uart_soft: minor, put spaces around operators
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@ -12,10 +12,10 @@
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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/** library to control up to 4 independent receive and transmit software UART ports (code)
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* @file uart_soft.c
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/** library to control up to 4 independent receive and transmit software UART ports
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* @file
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* @author King Kévin <kingkevin@cuvoodoo.info>
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* @date 2016
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* @date 2016-2020
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* @note peripherals used: GPIO @ref uart_soft_gpio, timer @ref uart_soft_timer
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*/
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@ -108,9 +108,9 @@ volatile bool uart_soft_received[4] = {false, false, false, false};
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#endif
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/** @} */
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static const uint32_t timer_flags[4] = {TIM_SR_CC1IF,TIM_SR_CC2IF,TIM_SR_CC3IF,TIM_SR_CC4IF}; /**< the interrupt flags for the compare units */
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static const uint32_t timer_interrupt[4] = {TIM_DIER_CC1IE,TIM_DIER_CC2IE,TIM_DIER_CC3IE,TIM_DIER_CC4IE}; /**< the interrupt enable for the compare units */
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static const enum tim_oc_id timer_oc[4] = {TIM_OC1,TIM_OC2,TIM_OC3,TIM_OC4}; /**< the output compares for the compare units */
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static const uint32_t timer_flags[4] = {TIM_SR_CC1IF, TIM_SR_CC2IF, TIM_SR_CC3IF, TIM_SR_CC4IF}; /**< the interrupt flags for the compare units */
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static const uint32_t timer_interrupt[4] = {TIM_DIER_CC1IE, TIM_DIER_CC2IE, TIM_DIER_CC3IE, TIM_DIER_CC4IE}; /**< the interrupt enable for the compare units */
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static const enum tim_oc_id timer_oc[4] = {TIM_OC1, TIM_OC2, TIM_OC3, TIM_OC4}; /**< the output compares for the compare units */
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bool uart_soft_setup(uint32_t *rx_baudrates, uint32_t *tx_baudrates)
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{
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@ -119,7 +119,7 @@ bool uart_soft_setup(uint32_t *rx_baudrates, uint32_t *tx_baudrates)
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// save UART receive definition
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#if defined(UART_SOFT_RX_PORT0) && defined(UART_SOFT_RX_PIN0)
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uart_soft_rx_states[0] = calloc(1,sizeof(struct soft_uart_rx_state)); // create state definition
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uart_soft_rx_states[0] = calloc(1, sizeof(struct soft_uart_rx_state)); // create state definition
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uart_soft_rx_states[0]->port = GPIO(UART_SOFT_RX_PORT0); // save receive port
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uart_soft_rx_states[0]->pin = GPIO(UART_SOFT_RX_PIN0); // save receive pin
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uart_soft_rx_states[0]->rcc = RCC_GPIO(UART_SOFT_RX_PORT0); // save receive port peripheral clock
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@ -128,11 +128,11 @@ bool uart_soft_setup(uint32_t *rx_baudrates, uint32_t *tx_baudrates)
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#endif
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// setup UART receive GPIO
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for (uint8_t rx=0; rx<4; rx++) {
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for (uint8_t rx = 0; rx < 4; rx++) {
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if (!uart_soft_rx_states[rx]) { // verify is receive UART is defined
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continue; // skip configuration if not defined
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}
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if (!rx_baudrates || rx_baudrates[rx]==0) { // verify if receive baud rate has been defined
