285 lines
8.7 KiB
C
285 lines
8.7 KiB
C
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/****************************************************************************
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Copyright(c) 2019 by Aerospace C.Power (Chongqing) Microelectronics. ALL RIGHTS RESERVED.
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This Information is proprietary to Aerospace C.Power (Chongqing) Microelectronics and MAY NOT
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be copied by any method or incorporated into another program without
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the express written consent of Aerospace C.Power. This Information or any portion
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thereof remains the property of Aerospace C.Power. The Information contained herein
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is believed to be accurate and Aerospace C.Power assumes no responsibility or
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liability for its use in any way and conveys no license or title under
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any patent or copyright and makes no representation or warranty that this
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Information is free from patent or copyright infringement.
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****************************************************************************/
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#include "iot_uart_h.h"
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#include "dtest_fpga_communication.h"
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#include "iot_gptmr_api.h"
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#include "uart.h"
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#include "uart_e.h"
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extern struct uart_ctrl uart_e_ctrl;
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#define dtest_uart_rxc() (uart_e_ctrl.rx_fifo_cnt(UART_PT1))
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#define dtest_uart_txc() (UART_TX_FIFO_LEN - uart_e_ctrl.tx_fifo_cnt(UART_PT1))
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#define dtest_uart_putc(x) (uart_e_ctrl.putc(UART_PT1, x))
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#define dtest_uart_getc() (uart_e_ctrl.getc(UART_PT1))
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#define DTEST_UART_MAX_BUFFER 1024
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static char g_dtest_rbuf[DTEST_UART_MAX_BUFFER];
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static char g_dtest_tbuf[DTEST_UART_MAX_BUFFER];
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#define DTEST_UART_TRX_TIMEOUT 10000 /* 10 Seconds. */
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static const unsigned short CRC16_Table[256]= {
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0x0000,0x1021,0x2042,0x3063,0x4084,0x50a5,0x60c6,0x70e7,
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0x8108,0x9129,0xa14a,0xb16b,0xc18c,0xd1ad,0xe1ce,0xf1ef,
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0x1231,0x0210,0x3273,0x2252,0x52b5,0x4294,0x72f7,0x62d6,
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0x9339,0x8318,0xb37b,0xa35a,0xd3bd,0xc39c,0xf3ff,0xe3de,
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0x2462,0x3443,0x0420,0x1401,0x64e6,0x74c7,0x44a4,0x5485,
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0xa56a,0xb54b,0x8528,0x9509,0xe5ee,0xf5cf,0xc5ac,0xd58d,
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0x3653,0x2672,0x1611,0x0630,0x76d7,0x66f6,0x5695,0x46b4,
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0xb75b,0xa77a,0x9719,0x8738,0xf7df,0xe7fe,0xd79d,0xc7bc,
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0x48c4,0x58e5,0x6886,0x78a7,0x0840,0x1861,0x2802,0x3823,
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0xc9cc,0xd9ed,0xe98e,0xf9af,0x8948,0x9969,0xa90a,0xb92b,
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0x5af5,0x4ad4,0x7ab7,0x6a96,0x1a71,0x0a50,0x3a33,0x2a12,
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0xdbfd,0xcbdc,0xfbbf,0xeb9e,0x9b79,0x8b58,0xbb3b,0xab1a,
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0x6ca6,0x7c87,0x4ce4,0x5cc5,0x2c22,0x3c03,0x0c60,0x1c41,
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0xedae,0xfd8f,0xcdec,0xddcd,0xad2a,0xbd0b,0x8d68,0x9d49,
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0x7e97,0x6eb6,0x5ed5,0x4ef4,0x3e13,0x2e32,0x1e51,0x0e70,
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0xff9f,0xefbe,0xdfdd,0xcffc,0xbf1b,0xaf3a,0x9f59,0x8f78,
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0x9188,0x81a9,0xb1ca,0xa1eb,0xd10c,0xc12d,0xf14e,0xe16f,
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0x1080,0x00a1,0x30c2,0x20e3,0x5004,0x4025,0x7046,0x6067,
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0x83b9,0x9398,0xa3fb,0xb3da,0xc33d,0xd31c,0xe37f,0xf35e,
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0x02b1,0x1290,0x22f3,0x32d2,0x4235,0x5214,0x6277,0x7256,
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0xb5ea,0xa5cb,0x95a8,0x8589,0xf56e,0xe54f,0xd52c,0xc50d,
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0x34e2,0x24c3,0x14a0,0x0481,0x7466,0x6447,0x5424,0x4405,
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0xa7db,0xb7fa,0x8799,0x97b8,0xe75f,0xf77e,0xc71d,0xd73c,
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0x26d3,0x36f2,0x0691,0x16b0,0x6657,0x7676,0x4615,0x5634,
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0xd94c,0xc96d,0xf90e,0xe92f,0x99c8,0x89e9,0xb98a,0xa9ab,
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0x5844,0x4865,0x7806,0x6827,0x18c0,0x08e1,0x3882,0x28a3,
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0xcb7d,0xdb5c,0xeb3f,0xfb1e,0x8bf9,0x9bd8,0xabbb,0xbb9a,
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0x4a75,0x5a54,0x6a37,0x7a16,0x0af1,0x1ad0,0x2ab3,0x3a92,
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0xfd2e,0xed0f,0xdd6c,0xcd4d,0xbdaa,0xad8b,0x9de8,0x8dc9,
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0x7c26,0x6c07,0x5c64,0x4c45,0x3ca2,0x2c83,0x1ce0,0x0cc1,
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0xef1f,0xff3e,0xcf5d,0xdf7c,0xaf9b,0xbfba,0x8fd9,0x9ff8,
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0x6e17,0x7e36,0x4e55,0x5e74,0x2e93,0x3eb2,0x0ed1,0x1ef0
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};
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static unsigned short CRC16(const char *buf, int len)
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{
