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OpenRTX/platform/drivers/baseband/SA8x8.c

324 wiersze
8.6 KiB
C
Czysty Wina Historia

/***************************************************************************
* Copyright (C) 2023 by Silvano Seva IU2KWO *
* and Niccolò Izzo IU2KIN *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 3 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, see <http://www.gnu.org/licenses/> *
***************************************************************************/
#include <zephyr/drivers/gpio.h>
#include <zephyr/drivers/uart.h>
#include <zephyr/kernel.h>
#include <interfaces/delays.h>
#include <string.h>
#include <stdio.h>
#include "SA8x8.h"
/*
* Minimum required version of sa868-fw
*/
#define SA868FW_MAJOR 1
#define SA868FW_MINOR 3
#define SA868FW_PATCH 0
#if DT_NODE_HAS_STATUS(DT_ALIAS(radio), okay)
#define UART_RADIO_DEV_NODE DT_ALIAS(radio)
#else
#error "Please select the correct radio UART device"
#endif
#define RADIO_PDN_NODE DT_ALIAS(radio_pdn)
#define RADIO_PWR_NODE DT_NODELABEL(radio_pwr)
#define SA8X8_MSG_SIZE 32U
static const struct device *const uart_dev = DEVICE_DT_GET(UART_RADIO_DEV_NODE);
static const struct gpio_dt_spec radio_pdn = GPIO_DT_SPEC_GET(RADIO_PDN_NODE, gpios);
static const struct gpio_dt_spec radio_pwr = GPIO_DT_SPEC_GET_OR(RADIO_PWR_NODE, gpios, {0});
K_MSGQ_DEFINE(uart_msgq, SA8X8_MSG_SIZE, 10, 4);
static uint16_t rx_buf_pos;
static char rx_buf[SA8X8_MSG_SIZE];
static void uartRxCallback(const struct device *dev, void *user_data)
{
uint8_t c;
if (uart_irq_update(uart_dev) == false)
return;
if (uart_irq_rx_ready(uart_dev) == false)
return;
// read until FIFO empty
while (uart_fifo_read(uart_dev, &c, 1) == 1)
{
if ((c == '\n') && (rx_buf_pos > 0))
{
rx_buf[rx_buf_pos] = '\0';
// if queue is full, message is silently dropped
k_msgq_put(&uart_msgq, &rx_buf, K_NO_WAIT);
rx_buf_pos = 0;
}
else if (rx_buf_pos < (sizeof(rx_buf) - 1))
{
rx_buf[rx_buf_pos++] = c;
}
}
}
static void uartPrint(const char *fmt, ...)
{
char buf[SA8X8_MSG_SIZE];
va_list args;
va_start(args, fmt);
int len = vsnprintk(buf, SA8X8_MSG_SIZE, fmt, args);
va_end(args);
for(int i = 0; i < len; i++)
uart_poll_out(uart_dev, buf[i]);
}
static inline void waitUntilReady()
{
char buf[SA8X8_MSG_SIZE] = { 0 };
while(true)
{
uartPrint("AT\r\n");
int ret = k_msgq_get(&uart_msgq, buf, K_MSEC(250));
if(ret != 0)
printk("SA8x8: baseband is not ready!\n");
if(strncmp(buf, "OK\r", SA8X8_MSG_SIZE) == 0)
break;
}
}
static inline bool checkFwVersion()
{
uint8_t major;
uint8_t minor;
uint8_t patch;
uint8_t revision;
const char *fwVersionStr = sa8x8_getFwVersion();
sscanf(fwVersionStr, "sa8x8-fw/v%hhu.%hhu.%hhu.r%hhu", &major, &minor,
&patch, &revision);
if((major > SA868FW_MAJOR) ||
((major == SA868FW_MAJOR) && (minor > SA868FW_MINOR)) ||
((major == SA868FW_MAJOR) && (minor == SA868FW_MINOR) && (patch > SA868FW_PATCH)) ||
((major == SA868FW_MAJOR) && (minor == SA868FW_MINOR) && (patch == SA868FW_PATCH)))
{
return true;
}
// Major, minor, or patch not matching.
printk("SA8x8: error, unsupported baseband firmware, please update!\n");
return false;
}
int sa8x8_init()
{
// Initialize GPIO for SA868S power down
if(gpio_is_ready_dt(&radio_pdn) == false)
{
printk("SA8x8: error, radio device %s is not ready\n", radio_pdn.port->name);
return -1;
}
int ret = gpio_pin_configure_dt(&radio_pdn, GPIO_OUTPUT);
if (ret != 0)
{
printk("SA8x8: error %d, failed to configure %s pin %d\n", ret,
radio_pdn.port->name, radio_pdn.pin);
return ret;
}
// Initialize GPIO for SA868S high power mode
if(gpio_is_ready_dt(&radio_pwr) == false)
{
printk("SA8x8: error, high power GPIO %s is not ready\n", radio_pdn.port->name);
return ret;
}
ret = gpio_pin_configure_dt(&radio_pwr, GPIO_OUTPUT);
if (ret != 0)
{
printk("SA8x8: error %d, failed to configure %s pin %d\n", ret,
radio_pwr.port->name, radio_pwr.pin);
return ret;
}
// Reset the SA868S baseband
gpio_pin_set_dt(&radio_pdn, 1);
delayMs(100);
gpio_pin_set_dt(&radio_pdn, 0);
// Setup UART for communication
if (device_is_ready(uart_dev) == false)
{
printk("SA8x8: error, UART device not found!\n");
return -1;
}
ret = uart_irq_callback_user_data_set(uart_dev, uartRxCallback, NULL);
if (ret < 0)
{
switch(ret)
{
case -ENOTSUP:
printk("SA8x8: error, interrupt-driven UART support not enabled\n");
break;
case -ENOSYS:
printk("SA8x8: error, UART device does not support interrupt-driven API\n");
break;
default:
printk("SA8x8: error, cannot set UART callback: %d\n", ret);
break;
}
return ret;
}
uart_irq_rx_enable(uart_dev);
waitUntilReady();
bool ok = checkFwVersion();
if(ok)
return 0;
return -1;
}
const char *sa8x8_getModel()
{
static char model[SA8X8_MSG_SIZE] = { 0 };
if(model[0] == 0)
{
uartPrint("AT+MODEL\r\n");
int ret = k_msgq_get(&uart_msgq, model, K_MSEC(100));
if(ret != 0)
printk("SA8x8: error while reading radio model\n");
}
return model;
}
const char *sa8x8_getFwVersion()
{
static char fw_version[SA8X8_MSG_SIZE] = { 0 };
if(fw_version[0] == 0)
{
uartPrint("AT+VERSION\r\n");
int ret = k_msgq_get(&uart_msgq, fw_version, K_MSEC(100));
if(ret != 0)
printk("SA8x8: error while reading FW version\n");
}
return fw_version;
}
int sa8x8_enableHSMode()
{
char buf[SA8X8_MSG_SIZE] = { 0 };
struct uart_config uart_config;
int ret = uart_config_get(uart_dev, &uart_config);
if(ret != 0)
{
printk("SA8x8: error while retrieving UART configuration!\n");
return ret;
}
uartPrint("AT+TURBO\r\n");
ret = k_msgq_get(&uart_msgq, buf, K_MSEC(100));
if(ret != 0)
{
printk("SA8x8: error while retrieving turbo response!\n");
return ret;
}
uart_config.baudrate = 115200;
ret = uart_configure(uart_dev, &uart_config);
if(ret != 0)
{
printk("c error while setting UART configuration!\n");
return ret;
}
return 0;
}
void sa8x8_setTxPower(const uint32_t power)
{
char buf[SA8X8_MSG_SIZE] = { 0 };
// TODO: Implement fine-grained power control through PA_BIAS SA8x8 register
uint8_t amp_enable = (power > 1000) ? 1 : 0;
int ret = gpio_pin_set_dt(&radio_pwr, amp_enable);
if(ret != 0)
printk("SA8x8: failed to change power mode");
}
void sa8x8_setAudio(bool value)
{
char buf[SA8X8_MSG_SIZE];
uartPrint("AT+AUDIO=%d\r\n", value);
k_msgq_get(&uart_msgq, buf, K_MSEC(100));
// Check that response is "OK\r"
if(strncmp(buf, "OK\r", 3U) != 0)
printk("SA8x8: failed to enable control speaker power amplifier");
}
void sa8x8_writeAT1846Sreg(uint8_t reg, uint16_t value)
{
char buf[SA8X8_MSG_SIZE];
uartPrint("AT+POKE=%d,%d\r\n", reg, value);
k_msgq_get(&uart_msgq, buf, K_MSEC(100));
// Check that response is "OK\r"
if(strncmp(buf, "OK\r", 3U) != 0)
printk("SA8x8 Error: %d <- %d\n", reg, value);
}
uint16_t sa8x8_readAT1846Sreg(uint8_t reg)
{
char buf[SA8X8_MSG_SIZE];
uint16_t value = 0;
uartPrint("AT+PEEK=%d\r\n", reg);
k_msgq_get(&uart_msgq, buf, K_MSEC(100));
int ret = sscanf(buf, "%hd\r", &value);
if(ret != 1)
printk("SA8x8 Error: %d ->\n", reg);
return value;
}
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