S32KのトピックRe: lpuart_rcv

lpuart_rcv

intern_praveena — Tue, 21 May 2019 09:08:13 GMT

I m using S32K144_64 , i have done uart send and recive using LPUART1,but nothing is displayed in putty but while debugging its working.here is my code, only send data is working.

#include "Cpu.h"

volatile int exit_code = 0;
uint8_t txbuff = 'A';
uint8_t rxbuff;
uint8_t rem_data;

CLOCK_SYS_Init(g_clockManConfigsArr, CLOCK_MANAGER_CONFIG_CNT, g_clockManCallbacksArr, CLOCK_MANAGER_CALLBACK_CNT);
CLOCK_SYS_UpdateConfiguration(0U, CLOCK_MANAGER_POLICY_FORCIBLE);

PINS_DRV_Init(NUM_OF_CONFIGURED_PINS, g_pin_mux_InitConfigArr);
PINS_DRV_SetPinsDirection(PTB,(1<<0));
PINS_DRV_SetPins(PTB,(1<<0));

LPUART_DRV_Init(INST_LPUART1, &lpuart1_State, &lpuart1_InitConfig0);
while(1)
{
//LPUART_DRV_SendData(INST_LPUART1,&txbuff,1);
PINS_DRV_WritePins(PTB,(0<<0));
LPUART_DRV_ReceiveData(INST_LPUART1,&rxbuff,1);
}

Re: lpuart_rcv

PetrS — Wed, 22 May 2019 10:35:54 GMT

Hi,

if using non-blocking function you should add waiting for successful RX process. Try below code

uint32_t bytesRemaining;

while(1)
{
PINS_DRV_WritePins(PTB,(0<<0));
LPUART_DRV_ReceiveData(INST_LPUART1,&rxbuff,1);

/* Wait for transfer to be completed */
while(LPUART_DRV_GetReceiveStatus(INST_LPUART1, &bytesRemaining) == STATUS_BUSY);

// process receive data here

}

BR, Petr

Re: lpuart_rcv

intern_praveena — Thu, 23 May 2019 06:23:37 GMT

hi petr Stancik,

non - blocking is false. The same happen again,if i press '1' its not display.

Re: lpuart_rcv

intern_praveena — Thu, 23 May 2019 10:13:49 GMT

Now its printing i changed putty settings but now microcontrlr is not receiving .

Re: lpuart_rcv

intern_praveena — Thu, 23 May 2019 11:56:34 GMT

I want to send and receive through microcontroler,but only transmit is working.

can anyone hlp me to resolve this problem?