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Added WaveCreatePad to API

This commit is contained in:
Jul3k 2020-03-05 17:42:55 +01:00
parent b9b8eff390
commit 4ab125cfff
5 changed files with 85 additions and 38 deletions
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1
command.c
View File

@ -202,6 +202,7 @@ cmdInfo_t cmdInfo[]=
{PI_CMD_WVCHA, "WVCHA", 197, 0, 0}, // gpioWaveChain
{PI_CMD_WVCLR, "WVCLR", 101, 0, 1}, // gpioWaveClear
{PI_CMD_WVCRE, "WVCRE", 101, 2, 1}, // gpioWaveCreate
{PI_CMD_WVCAP, "WVCAP", 112, 2, 1}, // gpioWaveCreatePad
{PI_CMD_WVDEL, "WVDEL", 112, 0, 1}, // gpioWaveDelete
{PI_CMD_WVGO, "WVGO" , 101, 2, 0}, // gpioWaveTxStart
{PI_CMD_WVGOR, "WVGOR", 101, 2, 0}, // gpioWaveTxStart

42
pigpio.c
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@ -2432,7 +2432,7 @@ static int myDoCommand(uintptr_t *p, unsigned bufSize, char *buf)
case PI_CMD_WVCLR: res = gpioWaveClear(); break;
case PI_CMD_WVCRE: res = gpioWaveCreate(p[1]); break;
case PI_CMD_WVCRE: res = gpioWaveCreate(); break;
case PI_CMD_WVDEL: res = gpioWaveDelete(p[1]); break;
@ -2992,7 +2992,7 @@ static void waveCBsOOLs(int *numCBs, int *numBOOLs, int *numTOOLs)
/* ----------------------------------------------------------------------- */
static int wave2Cbs(unsigned wave_mode, int *CB, int *BOOL, int *TOOL, int size)
static int wave2Cbs(unsigned wave_mode, int *CB, int *BOOL, int *TOOL)
{
int botCB=*CB, botOOL=*BOOL, topOOL=*TOOL;
@ -3130,28 +3130,6 @@ static int wave2Cbs(unsigned wave_mode, int *CB, int *BOOL, int *TOOL, int size)
}
}
if (size)
{
/* pad the wave */
botCB = *CB + NUM_WAVE_CBS / size - 1;
botOOL = *BOOL + NUM_WAVE_OOL / size - 1;
//topOOL = //Fix: Ignore topOOL, flags not supported.
/* link the last CB to end of wave */
p->next = waveCbPOadr(botCB);
/* add dummy cb at end of DMA */
p = rawWaveCBAdr(botCB++);
p->info = NORMAL_DMA | DMA_DEST_IGNORE;
p->src = waveOOLPOadr(botOOL++);
p->dst = ((GPIO_BASE + (GPSET0*4)) & 0x00ffffff) | PI_PERI_BUS;
p->length = 4;
p->next = 0;
}
if (p != NULL)
{
if (wave_mode == PI_WAVE_MODE_ONE_SHOT)
@ -9574,7 +9552,7 @@ int rawWaveAddSPI(
/* ----------------------------------------------------------------------- */
int gpioWaveCreate(int size) // Fix: Make variadic.
int gpioWaveCreate(void)
{
int i, wid;
int numCB, numBOOL, numTOOL;
@ -9588,14 +9566,7 @@ int gpioWaveCreate(int size) // Fix: Make variadic.
/* What resources are needed? */
if (size == 0)
waveCBsOOLs(&numCB, &numBOOL, &numTOOL);
else {
numCB = NUM_WAVE_CBS / size;
numBOOL = NUM_WAVE_OOL / size;
numTOOL = 0; // ignore TOOL, ie, no flags support
}
waveCBsOOLs(&numCB, &numBOOL, &numTOOL);
wid = -1;
@ -9648,7 +9619,7 @@ int gpioWaveCreate(int size) // Fix: Make variadic.
BOOL = waveInfo[wid].botOOL;
TOOL = waveInfo[wid].topOOL;
wave2Cbs(PI_WAVE_MODE_ONE_SHOT, &CB, &BOOL, &TOOL, size);
wave2Cbs(PI_WAVE_MODE_ONE_SHOT, &CB, &BOOL, &TOOL);
/* Sanity check. */
@ -9662,9 +9633,6 @@ int gpioWaveCreate(int size) // Fix: Make variadic.
numTOOL, waveInfo[wid].topOOL-TOOL);
}
DBG(DBG_USER, "Wave Stats: wid=%d CBs %d BOOL %d TOOL %d", wid,
numCB, numBOOL, numTOOL);
waveInfo[wid].deleted = 0;
/* Consume waves. */

