diff options
Diffstat (limited to 'thirdparty/nRF5_SDK_15.0.0_a53641a/components/serialization/common/transport/ser_phy/ser_phy_uart.c')
| -rw-r--r-- | thirdparty/nRF5_SDK_15.0.0_a53641a/components/serialization/common/transport/ser_phy/ser_phy_uart.c | 357 |
1 files changed, 357 insertions, 0 deletions
diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/serialization/common/transport/ser_phy/ser_phy_uart.c b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/serialization/common/transport/ser_phy/ser_phy_uart.c new file mode 100644 index 0000000..d690ac7 --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/serialization/common/transport/ser_phy/ser_phy_uart.c @@ -0,0 +1,357 @@ +/** + * Copyright (c) 2014 - 2018, Nordic Semiconductor ASA + * + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form, except as embedded into a Nordic + * Semiconductor ASA integrated circuit in a product or a software update for + * such product, must reproduce the above copyright notice, this list of + * conditions and the following disclaimer in the documentation and/or other + * materials provided with the distribution. + * + * 3. Neither the name of Nordic Semiconductor ASA nor the names of its + * contributors may be used to endorse or promote products derived from this + * software without specific prior written permission. + * + * 4. This software, with or without modification, must only be used with a + * Nordic Semiconductor ASA integrated circuit. + * + * 5. Any software provided in binary form under this license must not be reverse + * engineered, decompiled, modified and/or disassembled. + * + * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT + * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ +#include "ser_phy.h" +#include "ser_config.h" +#ifdef SER_CONNECTIVITY + #include "ser_phy_config_conn.h" +#else + #include "ser_phy_config_app.h" +#endif +#include "nrf_drv_uart.h" +#include "app_error.h" +#include "app_util.h" +#include "app_util_platform.h" + +#define UART_TRANSFER_MAX 255 + +#if defined(UARTE_PRESENT) && !defined(UART_PRESENT) +#define SER_UART_IRQ UARTE0_IRQn +#else +#define SER_UART_IRQ UART0_IRQn +#endif + +static const nrf_drv_uart_t m_uart = NRF_DRV_UART_INSTANCE(0); +static const nrf_drv_uart_config_t m_uart_config = { + .pseltxd = SER_PHY_UART_TX, + .pselrxd = SER_PHY_UART_RX, + .pselrts = SER_PHY_UART_RTS, + .pselcts = SER_PHY_UART_CTS, + .p_context = NULL, + .interrupt_priority = UART_IRQ_PRIORITY, +#if defined(UARTE_PRESENT) && defined(UART_PRESENT) + .use_easy_dma = true, +#endif + // These values are common for application and connectivity, they are + // defined in "ser_config.h". + .hwfc = SER_PHY_UART_FLOW_CTRL, + .parity = SER_PHY_UART_PARITY, + .baudrate = (nrf_uart_baudrate_t)SER_PHY_UART_BAUDRATE +}; + +static bool volatile m_tx_in_progress; +static uint8_t m_tx_header_buf[SER_PHY_HEADER_SIZE]; +static uint16_t m_bytes_to_transmit; +static uint8_t const * mp_tx_buffer; + +static uint8_t m_rx_header_buf[SER_PHY_HEADER_SIZE]; +static uint16_t m_bytes_to_receive; +static uint8_t m_rx_drop_buf[1]; + +static