/* * This file is part of the MicroPython project, http://micropython.org/ * * The MIT License (MIT) * * Copyright (c) 2016 Glenn Ruben Bakke * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #include #include #include "mphalport.h" #include "hal_uart.h" #include "hal_irq.h" #ifdef HAL_UARTE_MODULE_ENABLED #include "nrf.h" #ifndef NRF52 #error "Device not supported." #endif #define UART_BASE(x) ((NRF_UART_Type *)UART_BASE_POINTERS[x]) #define UART_IRQ_NUM(x) (UART_IRQ_VALUES[x]) #define TX_BUF_SIZE 1 #define RX_BUF_SIZE 1 static const uint32_t hal_uart_baudrate_lookup[] = { UARTE_BAUDRATE_BAUDRATE_Baud1200, ///< 1200 baud. UARTE_BAUDRATE_BAUDRATE_Baud2400, ///< 2400 baud. UARTE_BAUDRATE_BAUDRATE_Baud4800, ///< 4800 baud. UARTE_BAUDRATE_BAUDRATE_Baud9600, ///< 9600 baud. UARTE_BAUDRATE_BAUDRATE_Baud14400, ///< 14400 baud. UARTE_BAUDRATE_BAUDRATE_Baud19200, ///< 19200 baud. UARTE_BAUDRATE_BAUDRATE_Baud28800, ///< 28800 baud. UARTE_BAUDRATE_BAUDRATE_Baud38400, ///< 38400 baud. UARTE_BAUDRATE_BAUDRATE_Baud57600, ///< 57600 baud. UARTE_BAUDRATE_BAUDRATE_Baud76800, ///< 76800 baud. UARTE_BAUDRATE_BAUDRATE_Baud115200, ///< 115200 baud. UARTE_BAUDRATE_BAUDRATE_Baud230400, ///< 230400 baud. UARTE_BAUDRATE_BAUDRATE_Baud250000, ///< 250000 baud. UARTE_BAUDRATE_BAUDRATE_Baud460800, ///< 460800 baud. UARTE_BAUDRATE_BAUDRATE_Baud921600, ///< 921600 baud. UARTE_BAUDRATE_BAUDRATE_Baud1M, ///< 1000000 baud. }; void nrf_sendchar(NRF_UART_Type * p_instance, int ch) { hal_uart_char_write(p_instance, ch); } void hal_uart_init(NRF_UART_Type * p_instance, hal_uart_init_t const * p_uart_init) { NRF_UARTE_Type * uarte_instance = (NRF_UARTE_Type *)p_instance; hal_gpio_cfg_pin(p_uart_init->tx_pin->port, p_uart_init->tx_pin->pin, HAL_GPIO_MODE_OUTPUT, HAL_GPIO_PULL_DISABLED); hal_gpio_pin_set(p_uart_init->tx_pin->port, p_uart_init->tx_pin->pin); hal_gpio_cfg_pin(p_uart_init->tx_pin->port, p_uart_init->rx_pin->pin, HAL_GPIO_MODE_INPUT, HAL_GPIO_PULL_DISABLED); uarte_instance->BAUDRATE = (hal_uart_baudrate_lookup[p_uart_init->baud_rate]); uint32_t hwfc = (p_uart_init->flow_control) ? (UARTE_CONFIG_HWFC_Enabled << UARTE_CONFIG_HWFC_Pos) : (UARTE_CONFIG_HWFC_Disabled << UARTE_CONFIG_HWFC_Pos); uint32_t parity = (p_uart_init->use_parity) ? (UARTE_CONFIG_PARITY_Included << UARTE_CONFIG_PARITY_Pos) : (UARTE_CONFIG_PARITY_Excluded << UARTE_CONFIG_PARITY_Pos); uarte_instance->CONFIG = (uint32_t)hwfc | (uint32_t)parity; uarte_instance->PSEL.RXD = p_uart_init->rx_pin->pin; uarte_instance->PSEL.TXD = p_uart_init->tx_pin->pin; #if NRF52840_XXAA uarte_instance->PSEL.RXD |= (p_uart_init->rx_pin->port << UARTE_PSEL_RXD_PORT_Pos); uarte_instance->PSEL.TXD |= (p_uart_init->tx_pin->port << UARTE_PSEL_TXD_PORT_Pos); #endif if (hwfc) { hal_gpio_cfg_pin(p_uart_init->cts_pin->port, p_uart_init->cts_pin->pin, HAL_GPIO_MODE_INPUT, HAL_GPIO_PULL_DISABLED); hal_gpio_cfg_pin(p_uart_init->rts_pin->port, p_uart_init->rts_pin->pin, HAL_GPIO_MODE_OUTPUT, HAL_GPIO_PULL_DISABLED); hal_gpio_pin_set(p_uart_init->rts_pin->port, p_uart_init->rts_pin->pin); uarte_instance->PSEL.RTS = p_uart_init->rts_pin->pin; uarte_instance->PSEL.CTS = p_uart_init->cts_pin->pin; #if NRF52840_XXAA uarte_instance->PSEL.RTS |= (p_uart_init->rx_pin->port << UARTE_PSEL_RTS_PORT_Pos); uarte_instance->PSEL.CTS |= (p_uart_init->rx_pin->port << UARTE_PSEL_CTS_PORT_Pos); #endif } hal_irq_priority(p_uart_init->irq_num, p_uart_init->irq_priority); hal_irq_enable(p_uart_init->irq_num); uarte_instance->INTENSET = (UARTE_INTENSET_ENDRX_Set << UARTE_INTENSET_ENDRX_Pos); uarte_instance->INTENSET = (UARTE_INTENSET_ENDTX_Set << UARTE_INTENSET_ENDTX_Pos); uarte_instance->ENABLE = (UARTE_ENABLE_ENABLE_Enabled << UARTE_ENABLE_ENABLE_Pos); uarte_instance->EVENTS_ENDTX = 0; uarte_instance->EVENTS_ENDRX = 0; } hal_uart_error_t hal_uart_char_write(NRF_UART_Type * p_instance, uint8_t ch) { NRF_UARTE_Type * uarte_instance = (NRF_UARTE_Type *)p_instance; uarte_instance->ERRORSRC = 0; static volatile uint8_t m_tx_buf[TX_BUF_SIZE]; (void)m_tx_buf; uarte_instance->INTENCLR = (UARTE_INTENSET_ENDTX_Set << UARTE_INTENSET_ENDTX_Pos); m_tx_buf[0] = ch; uarte_instance->TXD.PTR = (uint32_t)((uint8_t *)m_tx_buf); uarte_instance->TXD.MAXCNT = (uint32_t)sizeof(m_tx_buf); uarte_instance->TASKS_STARTTX = 1; while((0 == uarte_instance->EVENTS_ENDTX)); uarte_instance->EVENTS_ENDTX = 0; uarte_instance->TASKS_STOPTX = 1; uarte_instance->INTENSET = (UARTE_INTENSET_ENDTX_Set << UARTE_INTENSET_ENDTX_Pos); return uarte_instance->ERRORSRC; } hal_uart_error_t hal_uart_char_read(NRF_UART_Type * p_instance, uint8_t * ch) { NRF_UARTE_Type * uarte_instance = (NRF_UARTE_Type *)p_instance; uarte_instance->ERRORSRC = 0; static volatile uint8_t m_rx_buf[RX_BUF_SIZE]; uarte_instance->INTENCLR = (UARTE_INTENSET_ENDRX_Set << UARTE_INTENSET_ENDRX_Pos); uarte_instance->RXD.PTR = (uint32_t)((uint8_t *)m_rx_buf); uarte_instance->RXD.MAXCNT = (uint32_t)sizeof(m_rx_buf); uarte_instance->TASKS_STARTRX = 1; while ((0 == uarte_instance->EVENTS_ENDRX)); uarte_instance->EVENTS_ENDRX = 0; uarte_instance->TASKS_STOPRX = 1; uarte_instance->INTENSET = (UARTE_INTENSET_ENDRX_Set << UARTE_INTENSET_ENDRX_Pos); *ch = (uint8_t)m_rx_buf[0]; return uarte_instance->ERRORSRC; } #endif // HAL_UARTE_MODULE_ENABLED