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**************************************************************************/
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**************************************************************************/
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#include "neorv32.h"
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#include "neorv32.h"
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#include "neorv32_uart.h"
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#include "neorv32_uart.h"
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#include <string.h>
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#include <string.h>
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#include <stdarg.h>
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/// \cond
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/// \cond
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// Private functions
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// Private functions
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static void __neorv32_uart_itoa(uint32_t x, char *res) __attribute__((unused)); // GCC: do not ouput a warning when this variable is unused
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static void __neorv32_uart_itoa(uint32_t x, char *res) __attribute__((unused)); // GCC: do not ouput a warning when this variable is unused
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static void __neorv32_uart_tohex(uint32_t x, char *res) __attribute__((unused)); // GCC: do not ouput a warning when this variable is unused
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static void __neorv32_uart_tohex(uint32_t x, char *res) __attribute__((unused)); // GCC: do not ouput a warning when this variable is unused
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**************************************************************************/
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**************************************************************************/
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void neorv32_uart_disable(void) { neorv32_uart0_disable(); }
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void neorv32_uart_disable(void) { neorv32_uart0_disable(); }
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/**********************************************************************//**
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/**********************************************************************//**
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* Enable UART0.
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* @warning This functions maps to UART0 (primary UART).
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**************************************************************************/
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void neorv32_uart_enable(void) { neorv32_uart0_enable(); }
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/**********************************************************************//**
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* Send single char via UART0.
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* Send single char via UART0.
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*
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*
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* @warning This functions maps to UART0 (primary UART).
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* @warning This functions maps to UART0 (primary UART).
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* @note This function is blocking.
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* @note This function is blocking.
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*
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*
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UART0_CT &= ~((uint32_t)(1 << UART_CT_EN));
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UART0_CT &= ~((uint32_t)(1 << UART_CT_EN));
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}
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}
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/**********************************************************************//**
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/**********************************************************************//**
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* Enable UART0.
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**************************************************************************/
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void neorv32_uart0_enable(void) {
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UART0_CT = ((uint32_t)(1 << UART_CT_EN));
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}
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/**********************************************************************//**
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* Send single char via UART0.
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* Send single char via UART0.
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*
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*
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* @note This function is blocking.
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* @note This function is blocking.
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*
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*
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* @param[in] c Char to be send.
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* @param[in] c Char to be send.
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**************************************************************************/
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**************************************************************************/
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void neorv32_uart0_putc(char c) {
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void neorv32_uart0_putc(char c) {
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#if defined UART0_SIM_MODE || defined UART_SIM_MODE
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UART0_DATA = ((uint32_t)c) << UART_DATA_LSB;
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#else
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// wait for previous transfer to finish
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// wait for previous transfer to finish
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while ((UART0_CT & (1<<UART_CT_TX_BUSY)) != 0);
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while ((UART0_CT & (1<<UART_CT_TX_BUSY)) != 0);
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UART0_DATA = ((uint32_t)c) << UART_DATA_LSB;
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UART0_DATA = ((uint32_t)c) << UART_DATA_LSB;
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#endif
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}
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}
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/**********************************************************************//**
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/**********************************************************************//**
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* Check if UART0 TX is busy.
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* Check if UART0 TX is busy.
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UART1_CT &= ~((uint32_t)(1 << UART_CT_EN));
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UART1_CT &= ~((uint32_t)(1 << UART_CT_EN));
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}
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}
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/**********************************************************************//**
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/**********************************************************************//**
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* Enable UART1.
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**************************************************************************/
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void neorv32_uart1_enable(void) {
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UART1_CT |= ((uint32_t)(1 << UART_CT_EN));
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}
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/**********************************************************************//**
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* Send single char via UART1.
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* Send single char via UART1.
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*
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*
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* @note This function is blocking.
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* @note This function is blocking.
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*
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*
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* @param[in] c Char to be send.
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* @param[in] c Char to be send.
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**************************************************************************/
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**************************************************************************/
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void neorv32_uart1_putc(char c) {
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void neorv32_uart1_putc(char c) {
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#ifdef UART1_SIM_MODE
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UART1_DATA = ((uint32_t)c) << UART_DATA_LSB;
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#else
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// wait for previous transfer to finish
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// wait for previous transfer to finish
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while ((UART1_CT & (1<<UART_CT_TX_BUSY)) != 0);
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while ((UART1_CT & (1<<UART_CT_TX_BUSY)) != 0);
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UART1_DATA = ((uint32_t)c) << UART_DATA_LSB;
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UART1_DATA = ((uint32_t)c) << UART_DATA_LSB;
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#endif
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}
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}
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/**********************************************************************//**
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/**********************************************************************//**
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* Check if UART1 TX is busy.
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* Check if UART1 TX is busy.
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