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author | Marti Bolivar <mbolivar@leaflabs.com> | 2011-02-15 22:29:45 -0500 |
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committer | Marti Bolivar <mbolivar@leaflabs.com> | 2011-02-16 01:17:21 -0500 |
commit | 2764748208816043a3149eae3a433d02325a1a36 (patch) | |
tree | cc5afb0af0c6f1d2282db08d3dad1dae9b4d33e6 /libmaple/usart.c | |
parent | 1fb0e0d727089e23d4b30e1efba5410dc4b4da14 (diff) | |
parent | 620740bf1986311041a40bd2992d1b549f84b2ba (diff) | |
download | librambutan-2764748208816043a3149eae3a433d02325a1a36.tar.gz librambutan-2764748208816043a3149eae3a433d02325a1a36.zip |
Merge branch 'nzmichaelh-master' into master.
This provides DMA, IWDG, PWR, and BKP support, and fixes several bugs.
Conflicts:
libmaple/adc.h
libmaple/libmaple.h
libmaple/ring_buffer.h
Diffstat (limited to 'libmaple/usart.c')
-rw-r--r-- | libmaple/usart.c | 64 |
1 files changed, 39 insertions, 25 deletions
diff --git a/libmaple/usart.c b/libmaple/usart.c index e63e8f6..44a5c92 100644 --- a/libmaple/usart.c +++ b/libmaple/usart.c @@ -61,45 +61,59 @@ struct usart_dev usart_dev_table[] = { .rcc_dev_num = RCC_USART3, .nvic_dev_num = NVIC_USART3 }, - /* - #if NR_USART >= 5 - [UART4] = { - .base = (usart_port*)UART4_BASE, - .rcc_dev_num = RCC_UART4, - .nvic_dev_num = NVIC_UART4 - }, - [UART5] = { - .base = (usart_port*)UART5_BASE, - .rcc_dev_num = RCC_UART5, - .nvic_dev_num = NVIC_UART5 - }, - #endif - */ +#if NR_USART >= 5 + /* TODO test */ + [UART4] = { + .base = (usart_port*)UART4_BASE, + .rcc_dev_num = RCC_UART4, + .nvic_dev_num = NVIC_UART4 + }, + [UART5] = { + .base = (usart_port*)UART5_BASE, + .rcc_dev_num = RCC_UART5, + .nvic_dev_num = NVIC_UART5 + }, +#endif }; -/* usart interrupt handlers */ +/* + * Usart interrupt handlers. + */ + +static inline void usart_irq(int usart_num) { +#ifdef USART_SAFE_INSERT + /* Ignore old bytes if the user defines USART_SAFE_INSERT. */ + rb_safe_insert(&(usart_dev_table[usart_num].rb), + (uint8)((usart_dev_table[usart_num].base)->DR)); +#else + /* By default, push bytes around in the ring buffer. */ + rb_push_insert(&(usart_dev_table[usart_num].rb), + (uint8)((usart_dev_table[usart_num].base)->DR)); +#endif +} + +/* TODO: Check the disassembly for the following functions to make + sure GCC inlined properly. */ + void USART1_IRQHandler(void) { - rb_insert(&(usart_dev_table[USART1].rb), - (uint8)(((usart_port*)(USART1_BASE))->DR)); + usart_irq(USART1); } void USART2_IRQHandler(void) { - rb_insert(&(usart_dev_table[USART2].rb), - (uint8)(((usart_port*)(USART2_BASE))->DR)); + usart_irq(USART2); } void USART3_IRQHandler(void) { - rb_insert(&usart_dev_table[USART3].rb, - (uint8)(((usart_port*)(USART3_BASE))->DR)); + usart_irq(USART3); } + #if NR_USART >= 5 void UART4_IRQHandler(void) { - rb_insert(&usart_dev_table[UART4].rb, - (uint8)(((usart_port*)(UART4_BASE))->DR)); + usart_irq(UART4); } + void UART5_IRQHandler(void) { - rb_insert(&usart_dev_table[UART5].rb, - (uint8)(((usart_port*)(UART5_BASE))->DR)); + usart_irq(UART5); } #endif |