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/stm32/obldc/Makefile | 56 ++++++++ examples/stm32/obldc/can/Makefile | 23 +++ examples/stm32/obldc/can/can.c | 216 ++++++++++++++++++++++++++++ examples/stm32/obldc/can/can.ld | 31 ++++ examples/stm32/obldc/led/Makefile | 23 +++ examples/stm32/obldc/led/led.c | 67 +++++++++ examples/stm32/obldc/led/led.ld | 31 ++++ examples/stm32/obldc/systick/Makefile | 23 +++ examples/stm32/obldc/systick/systick.c | 90 ++++++++++++ examples/stm32/obldc/systick/systick.ld | 31 ++++ examples/stm32/obldc/usart/Makefile | 23 +++ examples/stm32/obldc/usart/usart.c | 91 ++++++++++++ examples/stm32/obldc/usart/usart.ld | 31 ++++ examples/stm32/obldc/usart_irq/Makefile | 25 ++++ examples/stm32/obldc/usart_irq/usart_irq.c | 126 ++++++++++++++++ examples/stm32/obldc/usart_irq/usart_irq.ld | 31 ++++ 16 files changed, 918 insertions(+) create mode 100644 examples/stm32/obldc/Makefile create mode 100644 examples/stm32/obldc/can/Makefile create mode 100644 examples/stm32/obldc/can/can.c create mode 100644 examples/stm32/obldc/can/can.ld create mode 100644 examples/stm32/obldc/led/Makefile create mode 100644 examples/stm32/obldc/led/led.c create mode 100644 examples/stm32/obldc/led/led.ld create mode 100644 examples/stm32/obldc/systick/Makefile create mode 100644 examples/stm32/obldc/systick/systick.c create mode 100644 examples/stm32/obldc/systick/systick.ld create mode 100644 examples/stm32/obldc/usart/Makefile create mode 100644 examples/stm32/obldc/usart/usart.c create mode 100644 examples/stm32/obldc/usart/usart.ld create mode 100644 examples/stm32/obldc/usart_irq/Makefile create mode 100644 examples/stm32/obldc/usart_irq/usart_irq.c create mode 100644 examples/stm32/obldc/usart_irq/usart_irq.ld (limited to 'examples/stm32/obldc') diff --git a/examples/stm32/obldc/Makefile b/examples/stm32/obldc/Makefile new file mode 100644 index 0000000..8014fce --- /dev/null +++ b/examples/stm32/obldc/Makefile @@ -0,0 +1,56 @@ +## +## This file is part of the libopenstm32 project. +## +## Copyright (C) 2010 Piotr Esden-Tempski +## +## 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 . +## + +# Be silent per default, but 'make V=1' will show all compiler calls. +ifneq ($(V),1) +Q := @ +# Do not print "Entering directory ...". +MAKEFLAGS += --no-print-directory +endif + +all: led systick usart can + +led: + @printf " BUILD examples/obldc/led\n" + $(Q)$(MAKE) -C led + +systick: + @printf " BUILD examples/obldc/systick\n" + $(Q)$(MAKE) -C systick + +usart: + @printf " BUILD examples/obldc/usart\n" + $(Q)$(MAKE) -C usart + +can: + @printf " BUILD examples/obldc/can\n" + $(Q)$(MAKE) -C can + +clean: + @printf " CLEAN examples/obldc/led\n" + $(Q)$(MAKE) -C led clean + @printf " CLEAN examples/obldc/systick\n" + $(Q)$(MAKE) -C systick clean + @printf " CLEAN examples/obldc/usart\n" + $(Q)$(MAKE) -C usart clean + @printf " CLEAN examples/obldc/can\n" + $(Q)$(MAKE) -C can clean + +.PHONY: led systick usart can + diff --git a/examples/stm32/obldc/can/Makefile b/examples/stm32/obldc/can/Makefile new file mode 100644 index 0000000..4d9fd57 --- /dev/null +++ b/examples/stm32/obldc/can/Makefile @@ -0,0 +1,23 @@ +## +## 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 = can + +include ../../Makefile.include + diff --git a/examples/stm32/obldc/can/can.c