diff options
Diffstat (limited to 'libmaple/include')
| -rw-r--r-- | libmaple/include/libmaple/stm32.h | 43 |
1 files changed, 39 insertions, 4 deletions
diff --git a/libmaple/include/libmaple/stm32.h b/libmaple/include/libmaple/stm32.h index 097a016..94fb689 100644 --- a/libmaple/include/libmaple/stm32.h +++ b/libmaple/include/libmaple/stm32.h @@ -70,14 +70,36 @@ extern "C" { #include <series/stm32.h> /* Ensure the series header isn't broken. */ -#if (!defined(STM32_PCLK1) || !defined(STM32_PCLK2) || \ - !defined(STM32_MCU_SERIES) || !defined(STM32_NR_INTERRUPTS) || \ - !defined(STM32_NR_GPIO_PORTS) || !defined(STM32_DELAY_US_MULT) || \ - !defined(STM32_SRAM_END) || !defined(STM32_HAVE_FSMC) || \ +#if (!defined(STM32_PCLK1) || \ + !defined(STM32_PCLK2) || \ + !defined(STM32_MCU_SERIES) || \ + !defined(STM32_NR_INTERRUPTS) || \ + !defined(STM32_NR_GPIO_PORTS) || \ + !defined(STM32_TIMER_MASK) || \ + !defined(STM32_DELAY_US_MULT) || \ + !defined(STM32_SRAM_END) || \ + !defined(STM32_HAVE_FSMC) || \ !defined(STM32_HAVE_USB)) #error "Bad STM32F1 configuration. Check <series/stm32.h> header for your MCU." #endif +/* + * Derived macros + */ + +/* FIXME [0.0.13] add this to ReST API page */ +/** + * @brief Statically determine whether a timer is present. + * + * Given a constant timer number n (starting from 1), this macro has a + * nonzero value exactly when TIMERn is available. + */ +#define STM32_HAVE_TIMER(n) (STM32_TIMER_MASK & (1 << (n))) + +/* + * Doxygen for functionality provided by series header. + */ + #ifdef __DOXYGEN__ /* @@ -128,6 +150,19 @@ extern "C" { */ #define STM32_NR_GPIO_PORTS +/* FIXME [0.0.13] add this to ReST API page */ +/** + * @brief Bitmask of timers available on the MCU. + * + * That is, if TIMERn is available, then STM32_TIMER_MASK & (1 << n) + * will be nonzero. For example, a nonzero value of "STM32_TIMER_MASK + * & 0x2" means TIMER1 is available. + * + * A bitmask is necessary as some STM32 MCUs have "holes" in the range + * of available timers. + */ +#define STM32_TIMER_MASK + /** * @brief Multiplier to convert microseconds into loop iterations * in delay_us(). |