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if (!rx_baudrates || 0 == rx_baudrates[rx]) { // verify if receive baud rate has been defined
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return false;
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}
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uart_soft_rx_states[rx]->baudrate = rx_baudrates[rx]; // save baud rate
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@ -150,18 +150,18 @@ bool uart_soft_setup(uint32_t *rx_baudrates, uint32_t *tx_baudrates)
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// save UART transmit definition
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#if defined(UART_SOFT_TX_PORT0) && defined(UART_SOFT_TX_PIN0)
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uart_soft_tx_states[0] = calloc(1,sizeof(struct soft_uart_tx_state)); // create state definition
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uart_soft_tx_states[0] = calloc(1, sizeof(struct soft_uart_tx_state)); // create state definition
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uart_soft_tx_states[0]->port = GPIO(UART_SOFT_TX_PORT0); // save receive port
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uart_soft_tx_states[0]->pin = GPIO(UART_SOFT_TX_PIN0); // save receive pin
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uart_soft_tx_states[0]->rcc = RCC_GPIO(UART_SOFT_TX_PORT0); // save receive port peripheral clock
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#endif
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// setup UART transmit GPIO
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for (uint8_t tx=0; tx<4; tx++) {
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for (uint8_t tx = 0; tx < 4; tx++) {
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if (!uart_soft_tx_states[tx]) { // verify is transmit UART is defined
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continue; // skip configuration if not defined
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}
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if (!tx_baudrates || tx_baudrates[tx]==0) { // verify if transmit baud rate has been defined
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if (!tx_baudrates || 0 == tx_baudrates[tx]) { // verify if transmit baud rate has been defined
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return false;
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}
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uart_soft_tx_states[tx]->baudrate = tx_baudrates[tx]; // save baud rate
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@ -194,7 +194,7 @@ bool uart_soft_setup(uint32_t *rx_baudrates, uint32_t *tx_baudrates)
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#if defined(UART_SOFT_RX_TIMER)
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uint8_t uart_soft_getbyte(uint8_t uart)
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{
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if (uart>=4 || !uart_soft_rx_states[uart]) { // ensure receive UART port is defined
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if (uart >= 4 || !uart_soft_rx_states[uart]) { // ensure receive UART port is defined
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return 0; // return
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}
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while (!uart_soft_rx_states[uart]->buffer_used) { // idle until data is available
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@ -202,15 +202,15 @@ uint8_t uart_soft_getbyte(uint8_t uart)
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}
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uart_soft_rx_states[uart]->lock = true; // set lock
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uint8_t to_return = uart_soft_rx_states[uart]->buffer[uart_soft_rx_states[uart]->buffer_i]; // get the next available character
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uart_soft_rx_states[uart]->buffer_i = (uart_soft_rx_states[uart]->buffer_i+1)%LENGTH(uart_soft_rx_states[uart]->buffer); // update used buffer
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uart_soft_rx_states[uart]->buffer_i = (uart_soft_rx_states[uart]->buffer_i + 1) % LENGTH(uart_soft_rx_states[uart]->buffer); // update used buffer
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uart_soft_rx_states[uart]->buffer_used--; // update used buffer
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uart_soft_rx_states[uart]->lock = false; // free lock
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if (uart_soft_rx_states[uart]->buffer_byte_used) { // temporary byte has been stored
