- #ifdef USE_SERIAL
- #ifdef SERIAL_USE_MULTI_TRANSACTION
- /* --- USE flexible API (using multi-type transaction function) --- */
-
- #include <stdbool.h>
- #include <stdint.h>
- #include <stddef.h>
- #include <split_scomm.h>
- #include "serial.h"
- #ifdef CONSOLE_ENABLE
- #include "debug.h"
- #endif
-
- uint8_t volatile serial_slave_buffer[SERIAL_SLAVE_BUFFER_LENGTH] = {0};
- uint8_t volatile serial_master_buffer[SERIAL_MASTER_BUFFER_LENGTH] = {0};
- uint8_t volatile status_com = 0;
- uint8_t volatile status1 = 0;
- uint8_t slave_buffer_change_count = 0;
- uint8_t s_change_old = 0xff;
- uint8_t s_change_new = 0xff;
-
- SSTD_t transactions[] = {
- #define GET_SLAVE_STATUS 0
- /* master buffer not changed, only recive slave_buffer_change_count */
- { (uint8_t *)&status_com,
- 0, NULL,
- sizeof(slave_buffer_change_count), &slave_buffer_change_count,
- },
- #define PUT_MASTER_GET_SLAVE_STATUS 1
- /* master buffer changed need send, and recive slave_buffer_change_count */
- { (uint8_t *)&status_com,
- sizeof(serial_master_buffer), (uint8_t *)serial_master_buffer,
- sizeof(slave_buffer_change_count), &slave_buffer_change_count,
- },
- #define GET_SLAVE_BUFFER 2
- /* recive serial_slave_buffer */
- { (uint8_t *)&status1,
- 0, NULL,
- sizeof(serial_slave_buffer), (uint8_t *)serial_slave_buffer
- }
- };
-
- void serial_master_init(void)
- {
- soft_serial_initiator_init(transactions, TID_LIMIT(transactions));
- }
-
- void serial_slave_init(void)
- {
- soft_serial_target_init(transactions, TID_LIMIT(transactions));
- }
-
- // 0 => no error
- // 1 => slave did not respond
- // 2 => checksum error
- int serial_update_buffers(int master_update)
- {
- int status, smatstatus;
- static int need_retry = 0;
-
- if( s_change_old != s_change_new ) {
- smatstatus = soft_serial_transaction(GET_SLAVE_BUFFER);
- if( smatstatus == TRANSACTION_END ) {
- s_change_old = s_change_new;
- #ifdef CONSOLE_ENABLE
- if (debug_matrix) {
- uprintf("slave matrix = %b %b %b %b\n",
- serial_slave_buffer[0], serial_slave_buffer[1],
- serial_slave_buffer[2], serial_slave_buffer[3]);
- }
- #endif
- }
- } else {
- // serial_slave_buffer dosen't change
- smatstatus = TRANSACTION_END; // dummy status
- }
-
- if( !master_update && !need_retry) {
- status = soft_serial_transaction(GET_SLAVE_STATUS);
- } else {
- status = soft_serial_transaction(PUT_MASTER_GET_SLAVE_STATUS);
- }
- if( status == TRANSACTION_END ) {
- s_change_new = slave_buffer_change_count;
- need_retry = 0;
- } else {
- need_retry = 1;
- }
- return smatstatus;
- }
-
- #endif // SERIAL_USE_MULTI_TRANSACTION
- #endif /* USE_SERIAL */
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