7 years ago.

MODSERIAL port works for printf and getc etc but hangs when I change baud etc.

My MODSERIAL port seems to work when I do things like pc.putc(pc.getc()); and pc.printf("test"); but hangs when I do things like pc.baud(115200); and pc.format(8, Serial::Even, 2);.

What is likely to be the problem ?

My MODSERIAL port files below.

.h file

1. ifdef TARGET_NUCLEO_F767ZI

1. define MODSERIAL_IRQ_REG ((USART_TypeDef*)_base)->CR1
2. define DISABLE_TX_IRQ MODSERIAL_IRQ_REG &= USART_CR1_TXEIE
3. define DISABLE_RX_IRQ MODSERIAL_IRQ_REG &= USART_CR1_RXNEIE
4. define ENABLE_TX_IRQ MODSERIAL_IRQ_REG |= USART_CR1_TXEIE
5. define ENABLE_RX_IRQ MODSERIAL_IRQ_REG |= USART_CR1_RXNEIE

1. define MODSERIAL_READ_REG ((USART_TypeDef*)_base)->RDR
2. define MODSERIAL_WRITE_REG ((USART_TypeDef*)_base)->TDR
3. define MODSERIAL_READABLE ((((USART_TypeDef*)_base)->ISR & USART_ISR_RXNE) != 0)
4. define MODSERIAL_WRITABLE ((((USART_TypeDef*)_base)->ISR & USART_ISR_TXE) != 0)

1. define RESET_TX_FIFO while(0 == 1)
2. define RESET_RX_FIFO while(MODSERIAL_READABLE) char dummy = MODSERIAL_READ_REG

1. define RX_IRQ_ENABLED ((MODSERIAL_IRQ_REG & USART_CR1_RXNEIE) != 0)
2. define TX_IRQ_ENABLED ((MODSERIAL_IRQ_REG & USART_CR1_TXEIE) != 0)

1. endif

1. ifdef TARGET_NUCLEO_F767ZI
2. include "MODSERIAL.h"

.cpp file void MODSERIAL::setBase(void ) { switch( _serial.index ) { switch( _serial.serial.index ) {

case 0: _base = USART1; _IRQ = USART1_IRQn; break; case 1: _base = USART2; _IRQ = USART2_IRQn; break; case 2: _base = USART3; _IRQ = USART3_IRQn; break; case 3: _base = USART6; _IRQ = USART6_IRQn; break; default: _base = NULL; _IRQ = (IRQn_Type)NULL; break; } }

void MODSERIAL::initDevice(void) {};

bool MODSERIAL::txIsBusy( void ) { return ( (((USART_TypeDef*)_base)->ISR & ( 1UL << 6 )) == 0 ) ? true : false; }

1. endif