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register int counter;
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register unsigned short crc = 0;
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for( counter = 0; counter < len; counter++)
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crc = (crc<<8) ^ CRC16_Table[((crc>>8) ^ *(char *)buf++)&0x00FF];
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return crc;
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}
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static uint16_t dtest_cmcn_calc_crc16(dtest_cmd_header_t *dpntr)
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{
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uint16_t res = 0;
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uint32_t len = dpntr->data_length + sizeof(uint16_t);
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res = CRC16((char*)&dpntr->data_length, len);
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return res;
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}
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uint32_t dtest_cmcn_tm_calc_delta (uint32_t old_t, uint32_t new_t)
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{
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return new_t >= old_t ? (new_t - old_t) : ((uint32_t)(-1) - old_t + new_t);
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}
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static uint32_t dtest_cmcn_timeout_start()
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{
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return iot_gp_timer_get_curr_ts();
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}
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static int dtest_cmcn_timeout_check(uint32_t old_t)
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{
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uint32_t new_t = iot_gp_timer_get_curr_ts();
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if (DTEST_UART_TRX_TIMEOUT*1000 <= dtest_cmcn_tm_calc_delta (old_t, new_t)) {
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return 1;
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} else {
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return 0;
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}
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}
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static int dtest_cmcn_make_frame(void *dpntr, int len)
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{
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dtest_cmd_header_t *pntr_hd = (dtest_cmd_header_t *)g_dtest_tbuf;
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dtest_cmd_tail_t *pntr_tl = (dtest_cmd_tail_t *)(pntr_hd->data + pntr_hd->data_length);
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pntr_hd ->pre_code = 0xAAAA;
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os_mem_cpy(pntr_hd->data, dpntr, len);
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pntr_hd->data_length = len;
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pntr_tl = (dtest_cmd_tail_t *)(pntr_hd->data + pntr_hd->data_length);
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pntr_tl->crc16 = dtest_cmcn_calc_crc16(pntr_hd);
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pntr_tl->pst_code = 0xFF;
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return sizeof(*pntr_hd) + sizeof(*pntr_tl) + pntr_hd->data_length;
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}
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static int dtest_cmcn_parse_frame(void *dpntr, int len)
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{
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int rcvLen = 0, rcvFrmlen = 0, frmLen = -1;
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char *pntr_frm = g_dtest_rbuf;
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uint8_t rcvDone = 0;
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dtest_cmd_header_t *pntr_hd = (dtest_cmd_header_t *)g_dtest_rbuf;
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dtest_cmd_tail_t *pntr_tl = NULL;
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uint32_t index = 0;
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uint32_t tm_old = 0;
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/* Clear the rcv frame buffer. */
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os_mem_set(g_dtest_rbuf, 0, DTEST_UART_MAX_BUFFER);
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tm_old = dtest_cmcn_timeout_start();
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/* Receive from UART & parse the frame. */
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do
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{
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/* 1. Read data from UART */
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/* 2. Search AAAA & get dataLength. */
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/* 3. Wait whole frame is complate. */
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/* 4. CRC check. */
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if(dtest_uart_rxc() > 0)
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{
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*pntr_frm = dtest_uart_getc();
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pntr_frm++;
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rcvLen++;
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rcvFrmlen++;
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}
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/* Receive data over buffer size. */
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if (rcvLen > DTEST_UART_MAX_BUFFER) {
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break;
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}
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/* Update the head position to search pre_code AAAA. */
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pntr_hd = (dtest_cmd_header_t *)(g_dtest_rbuf + index);
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/* If rcv frame length over the cmd head size, start to search pre_code. */
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if (rcvFrmlen >= sizeof(dtest_cmd_header_t)) {
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if (pntr_hd->pre_code == 0xAAAA) {
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frmLen = sizeof(dtest_cmd_header_t) + sizeof(dtest_cmd_tail_t) +
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pntr_hd->data_length;