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uart_soft_rx_states[uart]->buffer[(uart_soft_rx_states[uart]->buffer_i+uart_soft_rx_states[uart]->buffer_used)%LENGTH(uart_soft_rx_states[uart]->buffer)] = uart_soft_rx_states[uart]->buffer_byte; // put byte in buffer
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uart_soft_rx_states[uart]->buffer[(uart_soft_rx_states[uart]->buffer_i + uart_soft_rx_states[uart]->buffer_used) % LENGTH(uart_soft_rx_states[uart]->buffer)] = uart_soft_rx_states[uart]->buffer_byte; // put byte in buffer
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uart_soft_rx_states[uart]->buffer_used++; // update used buffer
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uart_soft_rx_states[uart]->buffer_byte_used = false; // buffer byte is now in buffer
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}
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uart_soft_received[uart] = (uart_soft_rx_states[uart]->buffer_used!=0); // notify user if data is available
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uart_soft_received[uart] = (0 != uart_soft_rx_states[uart]->buffer_used); // notify user if data is available
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uart_soft_rx_states[uart]->lock = false; // free lock
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return to_return;
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}
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@ -218,30 +218,30 @@ uint8_t uart_soft_getbyte(uint8_t uart)
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/** timer interrupt service routine to generate UART transmit signals */
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void TIM_ISR(UART_SOFT_RX_TIMER)(void)
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{
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for (uint8_t rx=0; rx<4; rx++) {
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for (uint8_t rx = 0; rx < 4; rx++) {
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if (timer_interrupt_source(TIM(UART_SOFT_RX_TIMER),timer_flags[rx])) { // got a match on compare for receive pin
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timer_clear_flag(TIM(UART_SOFT_RX_TIMER),timer_flags[rx]); // clear flag
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if (!uart_soft_rx_states[rx]) { // verify if RX exists
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continue; // skip if receive port is not defined it
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}
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uart_soft_rx_states[rx]->byte += ((gpio_get(uart_soft_rx_states[rx]->port, uart_soft_rx_states[rx]->pin)==0 ? 0 : 1)<<(uart_soft_rx_states[rx]->bit-1)); // save bit value
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if (uart_soft_rx_states[rx]->bit<8) { // not the last bit received
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timer_set_oc_value(TIM(UART_SOFT_RX_TIMER),timer_oc[rx],timer_get_counter(TIM(UART_SOFT_RX_TIMER))+rcc_ahb_frequency/uart_soft_rx_states[rx]->baudrate); // set timer to next bit
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uart_soft_rx_states[rx]->byte += (0 == (gpio_get(uart_soft_rx_states[rx]->port, uart_soft_rx_states[rx]->pin) ? 0 : 1)<<(uart_soft_rx_states[rx]->bit - 1)); // save bit value
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if (uart_soft_rx_states[rx]->bit < 8) { // not the last bit received
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timer_set_oc_value(TIM(UART_SOFT_RX_TIMER), timer_oc[rx], timer_get_counter(TIM(UART_SOFT_RX_TIMER)) + rcc_ahb_frequency / uart_soft_rx_states[rx]->baudrate); // set timer to next bit
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uart_soft_rx_states[rx]->bit++; // wait for next bit
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} else { // last bit received
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if (uart_soft_rx_states[rx]->lock) { // someone is already reading data
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uart_soft_rx_states[rx]->buffer_byte = uart_soft_rx_states[rx]->byte; // save byte
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uart_soft_rx_states[rx]->buffer_byte_used = true; // notify reader there is a temporary byte
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} else { // buffer can be updated
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if (uart_soft_rx_states[rx]->buffer_used>=LENGTH(uart_soft_rx_states[rx]->buffer)) { // buffer is full
