From 46e5ed202a16f29775f06430c0ce8b1878121ed9 Mon Sep 17 00:00:00 2001 From: Uwe Hermann Date: Fri, 5 Mar 2010 22:35:29 +0100 Subject: Add i2c_stts75_sensor example. Thanks Thomas Otto for the patch! --- examples/Makefile | 10 +- examples/other/Makefile | 39 +++++ examples/other/i2c_stts75_sensor/Makefile | 95 +++++++++++ examples/other/i2c_stts75_sensor/README | 49 ++++++ .../other/i2c_stts75_sensor/i2c_stts75_sensor.c | 152 +++++++++++++++++ .../other/i2c_stts75_sensor/i2c_stts75_sensor.ld | 31 ++++ examples/other/i2c_stts75_sensor/stts75.c | 186 +++++++++++++++++++++ examples/other/i2c_stts75_sensor/stts75.h | 39 +++++ 8 files changed, 599 insertions(+), 2 deletions(-) create mode 100644 examples/other/Makefile create mode 100644 examples/other/i2c_stts75_sensor/Makefile create mode 100644 examples/other/i2c_stts75_sensor/README create mode 100644 examples/other/i2c_stts75_sensor/i2c_stts75_sensor.c create mode 100644 examples/other/i2c_stts75_sensor/i2c_stts75_sensor.ld create mode 100644 examples/other/i2c_stts75_sensor/stts75.c create mode 100644 examples/other/i2c_stts75_sensor/stts75.h (limited to 'examples') diff --git a/examples/Makefile b/examples/Makefile index 9f26efa..6714bc9 100644 --- a/examples/Makefile +++ b/examples/Makefile @@ -25,7 +25,7 @@ ifneq ($(V),1) Q := @ endif -all: stm32-h103 mb525 +all: stm32-h103 mb525 other stm32-h103: @printf " BUILD examples/stm32-h103\n" @@ -35,11 +35,17 @@ mb525: @printf " BUILD examples/mb525\n" $(Q)$(MAKE) -C mb525 +other: + @printf " BUILD examples/other\n" + $(Q)$(MAKE) -C other + clean: @printf " CLEAN examples/stm32-h103\n" $(Q)$(MAKE) -C stm32-h103 clean @printf " CLEAN examples/mb525\n" $(Q)$(MAKE) -C mb525 clean + @printf " CLEAN examples/other\n" + $(Q)$(MAKE) -C other clean -.PHONY: stm32-h103 mb525 clean +.PHONY: stm32-h103 mb525 other clean diff --git a/examples/other/Makefile b/examples/other/Makefile new file mode 100644 index 0000000..d9284f4 --- /dev/null +++ b/examples/other/Makefile @@ -0,0 +1,39 @@ +## +## This file is part of the libopenstm32 project. +## +## Copyright (C) 2010 Uwe Hermann +## +## 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 3 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 . +## + +# Do not print "Entering directory ...". +MAKEFLAGS += --no-print-directory + +# Be silent per default, but 'make V=1' will show all compiler calls. +ifneq ($(V),1) +Q := @ +endif + +all: i2c_stts75_sensor + +i2c_stts75_sensor: + @printf " BUILD i2c_stts75_sensor\n" + $(Q)$(MAKE) -C i2c_stts75_sensor + +clean: + @printf " CLEAN i2c_stts75_sensor\n" + $(Q)$(MAKE) -C i2c_stts75_sensor clean + +.PHONY: i2c_stts75_sensor clean + diff --git a/examples/other/i2c_stts75_sensor/Makefile b/examples/other/i2c_stts75_sensor/Makefile new file mode 100644 index 0000000..6b4fa69 --- /dev/null +++ b/examples/other/i2c_stts75_sensor/Makefile @@ -0,0 +1,95 @@ +## +## This file is part of the libopenstm32 project. +## +## Copyright (C) 2009 Uwe Hermann +## +## 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 3 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 . +## + +BINARY = i2c_stts75_sensor + +# PREFIX ?