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pntr_tl = (dtest_cmd_tail_t *)((uint8_t *)pntr_hd +
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sizeof(dtest_cmd_header_t) + pntr_hd->data_length);
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} else {
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/* If not find the pre_code, shift head position one btye to right, */
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/* and the rcv frame length minus one. */
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index++;
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rcvFrmlen--;
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}
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}
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/* The whole length received complete. */
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if (rcvFrmlen == frmLen) {
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if (pntr_tl->crc16 == dtest_cmcn_calc_crc16(pntr_hd) &&
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pntr_tl->pst_code == 0xFF) {
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if (len >= pntr_hd->data_length) {
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os_mem_cpy(dpntr, pntr_hd->data, pntr_hd->data_length);
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rcvLen = pntr_hd->data_length;
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rcvDone = 1;
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}
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break;
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} else {
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/* CRC or post code wrong. */
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break;
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}
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}
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if (dtest_cmcn_timeout_check(tm_old)) {
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break;
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}
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} while (rcvDone == 0);
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if (rcvDone == 0) {
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rcvLen = 0;
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}
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return rcvLen;
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}
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int dtest_cmcn_send(void *dpntr, int len)
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{
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int frmLen, sentLen = 0, timeout = 0;
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char *pntr_frm = g_dtest_tbuf;
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uint8_t retry = 0;
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uint32_t tm_old = 0;
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frmLen = dtest_cmcn_make_frame(dpntr, len);
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tm_old = dtest_cmcn_timeout_start();
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while(sentLen < frmLen)
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{
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if(dtest_uart_txc() > 0)
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{
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dtest_uart_putc(*pntr_frm);
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pntr_frm++;
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sentLen++;
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}
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if(dtest_cmcn_timeout_check(tm_old))
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{
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sentLen = 0;
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pntr_frm = g_dtest_tbuf;
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tm_old = dtest_cmcn_timeout_start();
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retry++;
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if (retry >= 3) {
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timeout = 1;
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break;
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}
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continue;
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}
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}
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if(timeout)
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{
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/* TODO */
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sentLen = 0;
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return sentLen;
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}
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if(sentLen == frmLen)
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{
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sentLen -= sizeof(dtest_cmd_header_t) + sizeof(dtest_cmd_tail_t);
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}
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else
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{
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sentLen = 0;
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}
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return sentLen;
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}
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int dtest_cmcn_receive(void *dpntr, int len)
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{
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int dataLen = 0;
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dataLen = dtest_cmcn_parse_frame(dpntr, len);
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return dataLen;
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}
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int dtest_cmcn_init(uint8_t rx_pin, uint8_t tx_pin)
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{
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/* Init UART port. */
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uart_e_ctrl.init(UART_PT1);
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/* Bind the uart signal into tx and rx pin. */
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iot_uart_set_pin(UART_PT1, rx_pin, tx_pin);
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return 0;
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}
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