38
pigpio.h
View File

@ -1986,6 +1986,43 @@ Returns the new waveform id if OK, otherwise PI_EMPTY_WAVEFORM,
PI_NO_WAVEFORM_ID, PI_TOO_MANY_CBS, or PI_TOO_MANY_OOL.
D*/
int gpioWaveCreatePad(int percent);
/*D
This function creates a waveform like wave_create but pads the consumed
resources. Where percent gives the percentage of the resources to use (in terms
of the theoretical maximum, not the current amount free). This allows the reuse
of deleted waves while a transmission is active. Upon success a wave id
greater than or equal to 0 is returned, otherwise PI_EMPTY_WAVEFORM,
PI_TOO_MANY_CBS, PI_TOO_MANY_OOL, or PI_NO_WAVEFORM_ID.
. .
pi: >=0 (as returned by [*pigpio_start*]).
. .
The data provided by the [*wave_add_**] functions is consumed by this
function.
As many waveforms may be created as there is space available. The
wave id is passed to [*wave_send_**] to specify the waveform to transmit.
A usage would be the creation of two waves where one is filled while the other
is beeing transmitted. Each wave is assigned 50% of the available resources.
This buffer structure allows the transmission of infinite wave sequences.
Step 1. [*wave_clear*] to clear all waveforms and added data.
Step 2. [*wave_add_**] calls to supply the waveform data.
Step 3. [*wave_create_and_pad*] to create a 50% padded waveform and get a unique id
Step 4. [*wave_send_**] with the id of the waveform to transmit.
Repeat steps 2-4 as needed always waiting for the active waveform to be transmitted
before marking it as deleted.
Returns the new waveform id if OK, otherwise PI_EMPTY_WAVEFORM,
PI_NO_WAVEFORM_ID, PI_TOO_MANY_CBS, or PI_TOO_MANY_OOL.
D*/
/*F*/
int gpioWaveDelete(unsigned wave_id);
@ -6271,6 +6308,7 @@ PARAMS*/
#define PI_CMD_EVT 116
#define PI_CMD_PROCU 117
#define PI_CMD_WVCAP 118
/*DEF_E*/

3
pigpiod_if2.c
View File

@ -953,6 +953,9 @@ int wave_add_serial(
int wave_create(int pi)
{return pigpio_command(pi, PI_CMD_WVCRE, 0, 0, 1);}
int wave_create_and_pad(int pi, int percent)
{return pigpio_command(pi, PI_CMD_WVCAP, percent, 0, 1);}
int wave_delete(int pi, unsigned wave_id)
{return pigpio_command(pi, PI_CMD_WVDEL, wave_id, 0, 1);}

37
pigpiod_if2.h
View File

@ -1371,6 +1371,43 @@ Returns the new waveform id if OK, otherwise PI_EMPTY_WAVEFORM,
PI_NO_WAVEFORM_ID, PI_TOO_MANY_CBS, or PI_TOO_MANY_OOL.
D*/
int wave_create_and_pad(int pi, int percent);
/*D
This function creates a waveform like wave_create but pads the consumed
resources. Where percent gives the percentage of the resources to use (in terms
of the theoretical maximum, not the current amount free). This allows the reuse
of deleted waves while a transmission is active. Upon success a wave id
greater than or equal to 0 is returned, otherwise PI_EMPTY_WAVEFORM,
PI_TOO_MANY_CBS, PI_TOO_MANY_OOL, or PI_NO_WAVEFORM_ID.
. .
pi: >=0 (as returned by [*pigpio_start*]).
. .
The data provided by the [*wave_add_**] functions is consumed by this
function.
As many waveforms may be created as there is space available. The
wave id is passed to [*wave_send_**] to specify the waveform to transmit.
A usage would be the creation of two waves where one is filled while the other
is beeing transmitted. Each wave is assigned 50% of the available resources.
This buffer structure allows the transmission of infinite wave sequences.
Step 1. [*wave_clear*] to clear all waveforms and added data.
Step 2. [*wave_add_**] calls to supply the waveform data.
Step 3. [*wave_create_and_pad*] to create a 50% padded waveform and get a unique id
Step 4. [*wave_send_**] with the id of the waveform to transmit.
Repeat steps 2-4 as needed always waiting for the active waveform to be transmitted
before marking it as deleted.
Returns the new waveform id if OK, otherwise PI_EMPTY_WAVEFORM,
PI_NO_WAVEFORM_ID, PI_TOO_MANY_CBS, or PI_TOO_MANY_OOL.
D*/
/*F*/
int wave_delete(int pi, unsigned wave_id);