diff options
Diffstat (limited to '03-refactor/include/usart.h')
| -rw-r--r-- | 03-refactor/include/usart.h | 219 |
1 files changed, 0 insertions, 219 deletions
diff --git a/03-refactor/include/usart.h b/03-refactor/include/usart.h deleted file mode 100644 index 265ac2d..0000000 --- a/03-refactor/include/usart.h +++ /dev/null @@ -1,219 +0,0 @@ -#ifndef H__USART_ -#define H__USART_ - -#include "common.h" -#include "rcc.h" - -#include <stdint.h> - -/* - * Possibel USART clock sources. - */ -typedef enum { - USART_CLK_SRC_PLK = 0, /* Clock derived from the SysClk. */ - USART_CLK_SRC_SYSCLK = 1, /* System clock. */ - USART_CLK_SRC_HSI16 = 2, /* 16MHz oscillator. */ - USART_CLK_SRC_LSE = 3 /* Low power 32kHz clock. */ -} usart_clk_src_t; - -typedef struct { - /* USART conttrol register 1. */ - union USART_CR1 { - __IO uint32_t r; - struct { - bits_t ue:1; /* UART enable */ - bits_t uesm:1; /* UART enabled in stop mode. */ - bits_t re:1; /* reciever enabled. */ - bits_t te:1; /* transmitter enabled. */ - bits_t idleie:1; /* Idle interrupt enabled. */ - bits_t rxneie:1; /* RXNEIE RXNE interrupt enable. */ - bits_t tcie:1; - bits_t txeie:1; - - bits_t peie:1; - bits_t ps:1; - bits_t pce:1; - bits_t wake:1; - bits_t m0:1; - bits_t mme:1; - bits_t cmie:1; - bits_t over8:1; - - bits_t dedt:5; - bits_t deat:5; - - bits_t rtoie:1; - bits_t eobie:1; - bits_t m1:1; - bits_t reserved:3; - } PACKED; - } __IO c1; - - /* USART control register 2. */ - union USART_CR2 { - __IO uint32_t r; - - struct { - RESERVED(4); - bits_t addm7:1; - bits_t lbdl:1; - bits_t lbdie:1; - RESERVED(1); - - bits_t lbcl:1; - bits_t cpha:1; - bits_t cpol:1; - bits_t clken:1; - bits_t stop:2; - bits_t linen:1; - bits_t swap:1; - - bits_t rxinv:1; - bits_t txinv:1; - bits_t datainv:1; - bits_t msbfirst:1; - bits_t abren:1; - bits_t abrmod:2; - bits_t rtoen:1; - - bits_t add:8; - } PACKED; - } __IO c2; - - union USART_CR3 { - __IO uint32_t r; - - struct { - bits_t eie:1; - bits_t iren:1; - bits_t irlp:1; - bits_t hdsel:1; - bits_t nack:1; - bits_t scen:1; - bits_t dmar:1; - bits_t dmat:1; - - bits_t rtse:1; - bits_t ctse:1; - bits_t ctsie:1; - bits_t onebit:1; - bits_t ovrdis:1; - bits_t ddre:1; - bits_t dem:1; - bits_t dep:1; - - RESERVED(1); - bits_t scarcnt:3; - bits_t wus:2; - bits_t wufie:1; - bits_t ucesm:1; - - bits_t tcbgtie:1; - RESERVED(7); - } PACKED; - } __IO c3; - - /* USART baud rate register. */ - union USART_BRR { - __IO uint32_t r; - - struct { - uint16_t v; - RESERVED(16); - } PACKED; - - /* Structure to use when OVER8 is set in the control register - * USART_C1. */ - struct { - bits_t low:3; - - RESERVED(1); - - bits_t high:12; - - RESERVED(16); - } PACKED over8; - } __IO br; - - uint32_t gtp_r; - uint32_t rto_r; - uint32_t rq_r; - uint32_t is_r; - uint32_t ic_r; - uint32_t rd_r; - uint32_t td_r; -} usart_t; - -#define USART1 (* (__IO usart_t*) 0x40013800) -#define USART2 (* (__IO usart_t*) 0x40004400) -typedef enum { - OVERSAMPLE_8, - OVERSAMPLE_16 -} oversampling_mode_t; - -static inline void usart_set_divisor( - __IO usart_t* usart, - uint16_t usartdiv) -{ - if (usart->c1.r & (1 << 15)) { - /* OVER8 is set. */ - usart->br.over8.high = (usartdiv & ~7); - usart->br.over8.low = ((usartdiv & 7) >> 1); - } else { - /* OVER8 is not set. */ - usart->br.v = usartdiv; - } -} - -static inline void usart_set_oversampling_mode( - __IO usart_t* usart, - oversampling_mode_t mode) -{ - usart->c1.over8 = mode == OVERSAMPLE_8; -} - -typedef enum { - USART_PARITY_DISABLED = 0, - USART_PARITY_ODD = 1, - USART_PARITY_EVEN = 2, -} usart_parity_t; - -typedef enum { - USART_ENABLE_TX = 0x02, - USART_ENABLE_RX = 0x01, - USART_ENABLE_DISABLED = 0x00, -} usart_enable_t; - -void usart_set_parity(__IO usart_t* usart, usart_parity_t parity); - -void usart_set_enabled(__IO usart_t* usart, usart_enable_t enabled); - -/* - * Send a byte on the usart, This command blocks until the data - * is fully sent. - */ -void usart_transmit_byte(__IO usart_t* usart, uint8_t byte); - -void set_usart1_clock_src(__IO rcc_t* rcc, usart_clk_src_t usart_clk_src); - -void set_usart1_clock_enabled(__IO rcc_t* rcc, bool enable); - -void set_usart2_clock_src(__IO rcc_t* rcc, usart_clk_src_t usart_clk_src); - -void set_usart2_clock_enabled(__IO rcc_t* rcc, bool enable); - -void usart_transmit_bytes( - __IO usart_t* usart, const uint8_t* bytes, uint32_t n); - -void usart_transmit_str(__IO usart_t* usart, const char* str); - -void usart_printf(__IO usart_t* usart, const char* fmt, ...); - -/* Returns non-zero if usart2 is enabled. */ -int is_usart2_enabled(); - -/* Enable the second USART. */ -int enable_usart2(uint32_t baud); - - -#endif /* H__USART_ */ |