= arm-none-eabi +PREFIX ?= arm-elf +CC = $(PREFIX)-gcc +LD = $(PREFIX)-ld +OBJCOPY = $(PREFIX)-objcopy +OBJDUMP = $(PREFIX)-objdump +# Uncomment this line if you want to use the installed (not local) library. +# TOOLCHAIN_DIR = `dirname \`which $(CC)\``/../$(PREFIX) +TOOLCHAIN_DIR = ../../.. +CFLAGS = -O0 -g -Wall -Wextra -I$(TOOLCHAIN_DIR)/include -fno-common \ + -mcpu=cortex-m3 -mthumb +LDSCRIPT = $(BINARY).ld +LDFLAGS = -L$(TOOLCHAIN_DIR)/lib -T$(LDSCRIPT) -nostartfiles +OBJS = $(BINARY).o stts75.o + +OPENOCD_BASE = /usr +OPENOCD = $(OPENOCD_BASE)/bin/openocd +OPENOCD_SCRIPTS = $(OPENOCD_BASE)/share/openocd/scripts +OPENOCD_FLASHER = $(OPENOCD_SCRIPTS)/interface/jtagkey.cfg +OPENOCD_BOARD = $(OPENOCD_SCRIPTS)/target/stm32.cfg + +# Be silent per default, but 'make V=1' will show all compiler calls. +ifneq ($(V),1) +Q := @ +NULL := 2>/dev/null +endif + +all: images + +images: $(BINARY) + @printf " OBJCOPY $(BINARY).bin\n" + $(Q)$(OBJCOPY) -Obinary $(BINARY) $(BINARY).bin + @printf " OBJCOPY $(BINARY).hex\n" + $(Q)$(OBJCOPY) -Oihex $(BINARY) $(BINARY).hex + @printf " OBJCOPY $(BINARY).srec\n" + $(Q)$(OBJCOPY) -Osrec $(BINARY) $(BINARY).srec + @printf " OBJDUMP $(BINARY).list\n" + $(Q)$(OBJDUMP) -S $(BINARY) > $(BINARY).list + +$(BINARY): $(OBJS) $(LDSCRIPT) + @printf " LD $(subst $(shell pwd)/,,$(@))\n" + $(Q)$(LD) $(LDFLAGS) -o $(BINARY) $(OBJS) -lopenstm32 + +%.o: %.c Makefile + @printf " CC $(subst $(shell pwd)/,,$(@))\n" + $(Q)$(CC) $(CFLAGS) -o $@ -c $< + +clean: + @printf " CLEAN $(subst $(shell pwd)/,,$(OBJS))\n" + $(Q)rm -f *.o + @printf " CLEAN $(BINARY)\n" + $(Q)rm -f $(BINARY) + @printf " CLEAN $(BINARY).bin\n" + $(Q)rm -f $(BINARY).bin + @printf " CLEAN $(BINARY).hex\n" + $(Q)rm -f $(BINARY).hex + @printf " CLEAN $(BINARY).srec\n" + $(Q)rm -f $(BINARY).srec + @printf " CLEAN $(BINARY).list\n" + $(Q)rm -f $(BINARY).list + +flash: images + @printf " FLASH $(BINARY).bin\n" + @# IMPORTANT: Don't use "resume", only "reset" will work correctly! + $(Q)$(OPENOCD) -s $(OPENOCD_SCRIPTS) \ + -f $(OPENOCD_FLASHER) \ + -f $(OPENOCD_BOARD) \ + -c "init" -c "reset halt" \ + -c "flash write_image erase $(BINARY).hex" \ + -c "reset" \ + -c "shutdown" $(NULL) + +.PHONY: images clean + diff --git a/examples/other/i2c_stts75_sensor/README b/examples/other/i2c_stts75_sensor/README new file mode 100644 index 0000000..9d775af --- /dev/null +++ b/examples/other/i2c_stts75_sensor/README @@ -0,0 +1,49 @@ +------------------------------------------------------------------------------ +README +------------------------------------------------------------------------------ + +This example program sends some characters on USART1. +Afterwards it connects to an STTS75 sensor (ST LM75 compatible) +at adress A0/1/2=0 and sets reverse polarity, 26 degree Tos and Thyst. +It reads out the temperature and submits the temperature over USART1 in +binary