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author | Marti Bolivar <mbolivar@leaflabs.com> | 2012-05-31 17:17:06 -0400 |
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committer | Marti Bolivar <mbolivar@leaflabs.com> | 2012-05-31 17:24:41 -0400 |
commit | 014f9a0545556f2e0d4fb3faba5607e59e1e97ad (patch) | |
tree | af63cbb2d5c744f107094dd98f3e07ad2c80ae5c /wirish/stm32f2/wirish_digital.cpp | |
parent | 40c13f67e21215639b5de3bcf58955abb8f0c6ce (diff) | |
download | librambutan-014f9a0545556f2e0d4fb3faba5607e59e1e97ad.tar.gz librambutan-014f9a0545556f2e0d4fb3faba5607e59e1e97ad.zip |
examples/blinky.cpp works on F2.
Only OUTPUT mode is tested; any other modes might work, but no
guarantees.
Bring back:
- wirish/wirish_digital.cpp
- wirish/cxxabi-compat.cpp
- wirish/wirish_time.cpp
Add new:
- wirish/stm32f1/wirish_digital.cpp
- wirish/stm32f2/wirish_digital.cpp
Move pinMode() from wirish/wirish_digital.cpp into the file by the
same basename in wirish/stm32f1. This implementation is tied to
F1. Add an F2 implementation in wirish/stm32f2/wirish_digital.cpp.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
Diffstat (limited to 'wirish/stm32f2/wirish_digital.cpp')
-rw-r--r-- | wirish/stm32f2/wirish_digital.cpp | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/wirish/stm32f2/wirish_digital.cpp b/wirish/stm32f2/wirish_digital.cpp new file mode 100644 index 0000000..a67111d --- /dev/null +++ b/wirish/stm32f2/wirish_digital.cpp @@ -0,0 +1,130 @@ +/****************************************************************************** + * The MIT License + * + * Copyright (c) 2012 LeafLabs, LLC. + * + * Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, copy, + * modify, merge, publish, distribute, sublicense, and/or sell copies + * of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + *****************************************************************************/ + +/* + * STM32F2 implementations for basic GPIO functionality. + */ + +#include <wirish/io.h> + +#include <libmaple/gpio.h> +#include <libmaple/timer.h> + +#include <wirish/boards.h> + +void pinMode(uint8 pin, WiringPinMode w_mode) { + if (pin >= BOARD_NR_GPIO_PINS) { + return; + } + + gpio_pin_mode mode; + // People always do the silly pin-toggle speed benchmark, so let's + // accomodate them: + unsigned flags = GPIO_MODEF_SPEED_HIGH; + bool pwm = false; + switch(w_mode) { + case OUTPUT: + mode = GPIO_MODE_OUTPUT; + break; + case OUTPUT_OPEN_DRAIN: + mode = GPIO_MODE_OUTPUT; + flags |= GPIO_MODEF_TYPE_OD; + break; + case INPUT: + case INPUT_FLOATING: + mode = GPIO_MODE_INPUT; + break; + case INPUT_ANALOG: + mode = GPIO_MODE_ANALOG; + break; + case INPUT_PULLUP: + mode = GPIO_MODE_INPUT; + flags |= GPIO_MODEF_PUPD_PU; + break; + case INPUT_PULLDOWN: + mode = GPIO_MODE_INPUT; + flags |= GPIO_MODEF_PUPD_PD; + break; + case PWM: + mode = GPIO_MODE_AF; + pwm = true; + break; + case PWM_OPEN_DRAIN: + mode = GPIO_MODE_AF; + flags |= GPIO_MODEF_TYPE_OD; + pwm = true; + break; + default: + ASSERT(0); // Can't happen + return; + } + + const stm32_pin_info *info = &PIN_MAP[pin]; + + if (pwm) { + /* If enabling PWM, tell the timer to do PWM, and tell the pin + * to listen to the right timer. */ + ASSERT(info->timer_device != NULL); + if (info->timer_device == NULL) { + return; + } + gpio_af timer_af; + /* TODO make this code a <libmaple/timer.h> convenience + * routine for series that support GPIO alternate + * functions. */ + switch(info->timer_device->clk_id) { + case RCC_TIMER1: // fall-through + case RCC_TIMER2: + timer_af = GPIO_AF_TIM_1_2; + break; + case RCC_TIMER3: // fall-through + case RCC_TIMER4: // ... + case RCC_TIMER5: + timer_af = GPIO_AF_TIM_3_4_5; + break; + /* Timers 6 and 7 don't have any capture/compare, so they + * can't do PWM (and in fact have no AF values). */ + case RCC_TIMER8: // fall-through + case RCC_TIMER9: // ... + case RCC_TIMER10: // ... + case RCC_TIMER11: + timer_af = GPIO_AF_TIM_8_9_10_11; + break; + case RCC_TIMER12: // fall-through + case RCC_TIMER13: // ... + case RCC_TIMER14: + timer_af = GPIO_AF_CAN_1_2_TIM_12_13_14; + break; + default: + ASSERT(0); // Can't happen + return; + } + timer_set_mode(info->timer_device, info->timer_channel, TIMER_PWM); + gpio_set_af(info->gpio_device, info->gpio_bit, timer_af); + } else { + gpio_set_modef(info->gpio_device, info->gpio_bit, mode, flags); + } +} |