sensor_pzem: fix libopencm3 interface
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@ -176,7 +176,7 @@ struct sensor_pzem_measurement_t sensor_pzem_measurement_decode(void)
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/** USART interrupt service routine called when data has been transmitted or received */
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void USART_ISR(SENSOR_PZEM_USART)(void)
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{
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if (usart_get_interrupt_source(USART(SENSOR_PZEM_USART), USART_SR_TXE)) { // data has been transmitted
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if (usart_get_flag(USART(SENSOR_PZEM_USART), USART_SR_TXE)) { // data has been transmitted
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if (tx_i<LENGTH(tx_buffer)) { // not all bytes transmitted
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usart_send(USART(SENSOR_PZEM_USART),tx_buffer[tx_i++]); // transmit next byte
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} else { // request transmitted
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@ -186,7 +186,7 @@ void USART_ISR(SENSOR_PZEM_USART)(void)
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}
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}
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if (usart_get_interrupt_source(USART(SENSOR_PZEM_USART), USART_SR_RXNE)) { // data has been received
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if (usart_get_flag(USART(SENSOR_PZEM_USART), USART_SR_RXNE)) { // data has been received
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if (rx_i<LENGTH(rx_buffer)) { // receiving response
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rx_buffer[rx_i++] = usart_recv(USART(SENSOR_PZEM_USART)); // put received byte in buffer
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if (rx_i>=LENGTH(rx_buffer)) { // buffer full
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