format (ASCII 0/1). + +The terminal settings for the receiving device/PC are 115200 8n1. + + +Building +-------- + + $ make + +Running 'make' on the top-level libopenstm32 directory will automatically +also build this example. Or you can build the library "manually" and +then run 'make' in this directory. + +You may want to override the toolchain (e.g., arm-elf or arm-none-eabi): + + $ PREFIX=arm-none-eabi make + +For a more verbose build you can use + + $ make V=1 + + +Flashing +-------- + +You can flash the generated code using OpenOCD: + + $ make flash + +Or you can do the same manually via: + + $ openocd -f interface/jtagkey-tiny.cfg -f target/stm32.cfg + $ telnet localhost 4444 + > reset halt + > flash write_image erase i2c_stts75_sensor.hex + > reset + +Replace the "jtagkey-tiny.cfg" with whatever JTAG device you are using, and/or +replace "stm.cfg" with your respective config file. + diff --git a/examples/other/i2c_stts75_sensor/i2c_stts75_sensor.c b/examples/other/i2c_stts75_sensor/i2c_stts75_sensor.c new file mode 100644 index 0000000..748e12b --- /dev/null +++ b/examples/other/i2c_stts75_sensor/i2c_stts75_sensor.c @@ -0,0 +1,152 @@ +/* + * This file is part of the libopenstm32 project. + * + * Copyright (C) 2010 Thomas Otto + * + * 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 3 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 . + */ + +#include +#include +#include +#include +#include +#include "stts75.h" + +/* Set STM32 to 72 MHz. */ +void clock_setup(void) +{ + rcc_clock_setup_in_hse_8mhz_out_72mhz(); +} + +void usart_setup(void) +{ + /* Enable clocks for GPIO port A (for GPIO_USART1_TX) and USART1. */ + rcc_peripheral_enable_clock(&RCC_APB2ENR, IOPAEN); + rcc_peripheral_enable_clock(&RCC_APB2ENR, USART1EN); + + /* Setup GPIO pin GPIO_USART1_TX/GPIO9 on GPIO port A for transmit. */ + gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ, + GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO_USART1_TX); + + /* Setup UART parameters. */ + usart_set_baudrate(USART1, 115200); + usart_set_databits(USART1, 8); + usart_set_stopbits(USART1, USART_STOPBITS_1); + usart_set_mode(USART1, USART_MODE_TX_RX); + usart_set_parity(USART1, USART_PARITY_NONE); + usart_set_flow_control(USART1, USART_FLOWCONTROL_NONE); + + /* Finally enable the USART. */ + usart_enable(USART1); +} + +void gpio_setup(void) +{ + /* Enable GPIOB clock. */ + rcc_peripheral_enable_clock(&RCC_APB2ENR, IOPBEN); + + /* Set GPIO6/7 (in GPIO port B) to 'output push-pull' for the LEDs. */ + gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_2_MHZ, + GPIO_CNF_OUTPUT_PUSHPULL, GPIO6); + gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_2_MHZ, + GPIO_CNF_OUTPUT_PUSHPULL, GPIO7); +} + +void i2c_setup(void) +{ + /* Enable clocks for I2C2 and AFIO. */ + rcc_peripheral_enable_clock(&RCC_APB1ENR, I2C2EN); + rcc_peripheral_enable_clock(&RCC_APB2ENR, AFIOEN); + + /* Set alternate functions for the SCL and SDA pins of I2C2. */ + gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_50_MHZ, + GPIO_CNF_OUTPUT_ALTFN_OPENDRAIN, + GPIO_I2C2_SCL | GPIO_I2C2_SDA); + + /* Disable the I2C before changing any configuration. */ + i2c_peripheral_disable(I2C2); + + /* APB1 is running at 36MHz. */ + i2c_set_clock_frequency(I2C2, I2C_CR2_FREQ_36MHZ); + + /* 400KHz - I2C Fast Mode */ + i2c_set_fast_mode(I2C2); + + /* + * fclock for I2C is 36MHz APB2 -> cycle time 28ns, low time at 400KHz + * incl trise -> Thigh= 1600ns; CCR= tlow/tcycle= 0x1C,9; + * datasheet suggests 0x1e. + */ + i2c_set_ccr(I2C2, 0x1e); + + /* + * fclock for I2C is 36MHz -> cycle time 28ns, rise time for + * 400KHz => 300ns and 100KHz => 1000ns; 300ns/28ns = 10; + * incremented by 1 -> 11. + */ + i2c_set_trise(I2C2, 0x0b); + + /* + * This is our slave address - needed only if we want to receive from + * other masters. + */ + i2c_set_own_7bit_slave_address(I2C2, 0x32); + + /* If everything is configured -> enable the peripheral. */ + i2c_peripheral_enable(I2C2); +} + +int main(void) +{ + int i = 0; + u16 temperature; + + clock_setup(); + gpio_setup(); + usart_setup(); + i2c_setup(); + + gpio_clear(GPIOB, GPIO7); /* LED1 on */ + gpio_set(GPIOB, GPIO6); /* LED2 off */ + + /* Send a message on USART1. */ + usart_send(USART1, 's'); + usart_send(USART1, 't'); + usart_send(USART1, 'm'); + usart_send(USART1, '\r'); + usart_send(USART1, '\n'); + + stts75_write_config(I2C2, STTS75_SENSOR0); + stts75_write_temp_os(I2C2, STTS75_SENSOR0, 0x1a00); /* 26 degrees */ + stts75_write_temp_hyst(I2C2, STTS75_SENSOR0, 0x1a00); + temperature = stts75_read_temperature(I2C2, STTS75_SENSOR0); + + /* Send the temperature as binary over USART1. */ + for (i = 15; i >= 0 ; i--) { + if (temperature & (1 << i)) + usart_send(USART1, '1'); + else + usart_send(USART1, '0'); + } + + usart_send(USART1, '\r'); + usart_send(USART1, '\n'); + + gpio_clear(GPIOB, GPIO6); /* LED2 on */ + + while(1); /* Halt. */ + + return 0; +} diff --git a/examples/other/i2c_stts75_sensor/i2c_stts75_sensor.ld b/examples/other/i2c_stts75_sensor/i2c_stts75_sensor.ld new file mode 100644 index 0000000..a1e9de5 --- /dev/null +++ b/examples/other/i2c_stts75_sensor/i2c_stts75_sensor.ld @@ -0,0 +1,31 @@ +/* + * This file is part of the libopenstm32 project. + * + * Copyright (C) 2010 Thomas Otto + * + * 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 3 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 . + */ + +/* Linker script for an STM32F103RBT6 board (128K flash, 20K RAM). */ + +/* Define memory regions. */ +MEMORY +{ + rom (rx) : ORIGIN = 0x08000000, LENGTH = 128K + ram (rwx) : ORIGIN = 0x20000000, LENGTH = 20K +} + +/* Include the common ld script from libopenstm32. */ +INCLUDE libopenstm32.ld + diff --git a/examples/other/i2c_stts75_sensor/stts75.c b/examples/other/i2c_stts75_sensor/stts75.c new file mode 100644 index 0000000..69aa4be --- /dev/null +++ b/examples/other/i2c_stts75_sensor/stts75.c @@ -0,0 +1,186 @@ +/* + * This file is part of the libopenstm32 project. + * + * Copyright (C) 2010 Thomas Otto + * + * 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 3 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 . + */ + +#include +#include "stts75.h" + +void stts75_write_config(u32 i2c, u8 sensor) +{ + u32 tempreg; + + /* Send START condition. */ + i2c_send_start(i2c); + + /* Waiting for START is send and switched to master mode. */ + while (!