📄 bsp.c
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*
* Caller(s) : Application.
*
* Note(s) : none.
*********************************************************************************************************
*/
void BSP_LED_Off (CPU_INT08U led)
{
switch (led) {
case 0:
GPIO_ResetBits(GPIOG, (BSP_GPIOG_LED1 | BSP_GPIOG_LED2));
GPIO_ResetBits(GPIOI, BSP_GPIOI_LED3);
GPIO_ResetBits(GPIOC, BSP_GPIOC_LED4);
break;
case 1:
GPIO_ResetBits(GPIOG, BSP_GPIOG_LED1);
break;
case 2:
GPIO_ResetBits(GPIOG, BSP_GPIOG_LED2);
break;
case 3:
GPIO_ResetBits(GPIOI, BSP_GPIOI_LED3);
break;
case 4:
GPIO_ResetBits(GPIOC, BSP_GPIOC_LED4);
break;
default:
break;
}
}
/*
*********************************************************************************************************
* BSP_LED_Toggle()
*
* Description : TOGGLE any or all the LEDs on the board.
*
* Argument(s) : led The ID of the LED to control:
*
* 0 TOGGLE ALL the LEDs
* 1 TOGGLE user LED1
* 2 TOGGLE user LED2
* 3 TOGGLE user LED3
* 4 TOGGLE user LED4
*
* Return(s) : none.
*
* Caller(s) : Application.
*
* Note(s) : none.
*********************************************************************************************************
*/
void BSP_LED_Toggle (CPU_INT08U led)
{
CPU_INT32U pins;
switch (led) {
case 0:
pins = GPIO_ReadOutputData(GPIOG);
pins ^= (BSP_GPIOG_LED1 | BSP_GPIOG_LED2);
GPIO_SetBits( GPIOG, pins & (BSP_GPIOG_LED1 | BSP_GPIOG_LED2));
GPIO_ResetBits(GPIOG, (~pins) & (BSP_GPIOG_LED1 | BSP_GPIOG_LED2));
pins = GPIO_ReadOutputData(GPIOI);
pins ^= BSP_GPIOI_LED3;
GPIO_SetBits( GPIOI, pins & BSP_GPIOI_LED3);
GPIO_ResetBits(GPIOI, (~pins) & BSP_GPIOI_LED3);
pins = GPIO_ReadOutputData(GPIOC);
pins ^= BSP_GPIOC_LED4;
GPIO_SetBits( GPIOC, pins & BSP_GPIOC_LED4);
GPIO_ResetBits(GPIOC, (~pins) & BSP_GPIOC_LED4);
break;
case 1:
pins = GPIO_ReadOutputData(GPIOG);
pins ^= BSP_GPIOG_LED1;
GPIO_SetBits( GPIOG, pins & BSP_GPIOG_LED1);
GPIO_ResetBits(GPIOG, (~pins) & BSP_GPIOG_LED1);
break;
case 2:
pins = GPIO_ReadOutputData(GPIOG);
pins ^= BSP_GPIOG_LED2;
GPIO_SetBits( GPIOG, pins & BSP_GPIOG_LED2);
GPIO_ResetBits(GPIOG, (~pins) & BSP_GPIOG_LED2);
break;
case 3:
pins = GPIO_ReadOutputData(GPIOI);
pins ^= BSP_GPIOI_LED3;
GPIO_SetBits( GPIOI, pins & BSP_GPIOI_LED3);
GPIO_ResetBits(GPIOI, (~pins) & BSP_GPIOI_LED3);
break;
case 4:
pins = GPIO_ReadOutputData(GPIOC);
pins ^= BSP_GPIOC_LED4;
GPIO_SetBits( GPIOC, pins & BSP_GPIOC_LED4);
GPIO_ResetBits(GPIOC, (~pins) & BSP_GPIOC_LED4);
break;
default:
break;
}
}
/*$PAGE*/
/*
*********************************************************************************************************
* CPU_TS_TmrInit()
*
* Description : Initialize & start CPU timestamp timer.
*
* Argument(s) : none.
*
* Return(s) : none.
*
* Caller(s) : CPU_TS_Init().
*
* This function is an INTERNAL CPU module function & MUST be implemented by application/
* BSP function(s) [see Note #1] but MUST NOT be called by application function(s).