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uart_soft_rx_states[rx]->buffer_i = (uart_soft_rx_states[rx]->buffer_i+1)%LENGTH(uart_soft_rx_states[rx]->buffer); // drop oldest byte
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if (uart_soft_rx_states[rx]->buffer_used >= LENGTH(uart_soft_rx_states[rx]->buffer)) { // buffer is full
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uart_soft_rx_states[rx]->buffer_i = (uart_soft_rx_states[rx]->buffer_i + 1) % LENGTH(uart_soft_rx_states[rx]->buffer); // drop oldest byte
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uart_soft_rx_states[rx]->buffer_used--; // update buffer usage
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}
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uart_soft_rx_states[rx]->buffer[(uart_soft_rx_states[rx]->buffer_i+uart_soft_rx_states[rx]->buffer_used)%LENGTH(uart_soft_rx_states[rx]->buffer)] = uart_soft_rx_states[rx]->byte; // put byte in buffer
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uart_soft_rx_states[rx]->buffer[(uart_soft_rx_states[rx]->buffer_i + uart_soft_rx_states[rx]->buffer_used) % LENGTH(uart_soft_rx_states[rx]->buffer)] = uart_soft_rx_states[rx]->byte; // put byte in buffer
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uart_soft_rx_states[rx]->buffer_used++; // update used buffer
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uart_soft_received[rx] = true; // notify user data is available
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}
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timer_disable_irq(TIM(UART_SOFT_RX_TIMER),timer_interrupt[rx]); // stop_interrupting
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timer_disable_irq(TIM(UART_SOFT_RX_TIMER), timer_interrupt[rx]); // stop_interrupting
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uart_soft_rx_states[rx]->bit = 0; // next bit should be first bit of next byte
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}
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}
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@ -252,7 +252,7 @@ void TIM_ISR(UART_SOFT_RX_TIMER)(void)
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#if defined(UART_SOFT_TX_TIMER)
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void uart_soft_flush(uint8_t uart)
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{
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if (uart>=4 || !uart_soft_tx_states[uart]) { // ensure transmit UART port is defined
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if (uart >= 4 || !uart_soft_tx_states[uart]) { // ensure transmit UART port is defined
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return; // return
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}
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while (uart_soft_tx_states[uart]->buffer_used) { // idle until buffer is empty
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@ -277,25 +277,25 @@ static void uart_soft_transmit(uint8_t uart) {
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return; // nothing to transmit
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}
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uart_soft_tx_states[uart]->byte = uart_soft_tx_states[uart]->buffer[uart_soft_tx_states[uart]->buffer_i]; // get byte
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uart_soft_tx_states[uart]->buffer_i = (uart_soft_tx_states[uart]->buffer_i+1)%LENGTH(uart_soft_tx_states[uart]->buffer); // update index
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uart_soft_tx_states[uart]->buffer_i = (uart_soft_tx_states[uart]->buffer_i + 1) % LENGTH(uart_soft_tx_states[uart]->buffer); // update index
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uart_soft_tx_states[uart]->buffer_used--; // update used buffer
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uart_soft_tx_states[uart]->bit = 0; // LSb is transmitted first
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uart_soft_tx_states[uart]->transmit = true; // start transmission
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gpio_clear(uart_soft_tx_states[uart]->port, uart_soft_tx_states[uart]->pin); // output start bit
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timer_set_oc_value(TIM(UART_SOFT_TX_TIMER), timer_oc[uart], timer_get_counter(TIM(UART_SOFT_TX_TIMER))+(rcc_ahb_frequency/uart_soft_tx_states[uart]->baudrate)); // set timer to output UART frame 1 (data bit 0) in 1 bit
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timer_set_oc_value(TIM(UART_SOFT_TX_TIMER), timer_oc[uart], timer_get_counter(TIM(UART_SOFT_TX_TIMER)) + (rcc_ahb_frequency / uart_soft_tx_states[uart]->baudrate)); // set timer to output UART frame 1 (data bit 0) in 1 bit