b/examples/stm32/obldc/can/can.c new file mode 100644 index 0000000..d96d1c9 --- /dev/null +++ b/examples/stm32/obldc/can/can.c @@ -0,0 +1,216 @@ +/* + * This file is part of the libopenstm32 project. + * + * Copyright (C) 2010 Thomas Otto + * Copyright (C) 2010 Piotr Esden-Tempski + * + * 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 + +struct can_tx_msg { + u32 std_id; + u32 ext_id; + u8 ide; + u8 rtr; + u8 dlc; + u8 data[8]; +}; + +struct can_rx_msg { + u32 std_id; + u32 ext_id; + u8 ide; + u8 rtr; + u8 dlc; + u8 data[8]; + u8 fmi; +}; + +struct can_tx_msg can_tx_msg; +struct can_rx_msg can_rx_msg; + +void gpio_setup(void) +{ + /* Enable GPIOA clock. */ + rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN); + + /* Enable GPIOB clock. */ + rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPBEN); + + gpio_set(GPIOA, GPIO6); /* LED0 off */ + gpio_set(GPIOA, GPIO7); /* LED1 off */ + gpio_set(GPIOB, GPIO0); /* LED2 off */ + gpio_set(GPIOB, GPIO1); /* LED3 off */ + + /* Set GPIO6/7 (in GPIO port A) to 'output push-pull' for the LEDs. */ + gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ, + GPIO_CNF_OUTPUT_PUSHPULL, GPIO6); + gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ, + GPIO_CNF_OUTPUT_PUSHPULL, GPIO7); + + /* Set GPIO6/7 (in GPIO port B) to 'output push-pull' for the LEDs. */ + gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_50_MHZ, + GPIO_CNF_OUTPUT_PUSHPULL, GPIO0); + gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_50_MHZ, + GPIO_CNF_OUTPUT_PUSHPULL, GPIO1); +} + +void systick_setup(void) +{ + /* 72MHz / 8 => 9000000 counts per second */ + systick_set_clocksource(STK_CTRL_CLKSOURCE_AHB_DIV8); + + /* 9000000/9000 = 1000 overflows per second - every 1ms one interrupt */ + systick_set_reload(9000); + + systick_interrupt_enable(); + + /* Start counting. */ + systick_counter_enable(); +} + +void can_setup(void) +{ + /* Enable peripheral clocks. */ + rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_AFIOEN); + rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN); + rcc_peripheral_enable_clock(&RCC_APB1ENR, RCC_APB1ENR_CANEN); + + /* Configure CAN pin: RX (input pull-up). */ + gpio_set_mode(GPIOA, GPIO_MODE_INPUT, + GPIO_CNF_INPUT_PULL_UPDOWN, GPIO_CAN_RX); + gpio_set(GPIOA, GPIO_CAN_RX); + + /* Configure CAN pin: TX. */ + gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ, + GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO_CAN_TX); + + /* NVIC setup. */ + nvic_enable_irq(NVIC_USB_LP_CAN_RX0_IRQ); + nvic_set_priority(NVIC_USB_LP_CAN_RX0_IRQ, 1); + + /* Reset CAN. */ + can_reset(CAN1); + + /* CAN cell init. */ + if (can_init(CAN1, + false, /* TTCM: Time triggered comm mode? */ + true, /* ABOM: Automatic bus-off management? */ + false, /* AWUM: Automatic wakeup mode? */ + false, /* NART: No automatic retransmission? */ + false, /* RFLM: Receive FIFO locked mode? */ + false, /* TXFP: Transmit FIFO priority? */ + CAN_BTR_SJW_1TQ, + CAN_BTR_TS1_3TQ, + CAN_BTR_TS2_4TQ, + 12)) /* BRP+1: Baud rate prescaler */ + { + gpio_set(GPIOA, GPIO6); /* LED0 off */ + gpio_set(GPIOA, GPIO7); /* LED1 off */ + gpio_set(GPIOB, GPIO0); /* LED2 off */ + gpio_clear(GPIOB, GPIO1); /* LED3 on */ + + /* Die because we failed to initialize. */ + while (1) + __asm__("nop"); + } + + /* CAN filter 0 init. */ + can_filter_id_mask_32bit_init(CAN1, + 0, /* Filter ID */ + 0, /* CAN ID */ + 0, /* CAN ID mask */ + 0, /* FIFO assignment (here: FIFO0) */ + true); /* Enable the filter. */ + + /* Enable CAN RX interrupt. */ + can_enable_irq(CAN1, CAN_IER_FMPIE0); +} + +void sys_tick_handler(void) +{ + static int temp32 = 0; + static u8 data[8] = {0, 1, 2, 0, 0, 0, 0, 0}; + + /* We call this handler every 1ms so 1000ms = 1s on/off. */ + if (++temp32 != 1000) + return; + + temp32 = 0; + + /* Transmit CAN frame. */ + data[0]++; + if (can_transmit(CAN1, + 0, /* (EX/ST)ID: CAN ID */ + false, /* IDE: CAN ID extended? */ + false, /* RTR: Request transmit? */ + 8, /* DLC: Data length */ + data) == -1) + { + gpio_set(GPIOA, GPIO6); /* LED0 off */ + gpio_set(GPIOA, GPIO7); /* LED1 off */ + gpio_clear(GPIOB, GPIO0); /* LED2 on */ + gpio_set(GPIOB, GPIO1); /* LED3 off */ + } +} + +void usb_lp_can_rx0_isr(void) +{ + u32 id, fmi; + bool ext, rtr; + u8 length, data[8]; + + can_receive(CAN1, 0, false, &id, &ext, &rtr, &fmi, &length, data); + + if (data[0] & 1) + gpio_clear(GPIOA, GPIO6); + else + gpio_set(GPIOA, GPIO6); + + if (data[0] & 2) + gpio_clear(GPIOA, GPIO7); + else + gpio_set(GPIOA, GPIO7); + + if (data[0] & 4) + gpio_clear(GPIOB, GPIO0); + else + gpio_set(GPIOB, GPIO0); + + if (data[0] & 8) + gpio_clear(GPIOB, GPIO1); + else + gpio_set(GPIOB, GPIO1); + + can_fifo_release(CAN1, 0); +} + +int main(void) +{ + rcc_clock_setup_in_hse_8mhz_out_72mhz(); + gpio_setup(); + can_setup(); + systick_setup(); + + while (1); /* Halt. */ + + return 0; +} diff --git a/examples/stm32/obldc/can/can.ld b/examples/stm32/obldc/can/can.ld new file mode 100644 index 0000000..a1e9de5 --- /dev/null +++ b/examples/stm32/obldc/can/can.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/stm32/obldc/led/Makefile b/examples/stm32/obldc/led/Makefile new file mode 100644 index 0000000..665cd45 --- /dev/null +++ b/examples/stm32/obldc/led/Makefile @@ -0,0 +1,23 @@ +## +## 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 = led + +include ../../Makefile.include + diff --git a/examples/stm32/obldc/led/led.c b/examples/stm32/obldc/led/led.c new file mode 100644 index 0000000..7784106 --- /dev/null +++ b/examples/stm32/obldc/led/led.c @@ -0,0 +1,67 @@ +/* + * This file is part of the libopenstm32 project. + * + * Copyright (C) 2009 Uwe Hermann + * Copyright (C) 2010 Piotr Esden-Tempski + * + * 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 + +/* Set STM32 to 72 MHz. */ +void clock_setup(void) +{ + rcc_clock_setup_in_hse_8mhz_out_72mhz(); + + /* Enable GPIOA clock. */ + rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN); + + /* Enable GPIOB clock. */ + rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPBEN); +} + +void gpio_setup(void) +{ + /* Set GPIO6 and 7 (in GPIO port A) to 'output push-pull'. */ + gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ, + GPIO_CNF_OUTPUT_PUSHPULL, GPIO6 | GPIO7); + + /* Set GPIO0 and 1 (in GPIO port B) to 'output push-pull'. */ + gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_50_MHZ, + GPIO_CNF_OUTPUT_PUSHPULL, GPIO0 | GPIO1); +} + +int main(void) +{ + int i; + + clock_setup(); + gpio_setup(); + + /* Blink the LEDs on the board. */ + while (1) { + gpio_toggle(GPIOA, GPIO6); /* LED on/off */ + for (i = 0; i < 800000; i++); /* Wait (needs -O0 CFLAGS). */ + gpio_toggle(GPIOA, GPIO7); /* LED on/off */ + for (i = 0; i < 800000; i++); /* Wait (needs -O0 CFLAGS). */ + gpio_toggle(GPIOB, GPIO0); /* LED on/off */ + for (i = 0; i < 800000; i++); /* Wait (needs -O0 CFLAGS). */ + gpio_toggle(GPIOB, GPIO1); /* LED on/off */ + for (i = 0; i < 800000; i++); /* Wait (needs -O0 CFLAGS). */ + } + + return 0; +} diff --git a/examples/stm32/obldc/led/led.ld b/examples/stm32/obldc/led/led.ld new file mode 100644 index 0000000..c8683d5 --- /dev/null +++ b/examples/stm32/obldc/led/led.ld @@ -0,0 +1,31 @@ +/* + * 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 . + */ + +/* Linker script for Open-BLDC (STM32F103CBT6, 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/stm32/obldc/systick/Makefile b/examples/stm32/obldc/systick/Makefile new file mode 100644 index 0000000..f08d085 --- /dev/null +++ b/examples/stm32/obldc/systick/Makefile @@ -0,0 +1,23 @@ +## +## 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 = systick + +include ../../Makefile.include + diff --git a/examples/stm32/obldc/systick/systick.c b/examples/stm32/obldc/systick/systick.c new file mode 100644 index 0000000..c469c1c --- /dev/null +++ b/examples/stm32/obldc/systick/systick.c @@ -0,0 +1,90 @@ +/* + * This file is part of the libopenstm32 project. + * + * Copyright (C) 2010 Thomas Otto + * Copyright (C) 2010 Piotr Esden-Tempski + * + * 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 + +u32 temp32; + +void gpio_setup(void) +{ + /* Enable GPIOA clock. */ + rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN); + + /* Enable GPIOB clock. */ + rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPBEN); + + gpio_set(GPIOA, GPIO6); /* LED0 off */ + gpio_set(GPIOA, GPIO7); /* LED1 off */ + gpio_set(GPIOB, GPIO0); /* LED2 off */ + gpio_set(GPIOB, GPIO1); /* LED3 off */ + + /* Set GPIO6/7 (in GPIO port A) to 'output push-pull' for the LEDs. */ + gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ, + GPIO_CNF_OUTPUT_PUSHPULL, GPIO6); + gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ, + GPIO_CNF_OUTPUT_PUSHPULL, GPIO7); + + /* Set GPIO6/7 (in GPIO port B) to 'output push-pull' for the LEDs. */ + gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_50_MHZ, + GPIO_CNF_OUTPUT_PUSHPULL, GPIO0); + gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_50_MHZ, + GPIO_CNF_OUTPUT_PUSHPULL, GPIO1); +} + +void sys_tick_handler(void) +{ + temp32++; + + /* We call this handler every 1ms so 1000ms = 1s on/off. */ + if (temp32 == 1000) { + gpio_toggle(GPIOA, GPIO6); /* LED2 on/off */ + temp32 = 0; + } +} + +int main(void) +{ + rcc_clock_setup_in_hse_8mhz_out_72mhz(); + gpio_setup(); + + gpio_clear(GPIOA, GPIO7); /* LED1 on */ + gpio_set(GPIOA, GPIO6); /* LED2 off */ + + temp32 = 0; + + /* 72MHz / 8 => 9000000 counts per second */ + systick_set_clocksource(STK_CTRL_CLKSOURCE_AHB_DIV8); + + /* 9000000/9000 = 1000 overflows per second - every 1ms one interrupt */ + systick_set_reload(9000); + + systick_interrupt_enable(); + + /* Start counting. */ + systick_counter_enable(); + + while (1); /* Halt. */ + + return 0; +} diff --git a/examples/stm32/obldc/systick/systick.ld b/examples/stm32/obldc/systick/systick.ld new file mode 100644 index 0000000..0d79751 --- /dev/null +++ b/examples/stm32/obldc/systick/systick.