*
* Note(s) : (1) CPU_TS_TmrInit() is an application/BSP function that MUST be defined by the developer
* if either of the following CPU features is enabled :
*
* (a) CPU timestamps
* (b) CPU interrupts disabled time measurements
*
* See 'cpu_cfg.h CPU TIMESTAMP CONFIGURATION Note #1'
* & 'cpu_cfg.h CPU INTERRUPTS DISABLED TIME MEASUREMENT CONFIGURATION Note #1a'.
*
* (2) (a) Timer count values MUST be returned via word-size-configurable 'CPU_TS_TMR'
* data type.
*
* (1) If timer has more bits, truncate timer values' higher-order bits greater
* than the configured 'CPU_TS_TMR' timestamp timer data type word size.
*
* (2) Since the timer MUST NOT have less bits than the configured 'CPU_TS_TMR'
* timestamp timer data type word size; 'CPU_CFG_TS_TMR_SIZE' MUST be
* configured so that ALL bits in 'CPU_TS_TMR' data type are significant.
*
* In other words, if timer size is not a binary-multiple of 8-bit octets
* (e.g. 20-bits or even 24-bits), then the next lower, binary-multiple
* octet word size SHOULD be configured (e.g. to 16-bits). However, the
* minimum supported word size for CPU timestamp timers is 8-bits.
*
* See also 'cpu_cfg.h CPU TIMESTAMP CONFIGURATION Note #2'
* & 'cpu_core.h CPU TIMESTAMP DATA TYPES Note #1'.
*
* (b) Timer SHOULD be an 'up' counter whose values increase with each time count.
*
* (c) When applicable, timer period SHOULD be less than the typical measured time
* but MUST be less than the maximum measured time; otherwise, timer resolution
* inadequate to measure desired times.
*
* See also 'CPU_TS_TmrRd() Note #2'.
*********************************************************************************************************
*/
#if (CPU_CFG_TS_TMR_EN == DEF_ENABLED)
void CPU_TS_TmrInit (void)
{
CPU_INT32U fclk_freq;
fclk_freq = BSP_CPU_ClkFreq();
BSP_REG_DEM_CR |= (CPU_INT32U)BSP_BIT_DEM_CR_TRCENA; /* Enable Cortex-M4's DWT CYCCNT reg. */
BSP_REG_DWT_CYCCNT = (CPU_INT32U)0u;
BSP_REG_DWT_CR |= (CPU_INT32U)BSP_BIT_DWT_CR_CYCCNTENA;
CPU_TS_TmrFreqSet((CPU_TS_TMR_FREQ)fclk_freq);
}
#endif
/*$PAGE*/
/*
*********************************************************************************************************
* CPU_TS_TmrRd()
*
* Description : Get current CPU timestamp timer count value.
*
* Argument(s) : none.
*
* Return(s) : Timestamp timer count (see Notes #2a & #2b).
*
* Caller(s) : CPU_TS_Init(),
* CPU_TS_Get32(),
* CPU_TS_Get64(),
* CPU_IntDisMeasStart(),
* CPU_IntDisMeasStop().
*
* This function is an INTERNAL CPU module function & MUST be implemented by application/
* BSP function(s) [see Note #1] but SHOULD NOT be called by application function(s).
*
* Note(s) : (1) CPU_TS_TmrRd() is an application/BSP function that MUST be defined by the developer
* if either of the following CPU features is enabled :
*
* (a) CPU timestamps
* (b) CPU interrupts disabled time measurements
*
* See 'cpu_cfg.h CPU TIMESTAMP CONFIGURATION Note #1'
* & 'cpu_cfg.h CPU INTERRUPTS DISABLED TIME MEASUREMENT CONFIGURATION Note #1a'.
*
* (2) (a) Timer count values MUST be returned via word-size-configurable 'CPU_TS_TMR'
* data type.
*
* (1) If timer has more bits, truncate timer values' higher-order bits greater
* than the configured 'CPU_TS_TMR' timestamp timer data type word size.
*
* (2) Since the timer MUST NOT have less bits than the configured 'CPU_TS_TMR'
* timestamp timer data type word size; 'CPU_CFG_TS_TMR_SIZE' MUST be
* configured so that ALL bits in 'CPU_TS_TMR' data type are significant.
*
* In other words, if timer size is not a binary-multiple of 8-bit octets
* (e.g. 20-bits or even 24-bits), then the next lower, binary-multiple
* octet word size SHOULD be configured (e.g. to 16-bits). However, the
* minimum supported word size for CPU timestamp timers is 8-bits.
*
* See also 'cpu_cfg.h CPU TIMESTAMP CONFIGURATION Note #2'
* & 'cpu_core.h CPU TIMESTAMP DATA TYPES Note #1'.