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timer_clear_flag(TIM(UART_SOFT_TX_TIMER), timer_flags[uart]); // clear flag before enabling interrupt
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timer_enable_irq(TIM(UART_SOFT_TX_TIMER), timer_interrupt[uart]);// enable timer IRQ for TX for this UART
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}
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void uart_soft_putbyte_nonblocking(uint8_t uart, uint8_t byte)
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{
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if (uart>=4 || !uart_soft_tx_states[uart]) { // ensure transmit UART port is defined
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if (uart >= 4 || !uart_soft_tx_states[uart]) { // ensure transmit UART port is defined
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return; // return
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}
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while (uart_soft_tx_states[uart]->buffer_used>=LENGTH(uart_soft_tx_states[uart]->buffer)) { // idle until there is place in the buffer
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while (uart_soft_tx_states[uart]->buffer_used >= LENGTH(uart_soft_tx_states[uart]->buffer)) { // idle until there is place in the buffer
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__WFI(); // sleep until something happened
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}
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uart_soft_tx_states[uart]->buffer[(uart_soft_tx_states[uart]->buffer_i+uart_soft_tx_states[uart]->buffer_used)%LENGTH(uart_soft_tx_states[uart]->buffer)] = byte; // save byte to be transmitted
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uart_soft_tx_states[uart]->buffer[(uart_soft_tx_states[uart]->buffer_i + uart_soft_tx_states[uart]->buffer_used) % LENGTH(uart_soft_tx_states[uart]->buffer)] = byte; // save byte to be transmitted
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uart_soft_tx_states[uart]->buffer_used++; // update used buffer
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uart_soft_transmit(uart); // start transmission
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}
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@ -309,23 +309,23 @@ void uart_soft_putbyte_blocking(uint8_t uart, uint8_t byte)
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/** timer interrupt service routine to sample UART receive signals */
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void TIM_ISR(UART_SOFT_TX_TIMER)(void)
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{
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for (uint8_t tx=0; tx<4; tx++) {
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if (timer_interrupt_source(TIM(UART_SOFT_TX_TIMER),timer_flags[tx])) { // got a match on compare for transmit pin
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timer_clear_flag(TIM(UART_SOFT_TX_TIMER),timer_flags[tx]); // clear flag
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for (uint8_t tx = 0; tx < 4; tx++) {
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if (timer_interrupt_source(TIM(UART_SOFT_TX_TIMER), timer_flags[tx])) { // got a match on compare for transmit pin
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timer_clear_flag(TIM(UART_SOFT_TX_TIMER), timer_flags[tx]); // clear flag
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if (!uart_soft_tx_states[tx]) { // verify if transmit is defined
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continue; // skip if transmit port is not defined it
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}
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if (uart_soft_tx_states[tx]->bit<8) { // there is a data bit to transmit
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if ((uart_soft_tx_states[tx]->byte>>uart_soft_tx_states[tx]->bit)&0x01) { // bit to transmit is a 1
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if (uart_soft_tx_states[tx]->bit < 8) { // there is a data bit to transmit
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if ((uart_soft_tx_states[tx]->byte >> uart_soft_tx_states[tx]->bit) & 0x01) { // bit to transmit is a 1
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gpio_set(uart_soft_tx_states[tx]->port, uart_soft_tx_states[tx]->pin); // set output to high
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} else { // bit to transmit is a 0
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gpio_clear(uart_soft_tx_states[tx]->port, uart_soft_tx_states[tx]->pin); // set output to low
