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器件型号：TMS320F2800157 主题中讨论的其他器件：TLIN2029EVM、 TMDSHSECDOCK、 SysConfig
我们正在测试 LIN 从设备驱动程序、 当我们从独木舟传输数据时、无法在 F280015x 控制卡上获取 RX 中断。
请查看下面的图片( F280015x_ Control_Card_Switch_Configuration )包含控制卡及开关位置，
- S2：一个开关被按下。
- S1：A 位置2开关被按下。
请查找有关硬件连接的详细信息：
我们使用 LIN 收发器(TLIN2029EVM)在具有 C2000 F280015x 控制卡的 TMDSHSECDOCK 控制卡集线站[修订版 F]与 LIN 主站(我们将 Canoe 接口用于 LIN 主站)之间建立通信。
我们已将 LIN 收发器 RX 引脚连接至 TMDSHSECDOCK 控制卡集线站[Rev F] RX 引脚、即集线站上的引脚编号90 (GPIO35)和 Tx 引脚编号85 (GPIO32)以及 LIN 收发器 EN 引脚编号88 (GPIO37)。
请查看以下 LIN 初始化 API 伪代码说明、以便在从模式下配置 LIN。
void LINDrv_Init(void)
{
/* Initialize LIN state to IDLE. */
g_LIN_State = LIN_STATE_IDLE;
/* Enable LIN peripheral Module Clock */
SysCtl_enablePeripheral(SYSCTL_PERIPH_CLK_LINA);
EALLOW;
/* Set the Interrupt Handler */
Interrupt_register(INT_LINA_0, &LINDrv_IntLevel0Handle);
/* LIN Tx GPIO Configuration */
GPIO_setPinConfig(GPIO_32_LINA_TX);
/* Set the direction */
GPIO_setDirectionMode(LIN_TX_GPIO_PIN,GPIO_DIR_MODE_OUT);
/* Configure the Pin as PushPull */
GPIO_setPadConfig(LIN_TX_GPIO_PIN,GPIO_PIN_TYPE_STD);
/* LIN Rx GPIO Configuration */
GPIO_setPinConfig(GPIO_35_LINA_RX);
/* Set the direction */
GPIO_setDirectionMode(LIN_RX_GPIO_PIN,GPIO_DIR_MODE_IN);
/* Configure the Pin as PushPull */
GPIO_setPadConfig(LIN_RX_GPIO_PIN,GPIO_PIN_TYPE_STD);
/* Reset the Module */
LIN_REG_SCIGCR0 |= LIN_SCIGCR0_RESET;
/* Reset the Software Reset Bit */
LIN_REG_SCIGCR1 &= ~(LIN_SCIGCR1_SWNRST);
/* Configure the LINRx and LINTx Pin */
LIN_REG_SCIPIO0 |= (LIN_SCIPIO0_RXFUNC | LIN_SCIPIO0_TXFUNC);
/* Select LIN Mode */
LIN_REG_SCIGCR1 |= LIN_SCIGCR1_LINMODE;
/* Configure the LIN Module in Slave mode */
LIN_REG_SCIGCR1 |= (LIN_REG_SCIGCR1 & ~(LIN_SCIGCR1_CLK_MASTER));
/* Disable the ID4/ID5 bits for length control*/
LIN_REG_SCIGCR1 |= (LIN_REG_SCIGCR1 & ~(LIN_SCIGCR1_TIMINGMODE | LIN_SCIGCR1_COMMMODE));
/* Debug mode */
LIN_REG_SCIGCR1 |= (LIN_REG_SCIGCR1 & (~(LIN_SCIGCR1_CONT)));
/* Configure the Parity */
LIN_REG_SCIGCR1 |= LIN_SCIGCR1_PARITYENA;
/* Configure the max Response Length */
LIN_REG_SCIFORMAT |= ((((uint32_t)MAXLENGTH - (uint32_t)LIN_CONST_NO_ONE) << \
LIN_SCIFORMAT_LENGTH_S));
/* Checksum Type Selection */
#if(LIN_CHECKSUM_TYPE == LIN_ENHANCEMENT_CHECKSUM_TYPE)
{
/* Configure the Enhancement type checksum */
LIN_REG_SCIGCR1 |= LIN_SCIGCR1_CTYPE;
}
#else
{
/* Configure the Classic type checksum */
LIN_REG_SCIGCR1 |= (LIN_REG_SCIGCR1 & (~(LIN_SCIGCR1_CTYPE)));
}
#endif
/* Trigger Checksum Compare */
LIN_REG_SCIGCR2 |= LIN_SCIGCR2_CC;
/* Send CheckSum */
LIN_REG_SCIGCR2 |= LIN_SCIGCR2_SC;
/* Disable Auto BaudRate */
LIN_REG_SCIGCR1 |= (LIN_REG_SCIGCR1 & (~LIN_SCIGCR1_ADAPT));
/* Select Multi-buffer */
LIN_REG_SCIGCR1 |= LIN_SCIGCR1_MBUFMODE;
/* Disable LOOP-BACK Mode */
LIN_REG_SCIGCR1 |= (LIN_REG_SCIGCR1 &~(LIN_SCIGCR1_LOOPBACK));