*
* (b) Timer SHOULD be an 'up' counter whose values increase with each time count.
*
* (1) If timer is a 'down' counter whose values decrease with each time count,
* then the returned timer value MUST be ones-complemented.
*
* (c) (1) When applicable, the amount of time measured by CPU timestamps is
* calculated by either of the following equations :
*
* (A) Time measured = Number timer counts * Timer period
*
* where
*
* Number timer counts Number of timer counts measured
* Timer period Timer's period in some units of
* (fractional) seconds
* Time measured Amount of time measured, in same
* units of (fractional) seconds
* as the Timer period
*
* Number timer counts
* (B) Time measured = ---------------------
* Timer frequency
*
* where
*
* Number timer counts Number of timer counts measured
* Timer frequency Timer's frequency in some units
* of counts per second
* Time measured Amount of time measured, in seconds
*
* (2) Timer period SHOULD be less than the typical measured time but MUST be less
* than the maximum measured time; otherwise, timer resolution inadequate to
* measure desired times.
*********************************************************************************************************
*/
#if (CPU_CFG_TS_TMR_EN == DEF_ENABLED)
CPU_TS_TMR CPU_TS_TmrRd (void)
{
CPU_TS_TMR ts_tmr_cnts;
ts_tmr_cnts = (CPU_TS_TMR)BSP_REG_DWT_CYCCNT;
return (ts_tmr_cnts);
}
#endif
/*$PAGE*/
/*
*********************************************************************************************************
* CPU_TSxx_to_uSec()
*
* Description : Convert a 32-/64-bit CPU timestamp from timer counts to microseconds.
*
* Argument(s) : ts_cnts CPU timestamp (in timestamp timer counts [see Note #2aA]).
*
* Return(s) : Converted CPU timestamp (in microseconds [see Note #2aD]).
*
* Caller(s) : Application.
*
* This function is an (optional) CPU module application programming interface (API)
* function which MAY be implemented by application/BSP function(s) [see Note #1] &
* MAY be called by application function(s).
*
* Note(s) : (1) CPU_TS32_to_uSec()/CPU_TS64_to_uSec() are application/BSP functions that MAY be
* optionally defined by the developer when either of the following CPU features is
* enabled :
*
* (a) CPU timestamps
* (b) CPU interrupts disabled time measurements
*
* See 'cpu_cfg.h CPU TIMESTAMP CONFIGURATION Note #1'
* & 'cpu_cfg.h CPU INTERRUPTS DISABLED TIME MEASUREMENT CONFIGURATION Note #1a'.
*
* (2) (a) The amount of time measured by CPU timestamps is calculated by either of
* the following equations :
*
* 10^6 microseconds
* (1) Time measured = Number timer counts * ------------------- * Timer period
* 1 second
*
* Number timer counts 10^6 microseconds
* (2) Time measured = --------------------- * -------------------
* Timer frequency 1 second
*
* where
*
* (A) Number timer counts Number of timer counts measured
* (B) Timer frequency Timer's frequency in some units
* of counts per second
* (C) Timer period Timer's period in some units of
* (fractional) seconds
* (D) Time measured Amount of time measured,
* in microseconds
*
* (b) Timer period SHOULD be less than the typical measured time but MUST be less
* than the maximum measured time; otherwise, timer resolution inadequate to
* measure desired times.
*
* (c) Specific implementations may convert any number of CPU_TS32 or CPU_TS64 bits
* -- up to 32 or 64, respectively -- into microseconds.
*********************************************************************************************************
*/
#if (CPU_CFG_TS_32_EN == DEF_ENABLED)
CPU_INT64U CPU_TS32_to_uSec (CPU_TS32 ts_cnts)
{
CPU_INT64U ts_us;
CPU_INT64U fclk_freq;
fclk_freq = BSP_CPU_ClkFreq();
ts_us = ts_cnts / (fclk_freq / DEF_TIME_NBR_uS_PER_SEC);
return (ts_us);
}
#endif
#if (CPU_CFG_TS_64_EN == DEF_ENABLED)
CPU_INT64U CPU_TS64_to_uSec (CPU_TS64 ts_cnts)
{
CPU_INT64U ts_us;
CPU_INT64U fclk_freq;
fclk_freq = BSP_CPU_ClkFreq();
ts_us = ts_cnts / (fclk_freq / DEF_TIME_NBR_uS_PER_SEC);
return (ts_us);
}
#endif
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