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}
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timer_set_oc_value(TIM(UART_SOFT_TX_TIMER), timer_oc[tx], timer_get_counter(TIM(UART_SOFT_TX_TIMER))+(rcc_ahb_frequency/uart_soft_tx_states[tx]->baudrate)); // wait for the next frame bit
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timer_set_oc_value(TIM(UART_SOFT_TX_TIMER), timer_oc[tx], timer_get_counter(TIM(UART_SOFT_TX_TIMER)) + (rcc_ahb_frequency / uart_soft_tx_states[tx]->baudrate)); // wait for the next frame bit
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uart_soft_tx_states[tx]->bit++; // go to next bit
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} else if (uart_soft_tx_states[tx]->bit==8) { // transmit stop bit
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} else if (8 == uart_soft_tx_states[tx]->bit) { // transmit stop bit
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gpio_set(uart_soft_tx_states[tx]->port, uart_soft_tx_states[tx]->pin); // go idle high
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timer_set_oc_value(TIM(UART_SOFT_TX_TIMER), timer_oc[tx], timer_get_counter(TIM(UART_SOFT_TX_TIMER))+(rcc_ahb_frequency/uart_soft_tx_states[tx]->baudrate)); // wait for 1 stop bit
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timer_set_oc_value(TIM(UART_SOFT_TX_TIMER), timer_oc[tx], timer_get_counter(TIM(UART_SOFT_TX_TIMER)) + (rcc_ahb_frequency / uart_soft_tx_states[tx]->baudrate)); // wait for 1 stop bit
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uart_soft_tx_states[tx]->bit++; // go to next bit
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} else { // UART frame is complete
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timer_disable_irq(TIM(UART_SOFT_TX_TIMER), timer_interrupt[tx]);// enable timer IRQ for TX for this UART
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@ -340,22 +340,22 @@ void TIM_ISR(UART_SOFT_TX_TIMER)(void)
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/** central function handling receive signal activity */
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static void uart_soft_receive_activity(void)
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{
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for (uint8_t rx=0; rx<4; rx++) {
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for (uint8_t rx = 0; rx < 4; rx++) {
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if (!uart_soft_rx_states[rx]) { // verify if receive port is not configured
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continue; // skip if receive port is not defined it
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}
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if (uart_soft_rx_states[rx]->state!=gpio_get(uart_soft_rx_states[rx]->port, uart_soft_rx_states[rx]->pin)) { // only do something if state changed
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uart_soft_rx_states[rx]->state = gpio_get(uart_soft_rx_states[rx]->port, uart_soft_rx_states[rx]->pin); // save new state
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if (uart_soft_rx_states[rx]->bit==0) { // start bit edge detected
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if (uart_soft_rx_states[rx]->state==0) { // start bit has to be low
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timer_set_oc_value(TIM(UART_SOFT_RX_TIMER), timer_oc[rx], timer_get_counter(TIM(UART_SOFT_RX_TIMER))+(rcc_ahb_frequency/uart_soft_rx_states[rx]->baudrate)*1.5); // set timer to sample data bit 0 in 1.5 bits
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if (0 == uart_soft_rx_states[rx]->bit) { // start bit edge detected
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if (0 == uart_soft_rx_states[rx]->state) { // start bit has to be low
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timer_set_oc_value(TIM(UART_SOFT_RX_TIMER), timer_oc[rx], timer_get_counter(TIM(UART_SOFT_RX_TIMER)) + (rcc_ahb_frequency / uart_soft_rx_states[rx]->baudrate) * 1.5); // set timer to sample data bit 0 in 1.5 bits
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timer_clear_flag(TIM(UART_SOFT_RX_TIMER), timer_flags[rx]); // clear flag before enabling interrupt
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timer_enable_irq(TIM(UART_SOFT_RX_TIMER), timer_interrupt[rx]);// enable timer IRQ for RX for this UART
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uart_soft_rx_states[rx]->byte = 0; // reset byte value
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uart_soft_rx_states[rx]->bit++; // wait for first bit