/* Disable External Loop back mode */
LIN_REG_IODFTCTRL &= ~(LIN_IODFTCTRL_IODFTENA_M |LIN_IODFTCTRL_LPBENA |
LIN_IODFTCTRL_RXPENA);
/* Synch break and synch delimiter additional bits */
LIN_REG_COMP |= (LIN_SYNCH_BREAK_LEN | ((LIN_SYNCH_DELIMITER_LEN - 1U) << LIN_COMP_SDEL_S));
/* Configure the BaudRate */
LINDrv_SetBuadRate();
/* Configure message filtering */
#if(LIN_HGENCTRL_TYPE == LIN_CONST_NO_ONE)
{
/* Configure the Slave ID for message filtering */
LIN_REG_SCIGCR1 |= LIN_SCIGCR1_HGENCTRL;
/* Configure the Filter Compare Slave task ID byte*/
LIN_REG_ID |= (uint32_t)LIN_SLAVETASKIDBYTE << LIN_CONST_NO_EIGHT;
/* Configure the Rx Filter Mask */
LIN_REG_MASK |= ((uint32_t)LIN_RXMESSAGEID_FILTERMASK << LIN_CONST_NO_SIXTEEN);
/* Configure the Tx Filter Mask */
LIN_REG_MASK |= (uint32_t)LIN_TXMESSAGEID_FILTERMASK;
}
#else
{
/* Configure the ID for message filtering */
LIN_REG_SCIGCR1 |= (LIN_REG_SCIGCR1 & (~(LIN_SCIGCR1_HGENCTRL)));
/* Configure the Filter Compare ID byte*/
LIN_REG_ID |= (uint32_t)LIN_SLAVETASKIDBYTE;
/* Configure the Rx Filter Mask */
LIN_REG_MASK |= ((uint32_t)LIN_RXMSGID_FILTERMSK_ZERO << LIN_CONST_NO_SIXTEEN);
/* Configure the Tx Filter Mask */
LIN_REG_MASK |= (uint32_t)LIN_TXMSGID_FILTERMSK_ZERO;
}
#endif
/* Enable the Transmit */
LIN_REG_SCIGCR1 |= LIN_SCIGCR1_TXENA;
/* Enable the Receive */
LIN_REG_SCIGCR1 |= LIN_SCIGCR1_RXENA;
/* Reset the Software Reset Bit */
LIN_REG_SCIGCR1 |= (LIN_SCIGCR1_SWNRST);
EDIS;
/* Enable Interrupt - Bit Error Interrupt, Physical Bus Error interrupt,
* Checksum Error Interrupt, Sync Frame Error Interrupt,
* No Response Error Interrupt, Frame Error Interrupt,
* Over run Interrupt, Parity Error Interrupt,
ID Interrupt ,Timeout after Wake-up Signal Interrupt,
Timeout after Three Wake-up Signal Interrupt */
LIN_REG_SCISETINT = ( LIN_SCISETINT_SETBEINT | LIN_SCISETINT_SETPBEINT | \
LIN_SCISETINT_SETCEINT | LIN_SCISETINT_SETISFEINT | \
LIN_SCISETINT_SETNREINT | LIN_SCISETINT_SETFEINT | \
LIN_SCISETINT_SETOEINT | LIN_SCISETINT_SETPEINT | \
LIN_SCISETINT_SETIDINT | LIN_SCISETINT_SETTIMEOUTINT |
LIN_SCISETINT_SETTOA3WUSINT | LIN_SCISETINT_SETTOAWUSINT);
/* Set Interrupt Level 0 */
LIN_REG_SCICLEARINTLVL = ( LIN_SCISETINT_SETBEINT | LIN_SCISETINT_SETPBEINT | \
LIN_SCISETINT_SETCEINT | LIN_SCISETINT_SETISFEINT | \
LIN_SCISETINT_SETNREINT | LIN_SCISETINT_SETFEINT | \
LIN_SCISETINT_SETOEINT | LIN_SCISETINT_SETPEINT | \
LIN_SCISETINT_SETIDINT | LIN_SCISETINT_SETTIMEOUTINT |
LIN_SCISETINT_SETTOA3WUSINT | LIN_SCISETINT_SETTOAWUSINT);
/* Enable Global Interrupt */
LIN_REG_GLB_INT_EN |= LIN_GLB_INT_EN_GLBINT0_EN << LIN_LINE0_INTERRUPT;
/* Clear the Global Interrupt Status */
LIN_REG_GLB_INT_FLG |= LIN_GLB_INT_CLR_INT0_FLG_CLR << LIN_LINE0_INTERRUPT;
/* Enable Interrupts */
Interrupt_enable(INT_LINA_0);
/* No Error */
g_LIN_ErrVal = LIN_NOERR;
}
如果需要更改扩展坞或控制卡上的任何配置引脚、请告知我们。
提前感谢。
此致、
迪内什·雷迪
