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Diffstat (limited to 'thirdparty/nRF5_SDK_15.0.0_a53641a/components/drivers_ext/nrf6350/nrf6350.c')
| -rw-r--r-- | thirdparty/nRF5_SDK_15.0.0_a53641a/components/drivers_ext/nrf6350/nrf6350.c | 305 |
1 files changed, 305 insertions, 0 deletions
diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/drivers_ext/nrf6350/nrf6350.c b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/drivers_ext/nrf6350/nrf6350.c new file mode 100644 index 0000000..af73cd1 --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/drivers_ext/nrf6350/nrf6350.c @@ -0,0 +1,305 @@ +/** + * Copyright (c) 2008 - 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 "nrf6350.h" +#include "nrf_delay.h" +#include "twi_master.h" + +/*lint ++flb "Enter library region" */ + +#define DDRAM_ADR 0x80 //!< Write to DDRAM AC +#define DDRAM_WR 0x40 //!< Write to DDRAM +#define FUNC_SET 0x00 //!< Enter LCD Function settings +#define LCD_ADDR 0x3E //!< LCD display adr +#define JS_ADDR 0x3F //!< Joystick adr + +#define X 0 //!< X direction in pos 0 of joystick array +#define Y 1 //!< Y direction in pos 1 of joystick array + + +//static void nrf6350_nrf6350_lcd_set_instruction(uint8_t instr); + +#define BUF_LEN 32 //!< LCD data buffer length +static uint8_t data_buffer[BUF_LEN]; //!< LCD data buffer +static uint8_t empty_str[18] = {DDRAM_WR, ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' '}; //!< Blank line + + +static bool nrf6350_lcd_set_instruction(uint8_t instr) +{ + nrf_delay_us(10000); + data_buffer[0] = FUNC_SET; + data_buffer[1] = instr; + return twi_master_transfer(LCD_ADDR << 1, data_buffer, 2, TWI_ISSUE_STOP); +} + +bool nrf6350_lcd_clear(void) +{ + nrf_delay_us(10000); + data_buffer[0] = FUNC_SET; + data_buffer[1] = (uint8_t)(DDRAM_ADR + LCD_UPPER_LINE); + if (!twi_master_transfer(LCD_ADDR << 1, data_buffer, 2, TWI_ISSUE_STOP)) + return false; + if (!twi_master_transfer(LCD_ADDR << 1, empty_str, 18, TWI_ISSUE_STOP)) + { + return false; + } + data_buffer[1] = DDRAM_ADR + LCD_LOWER_LINE; + if (!twi_master_transfer(LCD_ADDR << 1, data_buffer, 2, TWI_ISSUE_STOP)) + return false; + if (!twi_master_transfer(LCD_ADDR << 1, empty_str, 18, TWI_ISSUE_STOP)) + return false; + return true; +} + +bool nrf6350_lcd_set_contrast(uint8_t contrast) +{ + nrf_delay_us(10000); + data_buffer[0] = FUNC_SET; + data_buffer[1] = 0x70 | contrast; + return twi_master_transfer(LCD_ADDR << 1, data_buffer, 2, TWI_ISSUE_STOP); +} + +bool nrf6350_lcd_on(void) +{ + nrf_delay_us(10000); + data_buffer[0] = FUNC_SET; + data_buffer[1] = 0x0C; + return twi_master_transfer(LCD_ADDR << 1, data_buffer, 2, TWI_ISSUE_STOP); +} + +bool nrf6350_lcd_off(void) +{ + nrf_delay_us(10000); + data_buffer[0] = FUNC_SET; + data_buffer[1] = 0x08; + return twi_master_transfer(LCD_ADDR << 1, data_buffer, 2, TWI_ISSUE_STOP); +} + +bool nrf6350_lcd_init(void) +{ + if (!twi_master_init()) + { + return false; + } + + // Sometimes the first command doesn't get through, so we'll try + // sending non-important "wake up" command first and don't care if it fails. + (void)nrf6350_lcd_wake_up(); + + if (!nrf6350_lcd_set_instruction(0x38)) // Function set. + return false; + if (!nrf6350_lcd_set_instruction(0x39)) // Choose two-line mode. + return false; + if (!nrf6350_lcd_set_instruction(0x14)) // Internal OSC frequency. + return false; + if (!nrf6350_lcd_set_contrast(LCD_CONTRAST_HIGH)) // Contrast set (low byte). + return false; + if (!nrf6350_lcd_set_instruction(0x5F)) // Power/ICON control/. + return false; + if (!nrf6350_lcd_set_instruction(0x6A)) // Follower control. + return false; + nrf_delay_us(200000); // Need