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/*
* Copyright (c) 2020-2020, BLUETRUM Development Team
*
* SPDX-License-Identifier: Apache-2.0
*/
#include "ab32vg1_hal.h"
#ifdef HAL_UART_MODULE_ENABLED
enum
{
UARTxCON = 0x00,
UARTxCPND,
UARTxBAUD,
UARTxDATA,
};
/**
* @brief Set the UART baud rate.
*
* @param uartx This parameter can be UARTxN where x can be (0.2).
* @param baud Baud rate.
*/
void hal_uart_setbaud(hal_sfr_t uartx, uint32_t baud)
{
uint32_t baud_cfg;
uartx[UARTxCON] |= UART_CLK_SRC1;
baud_cfg = (26000000/2)/baud;
uartx[UARTxBAUD] = (baud_cfg << 16) | baud_cfg;
}
/**
* @brief Set the UART misc paramter.
*
* @param uartx This parameter can be UARTxN where x can be (0.2).
* @param param uart config paramter pointer.
*/
void hal_uart_setparam(hal_sfr_t uartx, struct uart_init *param)
{
switch (param->word_len)
{
case UART_WORDLENGTH_8B:
uartx[UARTxCON] &= ~UART_BIT9_ENABLE;
break;
case UART_WORDLENGTH_9B:
uartx[UARTxCON] |= UART_BIT9_ENABLE;
break;
default:
break;
}
switch (param->stop_bits)
{
case UART_STOPBITS_1:
uartx[UARTxCON] &= ~UART_SB2_ENABLE;
break;
case UART_STOPBITS_2:
uartx[UARTxCON] |= UART_SB2_ENABLE;
break;
default:
break;
}
if (param->mode & UART_MODE_1LINE)
{
uartx[UARTxCON] |= UART_1LINE_ENABLE;
}
else
{
uartx[UARTxCON] &= ~UART_1LINE_ENABLE;
}
}
/**
* @brief Initialize the UART mode.
*
* @param huart UART handle.
* @return hal_error_t
*/
hal_error_t hal_uart_init(struct uart_handle *huart)
{
if (huart == HAL_NULL) {
return -HAL_ERROR;
}
hal_uart_mspinit(huart);
uart_config_all(huart);
return HAL_EOK;
}
/**
* @brief DeInitialize the UART peripheral.
*
* @param uartx This parameter can be UARTxN where x can be (0.2).
*/
void hal_uart_deinit(hal_sfr_t uartx)
{
uartx[UARTxCON] = 0;
}
/**
* @brief Initialize the UART MSP.
*
* @param huart UART handle.
*/
WEAK void HAL_UART_MspInit(struct uart_handle *huart)
{}
/**
* @brief Control the UART peripheral.
*
* @param uartx This parameter can be UARTxN where x can be (0.2).
* @param cntl
* @arg UART_MODULE_ENABLE
* @arg UART_BIT9_ENABLE
* @arg UART_RXIT_ENABLE
* @arg UART_TXIT_ENABLE
* @arg UART_SB2_ENABLE
* @arg UART_CLK_SRC1
* @arg UART_1LINE_ENABLE
* @arg UART_RX_ENABLE
* @param param
* @arg HAL_DISABLE
* @arg HAL_ENABLE
*/
void hal_uart_control(hal_sfr_t uartx, uint32_t cntl, uint32_t param)
{
if (param == HAL_ENABLE) {
uartx[UARTxCON] |= (cntl);
} else {
uartx[UARTxCON] &= ~(cntl);
}
}
/**
* @brief Send a character
*
* @param uartx This parameter can be UARTxN where x can be (0.2).
* @param data The characters that need to be sent
*/
void hal_uart_write(hal_sfr_t uartx, uint8_t data)
{
uartx[UARTxDATA] = data;
}
/**
* @brief Receive a character.
*
* @param uartx This parameter can be UARTxN where x can be (0.2).
* @return uint8_t Received character.
*/
uint8_t hal_uart_read(hal_sfr_t uartx)
{
return (uartx[UARTxDATA] & 0xff);
}
/**
* @brief Get the UART flag.
*
* @param uartx This parameter can be UARTxN where x can be (0.2).
* @param flag
* @arg UART_FLAG_RXPND
* @arg UART_FLAG_TXPND
* @return uint32_t
*/
uint32_t hal_uart_getflag(hal_sfr_t uartx, uint32_t flag)
{
uint32_t ret = uartx[UARTxCON] & flag;
return ret;
}
/**
* @brief Clear the UART flag.
*
* @param uartx This parameter can be UARTxN where x can be (0.2).
* @param flag
* @arg UART_FLAG_RXPND
* @arg UART_FLAG_TXPND
*/
void hal_uart_clrflag(hal_sfr_t uartx, uint32_t flag)
{
uartx[UARTxCPND] |= flag;
}
/**
* @brief Configure the UART peripheral.
*
* @param huart UART handle.
*/
void uart_config_all(struct uart_handle *huart)
{
hal_uart_control(huart->instance, UART_MODULE_ENABLE, HAL_DISABLE);
CLKCON1 |= BIT(14);
if (huart->instance == UART0_BASE) {
hal_rcu_periph_clk_enable(RCU_UART0);
} else if (huart->instance == UART1_BASE) {
hal_rcu_periph_clk_enable(RCU_UART1);
} else if (huart->instance == UART2_BASE) {
hal_rcu_periph_clk_enable(RCU_UART2);
} else {
return; /* Not support! */
}
hal_uart_deinit(huart->instance);
hal_uart_setbaud(huart->instance, huart->init.baud);
hal_uart_setparam(huart->instance, &huart->init);
if (huart->init.mode != UART_MODE_TX) {
hal_uart_control(huart->instance, UART_RX_ENABLE, HAL_ENABLE);
}
hal_uart_control(huart->instance, UART_MODULE_ENABLE, HAL_ENABLE);
}
#endif
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