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 STM32F103CBT6 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/stm32/obldc/usart/Makefile b/examples/stm32/obldc/usart/Makefile new file mode 100644 index 0000000..75050cd --- /dev/null +++ b/examples/stm32/obldc/usart/Makefile @@ -0,0 +1,23 @@ +## +## 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 = usart + +include ../../Makefile.include + diff --git a/examples/stm32/obldc/usart/usart.c b/examples/stm32/obldc/usart/usart.c new file mode 100644 index 0000000..8712181 --- /dev/null +++ b/examples/stm32/obldc/usart/usart.c @@ -0,0 +1,91 @@ +/* + * 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 . + */ + +#include +#include +#include + +void clock_setup(void) +{ + rcc_clock_setup_in_hse_8mhz_out_72mhz(); + + /* Enable GPIOA clock. For LED gpio's */ + rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN); + + /* Enable clocks for GPIO port B (for GPIO_USART1_TX) and USART1. */ + rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPBEN); + rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_AFIOEN); + rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_USART1EN); +} + +void usart_setup(void) +{ + + /* Setup GPIO6 (in GPIO port A) to 'output push-pull' for led use. */ + gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ, + GPIO_CNF_OUTPUT_PUSHPULL, + GPIO6); + + AFIO_MAPR |= AFIO_MAPR_USART1_REMAP; + + /* Setup GPIO pin GPIO_USART3_TX/GPIO10 on GPIO port B for transmit. */ + gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_50_MHZ, + GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO_USART1_RE_TX); + + /* Setup UART parameters. */ + usart_set_baudrate(USART1, 230400); + usart_set_databits(USART1, 8); + usart_set_stopbits(USART1, USART_STOPBITS_1); + usart_set_mode(USART1, USART_MODE_TX); + 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) +{ + /* Set GPIO12 (in GPIO port C) to 'output push-pull'. */ + gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ, + GPIO_CNF_OUTPUT_PUSHPULL, GPIO6); +} + +int main(void) +{ + int i, j = 0, c = 0; + + clock_setup(); + gpio_setup(); + usart_setup(); + + /* Blink the LED (PC12) on the board with every transmitted byte. */ + while (1) { + gpio_toggle(GPIOA, GPIO6); /* LED on/off */ + usart_send_blocking(USART1, c + '0'); /* Send one byte on USART3. */ + c = (c == 9) ? 0 : c + 1; /* Increment c. */ + if ((j++ % 80) == 0) { /* Newline after line full. */ + usart_send_blocking(USART1, '\r'); + usart_send_blocking(USART1, '\n'); + } + for (i = 0; i < 80000; i++); /* Wait (needs -O0 CFLAGS). */ + } + + return 0; +} diff --git a/examples/stm32/obldc/usart/usart.ld b/examples/stm32/obldc/usart/usart.ld new file mode 100644 index 0000000..c8683d5 --- /dev/null +++ b/examples/stm32/obldc/usart/usart.ld @@ -0,0 +1,31 @@ +/* + * 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 . + */ + +/* Linker script for Open-BLDC (STM32F103CBT6, 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/stm32/obldc/usart_irq/Makefile b/examples/stm32/obldc/usart_irq/Makefile new file mode 100644 index 0000000..eba2bb5 --- /dev/null +++ b/examples/stm32/obldc/usart_irq/Makefile @@ -0,0 +1,25 @@ +## +## 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 = usart_irq + +OOCD_BOARD = open-bldc + +include ../../Makefile.include + diff --git a/examples/stm32/obldc/usart_irq/usart_irq.c