STM CircleOS forum / STM32 USART2 Interrupt for receiving data

harinath · 2012-04-23 07:05:36

I have STM32 iNEMO Eval board from ST. I wrote some USART2 code for it. The transmission has no problems. But I'm receiving only first 2 bytes of data from PC even if i send 5 bytes.

void USART2_IRQHandler(void)
{
if (USART_GetITStatus(USART2, USART_IT_RXNE) == SET)
{
USART_ClearFlag(USART2, USART_IT_RXNE);
BT_buffer_rx[rxCount] = (uint8_t)USART_ReceiveData(USART2); // Read into buffer
rxCount++; // global uint8_t
}
}

Any help appreciated.
Thanks
http://harinadha.wordpress.com/2012/04/17/stm32_usart2/

Last edited by harinath (2012-04-23 07:07:17)

harinath · 2012-04-27 08:07:39

I have no problems in receiving now. But, i have only 1 problem in receiving while the device sending data. If i send a 3 bytes command to device , its not receiving.
What would be the problem ?

primagen · 2012-05-03 09:06:06

First you dont need to clear RXNE Flag because its cleared automatic if you read data register.

harinath · 2012-05-04 05:08:57

You are right. I removed that line. I'm still having the problem i mentioned in this post.
I send some commands to Device from computer, They are received well. But if i send commands to Device when the device is transmitting data packets to computer, they are not received by Device USART, only first char is received.

I debugged several times. The problem still exists.

Last edited by harinath (2012-05-04 05:09:48)

primagen · 2012-09-18 19:24:18

sorry that im answering late did you solved it?

Last edited by primagen (2012-09-18 19:25:12)

harinath · 2012-10-23 07:25:29

The problem solved long time ago, i could not be able to write the answer because of busy schedule. Anyway i solved it.
Thanks.

# 1 2012-04-23 07:05:36 STM32 USART2 Interrupt for receiving data

STM32 USART2 Interrupt for receiving data

# 2 2012-04-27 08:07:39 STM32 USART2 Interrupt for receiving data

Re: STM32 USART2 Interrupt for receiving data

# 3 2012-05-03 09:06:06 STM32 USART2 Interrupt for receiving data

Re: STM32 USART2 Interrupt for receiving data

# 4 2012-05-04 05:08:57 STM32 USART2 Interrupt for receiving data

Re: STM32 USART2 Interrupt for receiving data

# 5 2012-09-18 19:24:18 STM32 USART2 Interrupt for receiving data

Re: STM32 USART2 Interrupt for receiving data

# 6 2012-10-23 07:25:29 STM32 USART2 Interrupt for receiving data

Re: STM32 USART2 Interrupt for receiving data

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