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Diffstat (limited to 'examples/other/i2c_stts75_sensor/i2c_stts75_sensor.c')
-rw-r--r--examples/other/i2c_stts75_sensor/i2c_stts75_sensor.c146
1 files changed, 0 insertions, 146 deletions
diff --git a/examples/other/i2c_stts75_sensor/i2c_stts75_sensor.c b/examples/other/i2c_stts75_sensor/i2c_stts75_sensor.c
deleted file mode 100644
index 1227fd1..0000000
--- a/examples/other/i2c_stts75_sensor/i2c_stts75_sensor.c
+++ /dev/null
@@ -1,146 +0,0 @@
-/*
- * This file is part of the libopenstm32 project.
- *
- * Copyright (C) 2010 Thomas Otto <tommi@viadmin.org>
- *
- * 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 <http://www.gnu.org/licenses/>.
- */
-
-#include <libopenstm32/rcc.h>
-#include <libopenstm32/flash.h>
-#include <libopenstm32/gpio.h>
-#include <libopenstm32/usart.h>
-#include <libopenstm32/i2c.h>
-#include "stts75.h"
-
-void usart_setup(void)
-{
- /* Enable clocks for GPIO port A (for GPIO_USART1_TX) and USART1. */
- rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN);
- rcc_peripheral_enable_clock(&RCC_APB2ENR, 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, 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, RCC_APB1ENR_I2C2EN);
- rcc_peripheral_enable_clock(&RCC_APB2ENR, 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;
-
- rcc_clock_setup_in_hse_16mhz_out_72mhz();
- 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;
-}