From 6b4549da8ceed736c85195f3bd16ded40131a29c Mon Sep 17 00:00:00 2001 From: Andrew Kannan Date: Wed, 13 Feb 2019 11:03:26 -0500 Subject: Add Satisfaction75 to QMK, Enable EEPROM on stm32f072 (#5094) * Add stm32f072 base ck4x4 to handwired * add prints * Save these tries * Save changes again * Working hadron oled * OLEd working but ws2812b still iffy: * save another try * Encoder feature + OLED * RTC code * Implement clock setting mode * Whitespace * Encoder hooked up to working LED PWM code * Add missing files * eeprom changes * Save changes * Move i2c master * Move satisfaction75 under cannonkeys * Set proper default folder * Revert some core changes * Undo paved iris changes * Reorganize code for maintainability and prep for new features * Add starting code for clock OLED mode * Clock set mode finished * Add custom encoder modes * Actually add VIA keymap * Gate to only 072 * fix gate for only 072 * Update header guards and includes * Update i2c selection strategy * Update board.c to handle software reset to DFU --- keyboards/cannonkeys/satisfaction75/i2c_master.c | 116 +++++++++++++++++++++++ 1 file changed, 116 insertions(+) create mode 100644 keyboards/cannonkeys/satisfaction75/i2c_master.c (limited to 'keyboards/cannonkeys/satisfaction75/i2c_master.c') diff --git a/keyboards/cannonkeys/satisfaction75/i2c_master.c b/keyboards/cannonkeys/satisfaction75/i2c_master.c new file mode 100644 index 000000000..a19dbcc9f --- /dev/null +++ b/keyboards/cannonkeys/satisfaction75/i2c_master.c @@ -0,0 +1,116 @@ +/* Copyright 2018 Jack Humbert + * Copyright 2018 Yiancar + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* This library is only valid for STM32 processors. + * This library follows the convention of the AVR i2c_master library. + * As a result addresses are expected to be already shifted (addr << 1). + * I2CD1 is the default driver which corresponds to pins B6 and B7. This + * can be changed. + * Please ensure that HAL_USE_I2C is TRUE in the halconf.h file and that + * STM32_I2C_USE_I2C1 is TRUE in the mcuconf.h file. Pins B6 and B7 are used + * but using any other I2C pins should be trivial. + */ + +#include "i2c_master.h" +#include "quantum.h" +#include +#include +#include "chtypes.h" +#include "ch.h" + +static uint8_t i2c_address; + +// This configures the I2C clock to 400khz assuming a 48Mhz clock +// For more info : https://www.st.com/en/embedded-software/stsw-stm32126.html +static const I2CConfig i2cconfig = { + STM32_TIMINGR_PRESC(0x00U) | + STM32_TIMINGR_SCLDEL(0x03U) | STM32_TIMINGR_SDADEL(0x01U) | + STM32_TIMINGR_SCLH(0x03U) | STM32_TIMINGR_SCLL(0x09U), + 0, + 0 +}; + +__attribute__ ((weak)) +void i2c_init(void) +{ + // Try releasing special pins for a short time + palSetPadMode(GPIOB, 6, PAL_MODE_INPUT); + palSetPadMode(GPIOB, 7, PAL_MODE_INPUT); + + chThdSleepMilliseconds(10); + + palSetPadMode(GPIOB, 6, PAL_MODE_ALTERNATE(1) | PAL_STM32_OTYPE_OPENDRAIN); + palSetPadMode(GPIOB, 7, PAL_MODE_ALTERNATE(1) | PAL_STM32_OTYPE_OPENDRAIN); + + //i2cInit(); //This is invoked by halInit() so no need to redo it. +} + +// This is usually not needed +uint8_t i2c_start(uint8_t address) +{ + i2c_address = address; + i2cStart(&I2C_DRIVER, &i2cconfig); + return 0; +} + +uint8_t i2c_transmit(uint8_t address, uint8_t* data, uint16_t length, uint16_t timeout) +{ + msg_t status = MSG_OK; + + i2c_address = address; + i2cStart(&I2C_DRIVER, &i2cconfig); + i2cAcquireBus(&I2C_DRIVER); + status = i2cMasterTransmitTimeout(&I2C_DRIVER, (i2c_address >> 1), data, length, 0, 0, MS2ST(timeout)); + i2cReleaseBus(&I2C_DRIVER); + return status; +} + +uint8_t i2c_receive(uint8_t address, uint8_t* data, uint16_t length, uint16_t timeout) +{ + i2c_address = address; + i2cStart(&I2C_DRIVER, &i2cconfig); + return i2cMasterReceiveTimeout(&I2C_DRIVER, (i2c_address >> 1), data, length, MS2ST(timeout)); +} + +uint8_t i2c_writeReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length, uint16_t timeout) +{ + i2c_address = devaddr; + i2cStart(&I2C_DRIVER, &i2cconfig); + + uint8_t complete_packet[length + 1]; + for(uint8_t i = 0; i < length; i++) + { + complete_packet[i+1] = data[i]; + } + complete_packet[0] = regaddr; + + return i2cMasterTransmitTimeout(&I2C_DRIVER, (i2c_address >> 1), complete_packet, length + 1, 0, 0, MS2ST(timeout)); +} + +uint8_t i2c_readReg(uint8_t devaddr, uint8_t* regaddr, uint8_t* data, uint16_t length, uint16_t timeout) +{ + i2c_address = devaddr; + i2cStart(&I2C_DRIVER, &i2cconfig); + return i2cMasterTransmitTimeout(&I2C_DRIVER, (i2c_address >> 1), regaddr, 1, data, length, MS2ST(timeout)); +} + +// This is usually not needed. It releases the driver to allow pins to become GPIO again. +uint8_t i2c_stop(uint16_t timeout) +{ + i2cStop(&I2C_DRIVER); + return 0; +} -- cgit v1.2.3