b/examples/stm32/obldc/usart_irq/usart_irq.c new file mode 100644 index 0000000..5be24d2 --- /dev/null +++ b/examples/stm32/obldc/usart_irq/usart_irq.c @@ -0,0 +1,126 @@ +/* + * 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 . + */ + +#include +#include +#include +#include + +void clock_setup(void) +{ + rcc_clock_setup_in_hse_8mhz_out_72mhz(); + + /* Enable GPIOA clock. For LED gpio's */ + rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN); + + /* Enable clocks for GPIO port B (for GPIO_USART1_TX) and USART1. */ + rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPBEN); + rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_AFIOEN); + rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_USART1EN); +} + +void usart_setup(void) +{ + + /* Enable the USART1 interrupt. */ + nvic_enable_irq(NVIC_USART1_IRQ); + + /* enable USART1 pin software remapping */ + AFIO_MAPR |= AFIO_MAPR_USART1_REMAP; + + /* Setup GPIO pin GPIO_USART1_RE_TX on GPIO port B for transmit. */ + gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_50_MHZ, + GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO_USART1_RE_TX); + + /* Setup GPIO pin GPIO_USART1_RE_RX on GPIO port B for receive. */ + gpio_set_mode(GPIOB, GPIO_MODE_INPUT, + GPIO_CNF_INPUT_FLOAT, GPIO_USART1_RE_RX); + + /* Setup UART parameters. */ + usart_set_baudrate(USART1, 230400); + usart_set_databits(USART1, 8); + usart_set_stopbits(USART1, USART_STOPBITS_1); + usart_set_parity(USART1, USART_PARITY_NONE); + usart_set_flow_control(USART1, USART_FLOWCONTROL_NONE); + usart_set_mode(USART1, USART_MODE_TX_RX); + + /* Enable USART1 Receive interrupt. */ + USART_CR1(USART1) |= USART_CR1_RXNEIE; + + /* Finally enable the USART. */ + usart_enable(USART1); +} + +void gpio_setup(void) +{ + + gpio_set(GPIOA, GPIO6 | GPIO7); + + /* Setup GPIO6 and 7 (in GPIO port A) for led use. */ + gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ, + GPIO_CNF_OUTPUT_PUSHPULL, + GPIO6 | GPIO7); + +} + +void usart1_isr(void) +{ + static u8 data = 'A'; + + /* Check if we were called because of RXNE. */ + if ((USART_SR(USART1) & USART_SR_RXNE) != 0) { + + /* Indicate that we got data. */ + gpio_toggle(GPIOA, GPIO6); + + /* Retrieve the data from the peripheral. */ + data = usart_recv(USART1); + + /* Enable transmit interrupt so it sends back the data. */ + USART_CR1(USART1) |= USART_CR1_TXEIE; + } + + /* Check if we were called because of TXE. */ + if ((USART_SR(USART1) & USART_SR_TXE) != 0) { + + /* Indicate that we are sending out data. */ + gpio_toggle(GPIOA, GPIO7); + + /* Put data into the transmit register */ + usart_send(USART1, data); + + /* Disable the TXE interrupt as we don't need it anymore */ + USART_CR1(USART1) &= ~USART_CR1_TXEIE; + } +} + +int main(void) +{ + + clock_setup(); + gpio_setup(); + usart_setup(); + + /* Wait forever and do nothing. */ + while (1) { + __asm("nop"); + } + + return 0; +} diff --git a/examples/stm32/obldc/usart_irq/usart_irq.ld b/examples/stm32/obldc/usart_irq/usart_irq.ld new file mode 100644 index 0000000..c8683d5 --- /dev/null +++ b/examples/stm32/obldc/usart_irq/usart_irq.ld @@ -0,0 +1,31 @@ +/* + * 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 . + */ + +/* Linker script for Open-BLDC (STM32F103CBT6, 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 + -- cgit v1.2.3