periph_cpu.h

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/*
 * Copyright (C) 2015 Freie Universität Berlin
 *
 * This file is subject to the terms and conditions of the GNU Lesser
 * General Public License v2.1. See the file LICENSE in the top level
 * directory for more details.
 */
 
#pragma once

 
#include <stdbool.h>
 
#include "periph_cpu_common.h"
 
#ifdef __cplusplus
extern "C" {
#endif

#define HAVE_SPI_MODE_T     
typedef enum {
    SPI_MODE_0 = (UCCKPH),              
    SPI_MODE_1 = 0,                     
    SPI_MODE_2 = (UCCKPL | UCCKPH),     
    SPI_MODE_3 = (UCCKPL)               
} spi_mode_t;


#define HAVE_SPI_CLK_T     
typedef enum {
    SPI_CLK_100KHZ = 100000,        
    SPI_CLK_400KHZ = 400000,        
    SPI_CLK_1MHZ   = 1000000,       
    SPI_CLK_5MHZ   = 5000000,       
    SPI_CLK_10MHZ  = SPI_CLK_5MHZ,  
} spi_clk_t;


#define PERIPH_SPI_NEEDS_INIT_CS        
#define PERIPH_SPI_NEEDS_TRANSFER_BYTE  
#define PERIPH_SPI_NEEDS_TRANSFER_REG   
#define PERIPH_SPI_NEEDS_TRANSFER_REGS  

typedef enum {
#ifdef __MSP430_HAS_USCI_AB0__
    MSP430_USCI_ID_A0,      
    MSP430_USCI_ID_B0,      
#endif
#ifdef __MSP430_HAS_USCI_AB1__
    MSP430_USCI_ID_A1,      
    MSP430_USCI_ID_B1,      
#endif
    MSP430_USCI_ID_NUMOF    
} msp430_usci_id_t;

typedef struct {
    msp430_usci_b_t *dev;       
 
    REG8 *interrupt_enable;     
    REG8 *interrupt_flag;       
    uint8_t tx_irq_mask;        
    uint8_t rx_irq_mask;        
    msp430_usci_id_t id;        
} msp430_usci_params_t;

typedef enum {
    USCI_CLK_UCLKI     = UCSSEL_UCLKI, 
    USCI_CLK_AUX       = UCSSEL_ACLK,  
    USCI_CLK_SUBMAIN   = UCSSEL_SMCLK, 
} msp430_usci_clk_t;

typedef struct {
    msp430_usci_clk_t clk_source;   
    uint8_t br0;                    
    uint8_t br1;                    
    uint8_t mctl;                   
} msp430_usci_prescaler_t;

typedef struct {
    msp430_usci_prescaler_t prescaler;  
    uint8_t ctl0;                       
} msp430_usci_conf_t;

typedef struct {
    msp430_usci_params_t usci_params; 
    gpio_t rxd;                     
    gpio_t txd;                     
} msp430_usci_uart_params_t;

typedef struct {
    const msp430_usci_uart_params_t *uart; 
} uart_conf_t;

typedef struct {
    msp430_usci_params_t usci_params;   
    gpio_t miso;                        
    gpio_t mosi;                        
    gpio_t sck;                         
} msp430_usci_spi_params_t;

typedef struct {
    const msp430_usci_spi_params_t *spi;    
} spi_conf_t;

extern msp430_port_p7_p8_t PORT_7;

extern msp430_port_p7_p8_t PORT_8;

void msp430_usci_acquire(const msp430_usci_params_t *params,
                         const msp430_usci_conf_t *conf);

void msp430_usci_release(const msp430_usci_params_t *params);

msp430_usci_prescaler_t msp430_usci_prescale(uint32_t target_hz);

extern const msp430_usci_uart_params_t usci_a0_as_uart;

extern const msp430_usci_uart_params_t usci_a1_as_uart;

extern const msp430_usci_spi_params_t usci_a0_as_spi;

extern const msp430_usci_spi_params_t usci_a1_as_spi;

extern const msp430_usci_spi_params_t usci_b0_as_spi;

extern const msp430_usci_spi_params_t usci_b1_as_spi;
 
#ifdef __cplusplus
}
#endif