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#include <stdint.h>
#include <stdlib.h>
#include "dataflow.h"
/**
* Args table for all states
*
* |-------+-------------------|
* | Index | Variable |
* |-------+-------------------|
* | 0 | SOR_buf |
* | 1 | DOC_buf |
* | 2 | data_rbuf |
* | 3 | data_routing_ptr |
* | 4 | data_src_idx_rbuf |
* | 5 | data_len_buf |
* | 6 | cmd_routing_buf |
* | 7 | cmd_routing_ptr |
* | 8 | cmd_src_idx_rbuf |
* | 9 | cmd_dst_idx_rbuf |
* |-------+-------------------|
*
*/
int DF_func_idle(p_stream_t stream, void **args)
{
int df_state = DF_IDLE;
uint8_t SOR_code = *(uint8_t*)args[0];
uint8_t SOR_buf[2] = {SOR_code, 0x0};
if (stream.write(SOR_buf, 2, NULL, &stream) != 0) {
df_state = DF_STATE_FAIL;
}
else {
switch (SOR_code) {
case SLAVE_TX:
df_state = DF_RX_DOC;
break;
case SLAVE_RX_DATAPOINT:
df_state = DF_TX_DATA;
break;
case SLAVE_RX_COMMAND:
df_state = DF_TX_CMD;
break;
default:
df_state = DF_STATE_FAIL;
break;
}
}
return df_state;
}
int DF_func_rx_doc(p_stream_t stream, void **args)
{
int df_state = DF_RX_DOC;
args[1] = malloc(sizeof(uint8_t)*4);
if (stream.read(args[1], 4, NULL, &stream) != 0) {
free(args[1]);
df_state = DF_STATE_FAIL;
}
else {
switch (((uint8_t*)args[1])[1]) {
case 0x0:
df_state = DF_SUCCESS;
break;
case DATA:
df_state = DF_TX_CTS;
break;
case CMD_UNICAST:
df_state = DF_TX_CTS;
break;
default:
df_state = DF_STATE_FAIL;
break;
}
}
return df_state;
}
int DF_func_tx_cts(p_stream_t stream, void **args)
{
int df_state = DF_TX_CTS;
uint8_t CTS_buf[2] = {0x2, 0xFF};
uint8_t *DOC_buf = args[1];
if (stream.write(CTS_buf, 2, NULL, &stream) != 0) {
df_state = DF_FAIL;
}
else {
switch (DOC_buf[1]) {
case DATA:
df_state = DF_RX_DATA;
break;
case CMD_UNICAST:
df_state = DF_RX_CMD;
break;
}
}
return df_state;
}
int DF_func_rx_data(p_stream_t stream, void **args)
{
int df_state = DF_RX_DATA;
uint8_t **data_rbuf = (uint8_t**)args[2];
uint8_t *data_routing_ptr = (uint8_t*)args[3];
uint8_t *DOC_buf = (uint8_t*)args[1];
uint8_t data_len = DOC_buf[3];
data_rbuf[*data_routing_ptr] = malloc(sizeof(uint8_t)*data_len);
if (stream.read(data_rbuf[*data_routing_ptr], data_len, NULL, &stream) != 0) {
df_state = DF_STATE_FAIL;
free(data_rbuf[*data_routing_ptr]);
}
else {
uint8_t* data_src_idx_rbuf = (uint8_t*)args[4];
uint8_t* data_len_buf = (uint8_t*)args[5];
data_src_idx_rbuf[*data_routing_ptr] = 0;
/* data_src_idx_rbuf[data_routing_ptr] = dev_idx; */
data_len_buf[*data_routing_ptr] = data_len;
data_routing_ptr++;
df_state = DF_STATE_SUCCESS;
}
return df_state;
}
int DF_func_rx_cmd(p_stream_t stream, void **args)
{
int df_state = DF_RX_CMD;
uint8_t *DOC_buf = args[1];
uint8_t data_len = DOC_buf[3], cmd_dest = DOC_buf[0];
uint8_t **cmd_routing_buf = (uint8_t**)args[6];
uint8_t *cmd_routing_ptr = (uint8_t*)args[7];
uint8_t* cmd_src_idx_rbuf = (uint8_t*)args[8];
uint8_t* cmd_dst_idx_rbuf = (uint8_t*)args[9];
cmd_routing_buf[*cmd_routing_ptr] = (uint8_t*)malloc(sizeof(uint8_t)*data_len);
if (stream.read(cmd_routing_buf[*cmd_routing_ptr], data_len, NULL, &stream) != 0) {
free(cmd_routing_buf[*cmd_routing_ptr]);
df_state = DF_STATE_FAIL;
}
else {
cmd_src_idx_rbuf[*cmd_routing_ptr] = 0;
cmd_dst_idx_rbuf[*cmd_routing_ptr] = cmd_dest;
cmd_routing_ptr++;
df_state = DF_STATE_SUCCESS;
}
return df_state;
}
int DF_func_tx_data(p_stream_t stream, void **args)
{
int df_state = DF_RX_DATA;
uint8_t **MDR_rbuf = (uint8_t**)args[10];
uint8_t *MDR_len_buf = (uint8_t*)args[12];
uint8_t *data_len_buf = (uint8_t*)args[5];
uint8_t rbuf_idx = *(uint8_t*)args[11];
uint8_t **data_rbuf = (uint8_t**)args[2];
uint8_t CTS_buf[2];
uint8_t data_MDR_len_buf[4] = {0, MDR_len_buf[rbuf_idx], 0, data_len_buf[rbuf_idx]};
if (stream.read(CTS_buf, 2, NULL, &stream) != 0)
df_state = DF_STATE_FAIL;
else if (CTS_buf[1] != 0x1)
df_state = DF_STATE_FAIL;
if (df_state != DF_STATE_FAIL) {
if (stream.write(data_MDR_len_buf, 4, NULL, &stream) != 0)
df_state = DF_STATE_FAIL;
else {
if (stream.read(CTS_buf, 2, NULL, &stream) != 0)
df_state = DF_STATE_FAIL;
else if (CTS_buf[1] != 0x1)
df_state = DF_STATE_FAIL;
}
}
if (df_state != DF_STATE_FAIL) {
if (stream.write(MDR_rbuf[rbuf_idx], MDR_len_buf[rbuf_idx], NULL, &stream) == 0 &&
stream.write(data_rbuf[rbuf_idx], data_len_buf[rbuf_idx], NULL, &stream) == 0)
df_state = DF_STATE_SUCCESS;
else
df_state = DF_STATE_FAIL;
}
return df_state;
}
int DF_func_tx_cmd(p_stream_t stream, void **args)
{
/* TODO This function will not work unless there is a cmd_len buffer */
uint8_t rbuf_idx = *(uint8_t*)args[11];
uint8_t **cmd_routing_buf = (uint8_t**)args[6];
return DF_STATE_FAIL;
}
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