ser_phy_events_handler_t m_ser_phy_event_handler; +static ser_phy_evt_t m_ser_phy_rx_event; + + +static void packet_sent_callback(void) +{ + static ser_phy_evt_t const event = { + .evt_type = SER_PHY_EVT_TX_PKT_SENT, + }; + m_ser_phy_event_handler(event); +} + +static void buffer_request_callback(uint16_t num_of_bytes) +{ + m_ser_phy_rx_event.evt_type = SER_PHY_EVT_RX_BUF_REQUEST; + m_ser_phy_rx_event.evt_params.rx_buf_request.num_of_bytes = num_of_bytes; + m_ser_phy_event_handler(m_ser_phy_rx_event); +} + +static void packet_received_callback(void) +{ + m_ser_phy_event_handler(m_ser_phy_rx_event); +} + +static void packet_dropped_callback(void) +{ + static ser_phy_evt_t const event = { + .evt_type = SER_PHY_EVT_RX_PKT_DROPPED, + }; + m_ser_phy_event_handler(event); +} + +static void hardware_error_callback(uint32_t hw_error) +{ + ser_phy_evt_t event = { + .evt_type = SER_PHY_EVT_HW_ERROR, + .evt_params.hw_error.error_code = hw_error, + }; + m_ser_phy_event_handler(event); +} + +static void packet_rx_start(void) +{ + APP_ERROR_CHECK(nrf_drv_uart_rx(&m_uart, m_rx_header_buf, + SER_PHY_HEADER_SIZE)); +} + +static void packet_byte_drop(void) +{ + APP_ERROR_CHECK(nrf_drv_uart_rx(&m_uart, m_rx_drop_buf, 1)); +} + +static void uart_event_handler(nrf_drv_uart_event_t * p_event, + void * p_context) +{ + (void)p_context; + + switch (p_event->type) + { + case NRF_DRV_UART_EVT_ERROR: + // Process the error only if this is a parity or overrun error. + // Break and framing errors will always occur before the other + // side becomes active. + if (p_event->data.error.error_mask & + (NRF_UART_ERROR_PARITY_MASK | NRF_UART_ERROR_OVERRUN_MASK)) + { + // Pass error source to upper layer. + hardware_error_callback(p_event->data.error.error_mask); + } + + packet_rx_start(); + break; + + case NRF_DRV_UART_EVT_TX_DONE: + if (p_event->data.rxtx.p_data == m_tx_header_buf) + { +#if (SER_HAL_TRANSPORT_TX_MAX_PKT_SIZE > UART_TRANSFER_MAX) + if (m_bytes_to_transmit > UART_TRANSFER_MAX) + { + APP_ERROR_CHECK(nrf_drv_uart_tx(&m_uart, mp_tx_buffer, + UART_TRANSFER_MAX)); + } + else +#endif // (SER_HAL_TRANSPORT_TX_MAX_PKT_SIZE > UART_TRANSFER_MAX) + { + APP_ERROR_CHECK(nrf_drv_uart_tx(&m_uart, mp_tx_buffer, + m_bytes_to_transmit)); + } + } + else + { +#if (SER_HAL_TRANSPORT_TX_MAX_PKT_SIZE > UART_TRANSFER_MAX) + ASSERT(p_event->data.rxtx.bytes <= m_bytes_to_transmit); + m_bytes_to_transmit -= p_event->data.rxtx.bytes; + if (m_bytes_to_transmit != 0) + { + APP_ERROR_CHECK(nrf_drv_uart_tx(&m_uart, + p_event->data.rxtx.p_data + p_event->data.rxtx.bytes, + m_bytes_to_transmit < UART_TRANSFER_MAX ? + m_bytes_to_transmit : UART_TRANSFER_MAX)); + } + else +#endif // (SER_HAL_TRANSPORT_TX_MAX_PKT_SIZE > UART_TRANSFER_MAX) + { + m_tx_in_progress = false; + packet_sent_callback(); + } + } + break; + + case NRF_DRV_UART_EVT_RX_DONE: + if (p_event->data.rxtx.p_data == m_rx_header_buf) + { + m_bytes_to_receive = uint16_decode(m_rx_header_buf); + buffer_request_callback(m_bytes_to_receive); + } + else if (p_event->data.rxtx.p_data == m_rx_drop_buf) + { + --m_bytes_to_receive; + if (m_bytes_to_receive != 0) + { + packet_byte_drop(); + } + else + { + packet_dropped_callback(); + + packet_rx_start(); + } + } + else + { +#if (SER_HAL_TRANSPORT_RX_MAX_PKT_SIZE > UART_TRANSFER_MAX) + ASSERT(p_event->data.rxtx.bytes <= m_bytes_to_receive); + m_bytes_to_receive -= p_event->data.rxtx.bytes; + if (m_bytes_to_receive != 0) + { + APP_ERROR_CHECK(nrf_drv_uart_rx(&m_uart, + p_event->data.rxtx.p_data + p_event->data.rxtx.bytes, + m_bytes_to_receive < UART_TRANSFER_MAX ? + m_bytes_to_receive : UART_TRANSFER_MAX)); + } + else +#endif // (SER_HAL_TRANSPORT_RX_MAX_PKT_SIZE > UART_TRANSFER_MAX) + { + packet_received_callback(); + + packet_rx_start(); + } + } + break; + + default: + APP_ERROR_CHECK(NRF_ERROR_INTERNAL); + } +} + +/** API FUNCTIONS */ + +uint32_t ser_phy_open(ser_phy_events_handler_t events_handler) +{ + uint32_t err_code; + + if (events_handler == NULL) + { + return NRF_ERROR_NULL; + } + + // Check if function was not called before. + if (m_ser_phy_event_handler != NULL) + { + return NRF_ERROR_INVALID_STATE; + } + + err_code = nrf_drv_uart_init(&m_uart, &m_uart_config, uart_event_handler); + if (err_code != NRF_SUCCESS) + { + return NRF_ERROR_INVALID_PARAM; + } + + m_ser_phy_event_handler = events_handler; + + packet_rx_start(); + + return err_code; +} + +uint32_t ser_phy_tx_pkt_send(const uint8_t * p_buffer, uint16_t num_of_bytes) +{ + if (p_buffer == NULL) + { + return NRF_ERROR_NULL; + } + else if (num_of_bytes == 0) + { + return NRF_ERROR_INVALID_PARAM; + } + + bool busy; + + CRITICAL_REGION_ENTER(); + busy = m_tx_in_progress; + m_tx_in_progress = true; + CRITICAL_REGION_EXIT(); + + if (busy) + { + return NRF_ERROR_BUSY; + } + + (void)uint16_encode(num_of_bytes, m_tx_header_buf); + mp_tx_buffer = p_buffer; + m_bytes_to_transmit = num_of_bytes; + APP_ERROR_CHECK(nrf_drv_uart_tx(&m_uart, m_tx_header_buf, + SER_PHY_HEADER_SIZE)); + + return NRF_SUCCESS; +} + + +uint32_t ser_phy_rx_buf_set(uint8_t * p_buffer) +{ + + if (m_ser_phy_rx_event.evt_type != SER_PHY_EVT_RX_BUF_REQUEST) + { + return NRF_ERROR_INVALID_STATE; + } + + m_ser_phy_rx_event.evt_type = SER_PHY_EVT_RX_PKT_RECEIVED; + m_ser_phy_rx_event.evt_params.rx_pkt_received.p_buffer = p_buffer; + m_ser_phy_rx_event.evt_params.rx_pkt_received.num_of_bytes = + m_bytes_to_receive; + + // If there is not enough memory to receive the packet (no buffer was + // provided), drop its data byte by byte (using an internal 1-byte buffer). + if (p_buffer == NULL) + { + packet_byte_drop(); + } +#if (SER_HAL_TRANSPORT_RX_MAX_PKT_SIZE > UART_TRANSFER_MAX) + else if (m_bytes_to_receive > UART_TRANSFER_MAX) + { + APP_ERROR_CHECK(nrf_drv_uart_rx(&m_uart, p_buffer, UART_TRANSFER_MAX)); + } +#endif // (SER_HAL_TRANSPORT_RX_MAX_PKT_SIZE > UART_TRANSFER_MAX) + else + { + APP_ERROR_CHECK(nrf_drv_uart_rx(&m_uart, p_buffer, m_bytes_to_receive)); + } + + return NRF_SUCCESS; +} + + +void ser_phy_close(void) +{ + nrf_drv_uart_uninit(&m_uart); + m_ser_phy_event_handler = NULL; +} + + +void ser_phy_interrupts_enable(void) +{ + NVIC_EnableIRQ(SER_UART_IRQ); +} + + +void ser_phy_interrupts_disable(void) +{ + NVIC_DisableIRQ(SER_UART_IRQ); +} |