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}
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} else { // data bit detected
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timer_set_oc_value(TIM(UART_SOFT_RX_TIMER), timer_oc[rx], timer_get_counter(TIM(UART_SOFT_RX_TIMER))+(rcc_ahb_frequency/uart_soft_rx_states[rx]->baudrate)/2); // resync timer to half a bit (good for drifting transmission, bad if the line is noisy)
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timer_set_oc_value(TIM(UART_SOFT_RX_TIMER), timer_oc[rx], timer_get_counter(TIM(UART_SOFT_RX_TIMER)) + (rcc_ahb_frequency / uart_soft_rx_states[rx]->baudrate) / 2); // resync timer to half a bit (good for drifting transmission, bad if the line is noisy)
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}
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}
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}
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@ -400,15 +400,14 @@ void exti4_isr(void)
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#if (defined(UART_SOFT_RX_PORT0) && defined(UART_SOFT_RX_PIN0) && (UART_SOFT_RX_PIN0==5 || UART_SOFT_RX_PIN0==6 || UART_SOFT_RX_PIN0==7 || UART_SOFT_RX_PIN0==8 || UART_SOFT_RX_PIN0==9)) || (defined(UART_SOFT_RX_PORT1) && defined(UART_SOFT_RX_PIN1) && (UART_SOFT_RX_PIN1==5 || UART_SOFT_RX_PIN1==6 || UART_SOFT_RX_PIN1==7 || UART_SOFT_RX_PIN1==8 || UART_SOFT_RX_PIN1==9)) || (defined(UART_SOFT_RX_PORT2) && defined(UART_SOFT_RX_PIN2) && (UART_SOFT_RX_PIN2==5 || UART_SOFT_RX_PIN2==6 || UART_SOFT_RX_PIN2==7 || UART_SOFT_RX_PIN2==8 || UART_SOFT_RX_PIN2==9)) || (defined(UART_SOFT_RX_PORT3) && defined(UART_SOFT_RX_PIN3) && (UART_SOFT_RX_PIN3==5 || UART_SOFT_RX_PIN3==6 || UART_SOFT_RX_PIN3==7 || UART_SOFT_RX_PIN3==8 || UART_SOFT_RX_PIN3==9))
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void exti9_5_isr(void)
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||||
{
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||||
exti_reset_request(EXTI5|EXTI6|EXTI7|EXTI8|EXTI9); // clear interrupt flag for pin triggers this ISR (pin state will be checked independently)
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exti_reset_request(EXTI5 | EXTI6 | EXTI7 | EXTI8 | EXTI9); // clear interrupt flag for pin triggers this ISR (pin state will be checked independently)
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uart_soft_receive_activity(); // check which GPIO changed
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||||
}
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||||
#endif
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#if (defined(UART_SOFT_RX_PORT0) && defined(UART_SOFT_RX_PIN0) && (UART_SOFT_RX_PIN0==10 || UART_SOFT_RX_PIN0==11 || UART_SOFT_RX_PIN0==12 || UART_SOFT_RX_PIN0==13 || UART_SOFT_RX_PIN0==14 || UART_SOFT_RX_PIN0==15)) || (defined(UART_SOFT_RX_PORT1) && defined(UART_SOFT_RX_PIN1) && (UART_SOFT_RX_PIN1==10 || UART_SOFT_RX_PIN1==11 || UART_SOFT_RX_PIN1==12 || UART_SOFT_RX_PIN1==13 || UART_SOFT_RX_PIN1==14 || UART_SOFT_RX_PIN1==15)) || (defined(UART_SOFT_RX_PORT2) && defined(UART_SOFT_RX_PIN2) && (UART_SOFT_RX_PIN2==10 || UART_SOFT_RX_PIN2==11 || UART_SOFT_RX_PIN2==12 || UART_SOFT_RX_PIN2==13 || UART_SOFT_RX_PIN2==14 || UART_SOFT_RX_PIN2==15)) || (defined(UART_SOFT_RX_PORT3) && defined(UART_SOFT_RX_PIN3) && (UART_SOFT_RX_PIN3==10 || UART_SOFT_RX_PIN3==11 || UART_SOFT_RX_PIN3==12 || UART_SOFT_RX_PIN3==13 || UART_SOFT_RX_PIN3==14 || UART_SOFT_RX_PIN3==15))
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||||
void exti15_10_isr(void)
|
||||
{
|
||||
exti_reset_request(EXTI10|EXTI11|EXTI12|EXTI13|EXTI14|EXTI15); // clear interrupt flag for pin triggers this ISR (pin state will be checked independently)
|
||||
exti_reset_request(EXTI10 | EXTI11 | EXTI12 | EXTI13 | EXTI14 | EXTI15); // clear interrupt flag for pin triggers this ISR (pin state will be checked independently)
|
||||
uart_soft_receive_activity(); // check which GPIO changed
|
||||
}
|
||||
#endif
|
||||
|
||||
|
|
|
|||
|
|
@ -12,10 +12,10 @@
|
|||
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*
|
||||
*/
|
||||
/** library to control up to 4 independent receive and transmit software UART ports (API)
|
||||
* @file uart_soft.h
|
||||
/** library to control up to 4 independent receive and transmit software UART ports
|
||||
* @file
|
||||
* @author King Kévin <kingkevin@cuvoodoo.info>
|
||||
* @date 2016
|
||||
* @date 2016-2020
|
||||
* @note peripherals used: GPIO @ref uart_soft_gpio, timer @ref uart_soft_timer
|
||||
*/
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue