struct device *)& \
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((struct cc2520_config *) \
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cc2520_sgl_dev-> \
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config->config_info)->gpios[CC2520_GPIO_IDX_ ## p]->gpio))
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#define CC2520_SPI() \
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(((struct cc2520_config *) \
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cc2520_sgl_dev->config->config_info)->spi)
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#define CC2520_SPI_SLAVE() \
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(((struct cc2520_config *) \
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cc2520_sgl_dev->config->config_info)->spi_slave)
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static inline bool spi_transfer(struct device *dev,
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uint8_t *data_out, uint8_t *data_in, int len)
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{
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uint32_t out_len, in_len;
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int ret;
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out_len = data_out ? len : 0;
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in_len = data_in ? len : 0;
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spi_slave_select(dev, CC2520_SPI_SLAVE());
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ret = spi_transceive(dev, data_out, out_len, data_in, in_len);
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return (ret == DEV_OK);
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}
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static inline bool cc2520_read_fifo_buf(uint8_t *buffer, uint32_t count)
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{
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uint8_t data[128 + 1] = { 0xff };
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bool ret;
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data[0] = CC2520_INS_RXBUF;
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ret = spi_transfer(CC2520_SPI(), data, data, count + 1);
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if (ret) {
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memcpy(buffer, data + 1, count);
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}
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return ret;
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}
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static inline bool cc2520_write_fifo_buf(uint8_t *buffer, int count)
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{
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uint8_t data[128 + 1];
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if (count > (sizeof(data) - 1)) {
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DBG("%s: too long data %d, max is %d\n", __func__,
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count, sizeof(data) - 1);
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return false;
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}
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data[0] = CC2520_INS_TXBUF;
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memcpy(&data[1], buffer, count);
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return spi_transfer(CC2520_SPI(), data, NULL, count + 1);
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}
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static inline bool cc2520_write_reg(uint16_t addr, uint16_t value)
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{
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uint8_t data[3];
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data[0] = (CC2520_INS_MEMWR | (addr >> 8)) & 0xff;
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data[1] = addr & 0xff;
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data[2] = value & 0xff;
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return spi_transfer(CC2520_SPI(), data, NULL, 3);
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}
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static inline bool cc2520_read_reg(uint16_t addr, uint16_t *value)
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{
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uint8_t data[3];
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bool ret;
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data[0] = (CC2520_INS_MEMRD | (addr >> 8)) & 0xff;
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data[1] = addr & 0xff;
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data[2] = 0;
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ret = spi_transfer(CC2520_SPI(), data, data, 3);
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*value = data[2];
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return ret;
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}
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static inline bool cc2520_write_ram(uint8_t *buffer, int addr, int count)
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{
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uint8_t data[128 + 1 + 1];
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if (count > (sizeof(data) - 2)) {
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DBG("%s: too long data %d, max is %d\n",
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__func__, count, sizeof(data) - 2);
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return false;
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}
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data[0] = (CC2520_INS_MEMWR | (addr >> 8)) & 0xff;
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data[1] = addr & 0xff;
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memcpy(&data[2], buffer, count);
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return spi_transfer(CC2520_SPI(), data, NULL, count + 2);
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}
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static inline bool cc2520_read_ram(uint8_t *buffer, int addr, uint32_t count)
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{
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uint8_t data[128 + 1 + 1] = { 0 };
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int ret;
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data[0] = (CC2520_INS_MEMRD | (addr >> 8)) & 0xff;
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data[1] = addr & 0xff;
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ret = spi_transfer(CC2520_SPI(), data, data, count + 2);
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memcpy(buffer, data + 2, count);
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return (!ret);
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}
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static inline bool cc2520_get_status(uint8_t *status)
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{
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uint8_t data = CC2520_INS_SNOP;
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return spi_transfer(CC2520_SPI(), &data, status, 1);
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}
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static inline bool cc2520_strobe(uint8_t strobe)
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{
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return spi_transfer(CC2520_SPI(), &strobe, NULL, 1);
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}
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static inline bool cc2520_strobe_plus_nop(uint8_t strobe)
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{
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uint8_t data[2];
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data[0] = strobe;
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data[1] = CC2520_INS_SNOP;
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return spi_transfer(CC2520_SPI(), data, NULL, 2);
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}
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static inline int cc2520_get_fifop(void)
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{
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uint32_t value;
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gpio_pin_read(CC2520_GPIO(FIFOP), CONFIG_CC2520_GPIO_FIFOP, &value);
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return value;
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}
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static inline int cc2520_get_fifo(void)
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{
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uint32_t value;
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gpio_pin_read(CC2520_GPIO(FIFO), CONFIG_CC2520_GPIO_FIFO, &value);
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return value;
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}
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static inline int cc2520_get_sfd(void)
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{
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uint32_t value;
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gpio_pin_read(CC2520_GPIO(SFD), CONFIG_CC2520_GPIO_SFD, &value);
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return value;
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}
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static inline int cc2520_get_cca(void)
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{
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uint32_t value;
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gpio_pin_read(CC2520_GPIO(CCA), CONFIG_CC2520_GPIO_CCA, &value);
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return value;
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}
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static inline void cc2520_set_vreg(int enable)
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{
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/* If VREG_EN is connected to VDD, then set the gpio pointer
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* to NULL and do not configure.
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*/
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if (!CC2520_GPIO(VREG)) {
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return;
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}
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gpio_pin_write(CC2520_GPIO(VREG), CONFIG_CC2520_GPIO_VREG, enable);
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}
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static inline void cc2520_set_reset(int enable)
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{
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gpio_pin_write(CC2520_GPIO(RESET), CONFIG_CC2520_GPIO_RESET, enable);
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}
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static inline void cc2520_enable_fifop_int(int enable)
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{
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DBG("%s FIFOP\n", enable ? "enable" : "disable");
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if (enable) {
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gpio_pin_enable_callback(CC2520_GPIO(FIFOP),
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CONFIG_CC2520_GPIO_FIFOP);
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} else {
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gpio_pin_disable_callback(CC2520_GPIO(FIFOP),
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CONFIG_CC2520_GPIO_FIFOP);
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}
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}
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static inline void cc2520_clear_fifop_int(void)
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{
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/* Do nothing */
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}
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static inline void cc2520_init_fifop_int(cc2520_gpio_int_handler_t handler)
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{
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gpio_set_callback(CC2520_GPIO(FIFOP), handler);
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}
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#endif /* __CC2520_ARCH_H__ */
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