diff options
Diffstat (limited to 'ports/nrf/hal/hal_twi.c')
| -rw-r--r-- | ports/nrf/hal/hal_twi.c | 133 |
1 files changed, 0 insertions, 133 deletions
diff --git a/ports/nrf/hal/hal_twi.c b/ports/nrf/hal/hal_twi.c deleted file mode 100644 index 65d729c94..000000000 --- a/ports/nrf/hal/hal_twi.c +++ /dev/null @@ -1,133 +0,0 @@ -/* - * This file is part of the MicroPython project, http://micropython.org/ - * - * The MIT License (MIT) - * - * Copyright (c) 2017 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 "mphalport.h" -#include "hal_twi.h" - -#ifdef HAL_TWI_MODULE_ENABLED - -static const uint32_t hal_twi_frequency_lookup[] = { - TWI_FREQUENCY_FREQUENCY_K100, // 100 kbps - TWI_FREQUENCY_FREQUENCY_K250, // 250 kbps - TWI_FREQUENCY_FREQUENCY_K400, // 400 kbps -}; - -void hal_twi_master_init(NRF_TWI_Type * p_instance, hal_twi_init_t const * p_twi_init) { - -#if NRF52840_XXAA - p_instance->PSEL.SCL = p_twi_init->scl_pin->pin; - p_instance->PSEL.SDA = p_twi_init->sda_pin->pin; - p_instance->PSEL.SCL |= (p_twi_init->scl_pin->port << TWI_PSEL_SCL_PORT_Pos); - p_instance->PSEL.SDA |= (p_twi_init->sda_pin->port << TWI_PSEL_SDA_PORT_Pos); -#else - p_instance->PSELSCL = p_twi_init->scl_pin->pin; - p_instance->PSELSDA = p_twi_init->sda_pin->pin; -#endif - - p_instance->FREQUENCY = hal_twi_frequency_lookup[p_twi_init->freq]; - p_instance->ENABLE = (TWI_ENABLE_ENABLE_Enabled << TWI_ENABLE_ENABLE_Pos); -} -#include <stdio.h> -void hal_twi_master_tx(NRF_TWI_Type * p_instance, - uint8_t addr, - uint16_t transfer_size, - const uint8_t * tx_data, - bool stop) { - - uint16_t number_of_txd_bytes = 0; - - p_instance->ADDRESS = addr; - - p_instance->EVENTS_TXDSENT = 0; - - p_instance->TXD = tx_data[number_of_txd_bytes]; - p_instance->TASKS_STARTTX = 1; - - while (number_of_txd_bytes < transfer_size) { - // wait for the transaction complete - while (p_instance->EVENTS_TXDSENT == 0) { - ; - } - - number_of_txd_bytes++; - - // TODO: This could go one byte out of bound. - p_instance->TXD = tx_data[number_of_txd_bytes]; - p_instance->EVENTS_TXDSENT = 0; - } - - - if (stop) { - p_instance->EVENTS_STOPPED = 0; - p_instance->TASKS_STOP = 1; - - while (p_instance->EVENTS_STOPPED == 0) { - ; - } - } -} - -void hal_twi_master_rx(NRF_TWI_Type * p_instance, - uint8_t addr, - uint16_t transfer_size, - uint8_t * rx_data, - bool stop) { - - uint16_t number_of_rxd_bytes = 0; - - p_instance->ADDRESS = addr; - - p_instance->EVENTS_RXDREADY = 0; - - p_instance->TASKS_STARTRX = 1; - - while (number_of_rxd_bytes < transfer_size) { - // wait for the transaction complete - while (p_instance->EVENTS_RXDREADY == 0) { - ; - } - - rx_data[number_of_rxd_bytes] = p_instance->RXD; - p_instance->EVENTS_RXDREADY = 0; - - number_of_rxd_bytes++; - } - - if (stop) { - p_instance->EVENTS_STOPPED = 0; - p_instance->TASKS_STOP = 1; - - while (p_instance->EVENTS_STOPPED == 0) { - ; - } - } -} - -void hal_twi_slave_init(NRF_TWI_Type * p_instance, hal_twi_init_t const * p_twi_init) { -} - -#endif // HAL_TWI_MODULE_ENABLED - |