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/**
*
* Author: Dylan Muller
* Copyright (c) 2025
* All rights reserved.
*
* - Commercial/IP use prohibited.
* - Attribution required.
* See License.txt
*
*/
#include "setup.h"
#include "peripheral/spi.h"
#include "driver/si4468.h"
#include "driver/radio_config.h"
#include "driver/device.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <avr/io.h>
#include <avr/interrupt.h>
#include <util/delay.h>
#include <util/atomic.h>
#include <avr/pgmspace.h>
static const uint8_t config[] PROGMEM = RADIO_CONFIGURATION_DATA_ARRAY;
void si4468_init(void)
{
SI4468_DEV_0_DDR |= (1 << SI4468_DEV_0_SS);
SI4468_DEV_0_PORT |= (1 << SI4468_DEV_0_SS);
}
void si44468_get_device(
int id,
t_dev* device
)
{
uint8_t dev_id = 0x0;
uint8_t dev_ss = 0x0;
uint8_t* dev_port = 0x0;
device->dev_id = 0;
device->dev_ss = 0;
device->dev_port = 0;
switch (id)
{
case SI4468_ID_RADIO:
dev_id = SI4468_DEV_RADIO;
break;
}
switch (dev_id)
{
case SI4468_DEV_RADIO:
dev_ss = SI4468_DEV_0_SS;
dev_port = (uint8_t*)&SI4468_DEV_0_PORT;
break;
}
device->dev_id = dev_id;
device->dev_ss = dev_ss;
device->dev_port = dev_port;
}
static uint8_t si4468_get_response(
void* buf,
uint8_t len
)
{
t_dev device;
uint8_t cts = 0x0;
uint8_t* cmd_buf = 0x0;
uint16_t cmd_size = 0x0;
uint8_t i = 0;
si44468_get_device(SI4468_ID_RADIO, &device);
cmd_size = len + SI4468_GET_RESP_LEN;
cmd_buf = (uint8_t*)malloc((cmd_size));
cmd_buf[0] = SI4468_CMD_READ_CMD_BUFF;
cmd_buf[1] = SI4468_CTS;
spi_start(cmd_buf, cmd_buf, SI4468_GET_RESP_LEN, device.dev_port, device.dev_ss);
spi_flush();
cts = (cmd_buf[0] == SI4468_CTS);
if(cts)
{
if (len > 0)
{
for(i = 0x0; i < cmd_size; i++)
{
cmd_buf[i] = SI4468_CTS;
}
cmd_buf[0] = SI4468_CMD_READ_CMD_BUFF;
spi_start(cmd_buf, cmd_buf, cmd_size, (uint8_t*)&SI4468_DEV_0_PORT, SI4468_DEV_0_SS);
spi_flush();
for(i = SI4468_GET_RESP_LEN; i < cmd_size; i++)
{
((uint8_t*)buf)[i - SI4468_GET_RESP_LEN] = cmd_buf[i];
}
}
}
free(cmd_buf);
return cts;
}
static uint8_t si4468_wait_for_response(
void* buf,
uint8_t buf_len
)
{
while(!si4468_get_response(buf, buf_len))
{
_delay_ms(10);
}
return 1;
}
static void si4468_exec_api(
void* in,
size_t in_len,
void* out,
uint8_t out_len
)
{
t_dev device;
si44468_get_device(SI4468_ID_RADIO, &device);
if (si4468_wait_for_response(0, 0))
{
spi_start(in, 0, in_len, device.dev_port, device.dev_ss);
spi_flush();
if (out != 0)
{
si4468_wait_for_response(out, out_len);
}
}
}
void si4468_apply_startup_config(void)
{
uint16_t i = 0;
uint8_t buf[100];
for(i = 0; i < sizeof(config); i++)
{
memcpy_P(buf, &config[i], sizeof(buf));
uint8_t tmp = buf[0];
si4468_exec_api(&buf[1], tmp, 0, 0);
i += tmp;
}
}
void si4468_get_info(
si4468_info_t* info
)
{
uint8_t data[8] = {
SI4468_CMD_PART_INFO
};
si4468_exec_api(data, 1, data, 8);
info->chipRev = data[0];
info->part = (data[1]<<8) | data[2];
info->partBuild = data[3];
info->id = (data[4]<<8) | data[5];
info->customer = data[6];
info->romId = data[7];
}
void si4468_tx_mode(void)
{
uint8_t packet[] = {SI4468_CMD_START_TX, 0,0,0, 0,0,0 };
si4468_exec_api(packet, sizeof(packet), 0, 0);
}
void si4468_rx_mode(void)
{
uint8_t packet[] = {SI4468_CMD_CHANGE_STATE, 0x3};
si4468_exec_api(packet, sizeof(packet), 0, 0);
}
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