((I2C_SR1(i2c) & I2C_SR1_SB) + & (I2C_SR2(i2c) & (I2C_SR2_MSL | I2C_SR2_BUSY)))); + + /* Send destination address. */ + i2c_send_7bit_address(i2c, sensor, I2C_WRITE); + + /* Waiting for address is transferred. */ + while (!(I2C_SR1(i2c) & I2C_SR1_ADDR)); + + /* Cleaning ADDR condition sequence. */ + tempreg = I2C_SR2(i2c); + + /* Sending the data. */ + i2c_send_data(i2c, 0x1); /* stts75 config register */ + while (!(I2C_SR1(i2c) & I2C_SR1_BTF)); /* Await ByteTransferedFlag. */ + i2c_send_data(i2c, 0x4); /* pol reverse - LED glows if temp is below Tos/Thyst */ + while (!(I2C_SR1(i2c) & (I2C_SR1_BTF | I2C_SR1_TxE))); + + /* Send STOP condition. */ + i2c_send_stop(i2c); +} + +void stts75_write_temp_os(u32 i2c, u8 sensor, u16 temp_os) +{ + u32 tempreg; + + /* Send START condition. */ + i2c_send_start(i2c); + + /* Waiting for START is send and switched to master mode. */ + while (!((I2C_SR1(i2c) & I2C_SR1_SB) + & (I2C_SR2(i2c) & (I2C_SR2_MSL | I2C_SR2_BUSY)))); + + /* Send destination address. */ + i2c_send_7bit_address(i2c, sensor, I2C_WRITE); + + /* Waiting for address is transferred. */ + while (!(I2C_SR1(i2c) & I2C_SR1_ADDR)); + + /* Cleaning ADDR condition sequence. */ + tempreg = I2C_SR2(i2c); + + /* Sending the data. */ + i2c_send_data(i2c, 0x3); /* OvertemperatureShutdown register */ + while (!(I2C_SR1(i2c) & I2C_SR1_BTF)); + i2c_send_data(i2c, (u8)(temp_os >> 8)); /* MSB */ + while (!(I2C_SR1(i2c) & I2C_SR1_BTF)); + i2c_send_data(i2c, (u8)(temp_os & 0xff00)); /* LSB */ + while (!(I2C_SR1(i2c) & (I2C_SR1_BTF | I2C_SR1_TxE))); /* After the last byte we have to wait for TxE too. */ + + /* Send STOP condition. */ + i2c_send_stop(i2c); +} + +void stts75_write_temp_hyst(u32 i2c, u8 sensor, u16 temp_hyst) +{ + u32 tempreg; + + /* Send START condition. */ + i2c_send_start(i2c); + + /* Waiting for START is send and therefore switched to master mode. */ + while (!((I2C_SR1(i2c) & I2C_SR1_SB) + & (I2C_SR2(i2c) & (I2C_SR2_MSL | I2C_SR2_BUSY)))); + + /* Say to what address we want to talk to. */ + i2c_send_7bit_address(i2c, sensor, I2C_WRITE); + + /* Waiting for address is transferred. */ + while (!(I2C_SR1(i2c) & I2C_SR1_ADDR)); + + /* Cleaning ADDR condition sequence. */ + tempreg = I2C_SR2(i2c); + + /* Sending the data. */ + i2c_send_data(i2c, 0x2); /* TemperatureHysteresis register */ + while (!(I2C_SR1(i2c) & I2C_SR1_BTF)); + i2c_send_data(i2c, (u8)(temp_hyst >> 8)); /* MSB */ + while (!(I2C_SR1(i2c) & I2C_SR1_BTF)); + i2c_send_data(i2c, (u8)(temp_hyst & 0xff00)); /* LSB */ + while (!