diff options
Diffstat (limited to 'libmaple/usart.c')
| -rw-r--r-- | libmaple/usart.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/libmaple/usart.c b/libmaple/usart.c index 296a1fb..d08d3cf 100644 --- a/libmaple/usart.c +++ b/libmaple/usart.c @@ -36,6 +36,8 @@ #define USART1_BASE 0x40013800 #define USART2_BASE 0x40004400 #define USART3_BASE 0x40004800 +#define UART4_BASE 0x40004C00 // High-density devices only (Maple Native) +#define UART5_BASE 0x40005000 // High-density devices only (Maple Native) #define USART_UE BIT(13) #define USART_M BIT(12) @@ -61,6 +63,18 @@ 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 }; /* usart interrupt handlers */ @@ -75,6 +89,14 @@ void USART2_IRQHandler(void) { void USART3_IRQHandler(void) { rb_insert(&usart_dev_table[USART3].rb, (uint8)(((usart_port*)(USART3_BASE))->DR)); } +#if NR_USART >= 5 +void UART4_IRQHandler(void) { + rb_insert(&usart_dev_table[UART4].rb, (uint8)(((usart_port*)(UART4_BASE))->DR)); +} +void UART5_IRQHandler(void) { + rb_insert(&usart_dev_table[UART5].rb, (uint8)(((usart_port*)(UART5_BASE))->DR)); +} +#endif /** * @brief Enable a USART in single buffer transmission mode, multibuffer @@ -83,6 +105,7 @@ void USART3_IRQHandler(void) { * @param baud Baud rate to be set at */ void usart_init(uint8 usart_num, uint32 baud) { + ASSERT(usart_num <= NR_USART); usart_port *port; ring_buffer *ring_buf; @@ -121,6 +144,18 @@ void usart_init(uint8 usart_num, uint32 baud) { port->CR1 |= USART_UE; } +/** + * @brief Turn off all USARTs. + */ +void usart_disable_all() { + usart_disable(1); + usart_disable(2); + usart_disable(3); + #if NR_USART >= 5 + usart_disable(4); + usart_disable(5); + #endif +} /** * @brief Turn off a USART. |