From bcce98da54b047a15ef0abf41e0c7794f29f0439 Mon Sep 17 00:00:00 2001 From: Uwe Hermann Date: Thu, 30 Dec 2010 01:52:44 +0100 Subject: Move STM32 examples to examples/stm32 subdir. --- examples/other/i2c_stts75_sensor/Makefile | 25 --- examples/other/i2c_stts75_sensor/README | 13 -- .../other/i2c_stts75_sensor/i2c_stts75_sensor.c | 146 ---------------- .../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 ----- 6 files changed, 440 deletions(-) delete mode 100644 examples/other/i2c_stts75_sensor/Makefile delete mode 100644 examples/other/i2c_stts75_sensor/README delete mode 100644 examples/other/i2c_stts75_sensor/i2c_stts75_sensor.c delete mode 100644 examples/other/i2c_stts75_sensor/i2c_stts75_sensor.ld delete mode 100644 examples/other/i2c_stts75_sensor/stts75.c delete mode 100644 examples/other/i2c_stts75_sensor/stts75.h (limited to 'examples/other/i2c_stts75_sensor') diff --git a/examples/other/i2c_stts75_sensor/Makefile b/examples/other/i2c_stts75_sensor/Makefile deleted file mode 100644 index 32ee066..0000000 --- a/examples/other/i2c_stts75_sensor/Makefile +++ /dev/null @@ -1,25 +0,0 @@ -## -## 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 - -OBJS = stts75.o - -include ../../Makefile.include - diff --git a/examples/other/i2c_stts75_sensor/README b/examples/other/i2c_stts75_sensor/README deleted file mode 100644 index 91e3ff6..0000000 --- a/examples/other/i2c_stts75_sensor/README +++ /dev/null @@ -1,13 +0,0 @@ ------------------------------------------------------------------------------- -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. - 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 - * - * 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" - -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; -} diff --git a/examples/other/i2c_stts75_sensor/i2c_stts75_sensor.ld b/examples/other/i2c_stts75_sensor/i2c_stts75_sensor.ld deleted file mode 100644 index a1e9de5..0000000 --- a/examples/other/i2c_stts75_sensor/i2c_stts75_sensor.ld +++ /dev/null @@ -1,31 +0,0 @@ -/* - * 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 deleted file mode 100644 index 319394f..0000000 --- a/examples/other/i2c_stts75_sensor/stts75.c +++ /dev/null @@ -1,186 +0,0 @@ -/* - * 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 reg32; - - /* 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. */ - reg32 = 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 reg32; - - /* 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. */ - reg32 = 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 reg32; - - /* 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. */ - reg32 = 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 reg32; - 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. */ - reg32 = 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. */ - reg32 = 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 deleted file mode 100644 index e07fe23..0000000 --- a/examples/other/i2c_stts75_sensor/stts75.h +++ /dev/null @@ -1,39 +0,0 @@ -/* - * 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