(I2C_SR1(i2c) & (I2C_SR1_BTF | I2C_SR1_TxE))); /* After the last byte we have to wait for TxE too. */ + + /* Send STOP condition. */ + i2c_send_stop(i2c); +} + +u16 stts75_read_temperature(u32 i2c, u8 sensor) +{ + u32 tempreg; + u16 temperature; + + /* Send START condition. */ + i2c_send_start(i2c); + + /* Waiting for START is send and switched to master mode. */ + while (!((I2C_SR1(i2c) & I2C_SR1_SB) + & (I2C_SR2(i2c) & (I2C_SR2_MSL | I2C_SR2_BUSY)))); + + /* Say to what address we want to talk to. */ + /* Yes, WRITE is correct - for selecting register in STTS75. */ + i2c_send_7bit_address(i2c, sensor, I2C_WRITE); + + /* Waiting for address is transferred. */ + while (!(I2C_SR1(i2c) & I2C_SR1_ADDR)); + + /* Cleaning ADDR condition sequence. */ + tempreg = I2C_SR2(i2c); + + i2c_send_data(i2c, 0x0); /* temperature register */ + while (!(I2C_SR1(i2c) & (I2C_SR1_BTF|I2C_SR1_TxE))); + + /* + * Now we transferred that we want to ACCESS the temperature register. + * Now we send another START condition (repeated START) and then + * transfer the destination but with flag READ. + */ + + /* Send START condition. */ + i2c_send_start(i2c); + + /* Waiting for START is send and switched to master mode. */ + while (!((I2C_SR1(i2c) & I2C_SR1_SB) + & (I2C_SR2(i2c) & (I2C_SR2_MSL | I2C_SR2_BUSY)))); + + /* Say to what address we want to talk to. */ + i2c_send_7bit_address(i2c, sensor, I2C_READ); + + /* 2-byte receive is a special case. See datasheet POS bit. */ + I2C_CR1(i2c) |= (I2C_CR1_POS | I2C_CR1_ACK); + + /* Waiting for address is transferred. */ + while (!(I2C_SR1(i2c) & I2C_SR1_ADDR)); + + /* Cleaning ADDR condition sequence. */ + tempreg = I2C_SR2(i2c); + + /* Cleaning I2C_SR1_ACK. */ + I2C_CR1(i2c) &= ~ I2C_CR1_ACK; + + /* Now the slave should begin to send us the first byte. Await BTF. */ + while (!(I2C_SR1(i2c) & I2C_SR1_BTF)); + temperature = (u16)(I2C_DR(i2c) << 8); /* MSB */ + + /* + * Yes they mean it: we have to generate the STOP condition before + * saving the 1st byte. + */ + I2C_CR1(i2c) |= I2C_CR1_STOP; + + temperature |= I2C_DR(i2c); /* LSB */ + + /* Original state. */ + I2C_CR1(i2c) &= ~I2C_CR1_POS; + + return temperature; +} diff --git a/examples/other/i2c_stts75_sensor/stts75.h b/examples/other/i2c_stts75_sensor/stts75.h new file mode 100644 index 0000000..e07fe23 --- /dev/null +++ b/examples/other/i2c_stts75_sensor/stts75.h @@ -0,0 +1,39 @@ +/* + * This file is part of the libopenstm32 project. + * + * Copyright (C) 2010 Thomas Otto + * + * 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 3 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 . + */ + +#ifndef STTS75_H +#define STTS75_H + +#include + +#define STTS75_SENSOR0 0x48 +#define STTS75_SENSOR1 0x49 +#define STTS75_SENSOR2 0x4a +#define STTS75_SENSOR3 0x4b +#define STTS75_SENSOR4 0x4c +#define STTS75_SENSOR5 0x4d +#define STTS75_SENSOR6 0x4e +#define STTS75_SENSOR7 0x4f + +void stts75_write_config(u32 i2c, u8 sensor); +void stts75_write_temp_os(u32 i2c, u8 sensor, u16 temp_os); +void stts75_write_temp_hyst(u32 i2c, u8 sensor, u16 temp_hyst); +u16 stts75_read_temperature(u32 i2c, u8 sensor); + +#endif -- cgit v1.2.3