to wait 200ms here according to datasheet. + if (!nrf6350_lcd_on()) // Display ON. + return false; + if (!nrf6350_lcd_clear()) // Clear display. + return false; + return nrf6350_lcd_set_instruction(0x06); // Entry mode set. +} + +bool nrf6350_lcd_write_string(const char *p_text, uint8_t size, uint8_t line, uint8_t pos) +{ + uint8_t i; + + data_buffer[0] = FUNC_SET; + data_buffer[1] = DDRAM_ADR + (pos + line); + if (!twi_master_transfer(LCD_ADDR << 1, data_buffer, 2, TWI_ISSUE_STOP)) + return false; + if (!twi_master_transfer(LCD_ADDR << 1, empty_str, 18 - pos, TWI_ISSUE_STOP)) + return false; + data_buffer[0] = FUNC_SET; + data_buffer[1] = DDRAM_ADR + (pos + line); + if (!twi_master_transfer(LCD_ADDR << 1, data_buffer, 2, TWI_ISSUE_STOP)) + return false; + data_buffer[0] = DDRAM_WR; + for (i=0;i<size;i++) + { + if (i == LCD_LLEN) + break; + data_buffer[i + 1] = (uint8_t) * p_text++; + } + return twi_master_transfer(LCD_ADDR << 1, data_buffer, i + 1, TWI_ISSUE_STOP); +} + +bool nrf6350_js_get_value(int8_t * val) +{ + uint8_t js_data; + + if (!twi_master_transfer(JS_ADDR << 1 | TWI_READ_BIT, data_buffer, 1, TWI_ISSUE_STOP)) + return false; + js_data = (~data_buffer[0] & 0x1D); // Select the useful bits. + + if ((js_data & 0x01) != 0) // Check joystick position. + { + val[X] = -1; + } + else if ((js_data & 0x10) != 0) + { + val[X] = 1; + } + else + { + val[X] = 0; + } + + if ((js_data & 0x04) != 0) + { + val[Y] = 1; + } + else if ((js_data & 0x08) != 0) + { + val[Y] = -1; + } + else + { + val[Y] = 0; + } + return true; +} + + +bool nrf6350_js_get_status(uint8_t * js_state) +{ + uint8_t js_data; + + if (!twi_master_transfer(JS_ADDR << 1 | TWI_READ_BIT, &js_data, 1, TWI_ISSUE_STOP)) + { + return false; + } + js_data = ~js_data; + *js_state = js_data & 0x1F; + return true; +} + +/** @brief First time communication with the development kit nRF6350 display will fail, this + * returns false on timeout instead of attempting to recover. + */ +static bool nrf6350_lcd_write_without_recovery(uint8_t * data, + uint8_t data_length, + bool issue_stop_condition) +{ + uint32_t timeout = 20000; /* max loops to wait for EVENTS_TXDSENT event*/ + + if (data_length == 0) + { + /* Return false for requesting data of size 0 */ + return false; + } + + NRF_TWI1->TXD = *data++; + NRF_TWI1->TASKS_STARTTX = 1; + + /** @snippet [TWI HW master write] */ + while (true) + { + while (NRF_TWI1->EVENTS_TXDSENT == 0 && (--timeout)) + { + // Do nothing. + } + + if (timeout == 0) + { + NRF_TWI1->EVENTS_STOPPED = 0; + NRF_TWI1->TASKS_STOP = 1; + + /* Wait until stop sequence is sent */ + while (NRF_TWI1->EVENTS_STOPPED == 0) + { + // Do nothing. + } + + /* Timeout before receiving event*/ + return false; + } + + NRF_TWI1->EVENTS_TXDSENT = 0; + if (--data_length == 0) + { + break; + } + + NRF_TWI1->TXD = *data++; + } + /** @snippet [TWI HW master write] */ + + if (issue_stop_condition) + { + NRF_TWI1->EVENTS_STOPPED = 0; + NRF_TWI1->TASKS_STOP = 1; + + /* Wait until stop sequence is sent */ + while (NRF_TWI1->EVENTS_STOPPED == 0) + { + // Do nothing. + } + } + return true; +} + +/** @brief Function for transfer by twi_master. + */ +bool nrf6350_lcd_wake_up(void) +{ + uint8_t address = (LCD_ADDR << 1); + uint8_t dummy_data[] = {0, 0, 0, 0}; + uint8_t dummy_data_length = 4; + bool issue_stop_condition = 0; + bool transfer_succeeded = false; + + NRF_TWI1->ADDRESS = (address >> 1); + + transfer_succeeded = nrf6350_lcd_write_without_recovery(dummy_data, + dummy_data_length, + issue_stop_condition); + + NRF_TWI1->EVENTS_ERROR = 0; + + return transfer_succeeded; +} + +/*lint --flb "Leave library region" */ |