mirror of https://github.com/joan2937/pigpio
V68+: Changes for Pi4B (base address, default DMA channels, PUD)
This commit is contained in:
joan2937
parent
4985f93f67
commit
3ea6fd94fd
36
pigpio.3
36
pigpio.3
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@ -7029,8 +7029,20 @@ secondaryChannel: 0-14
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.br
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.br
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The default setting is to use channel 14 for the primary channel and
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channel 6 for the secondary channel.
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The default setting depends on whether the Pi has a BCM2711 chip or
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not (currently only the Pi4B has a BCM2711).
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.br
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.br
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The default setting for a non-BCM2711 is to use channel 14 for the
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primary channel and channel 6 for the secondary channel.
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.br
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.br
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The default setting for a BCM2711 is to use channel 7 for the
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primary channel and channel 6 for the secondary channel.
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.br
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@ -8022,12 +8034,12 @@ PI_MAX_WAVE_DATABITS 32
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.br
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.IP "\fBDMAchannel\fP: 0-14" 0
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.IP "\fBDMAchannel\fP: 0-15" 0
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.EX
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PI_MIN_DMA_CHANNEL 0
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.br
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PI_MAX_DMA_CHANNEL 14
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PI_MAX_DMA_CHANNEL 15
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.br
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.EE
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@ -8928,7 +8940,7 @@ The position of an item.
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.br
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.IP "\fBprimaryChannel\fP: 0-14" 0
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.IP "\fBprimaryChannel\fP: 0-15" 0
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The DMA channel used to time the sampling of GPIO and to time servo and
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PWM pulses.
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@ -10103,15 +10115,15 @@ A 16-bit word value.
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.br
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#define PI_BAD_IF_FLAGS -26 // ifFlags > 4
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.br
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#define PI_BAD_CHANNEL -27 // DMA channel not 0-14
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#define PI_BAD_CHANNEL -27 // DMA channel not 0-15
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.br
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#define PI_BAD_PRIM_CHANNEL -27 // DMA primary channel not 0-14
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#define PI_BAD_PRIM_CHANNEL -27 // DMA primary channel not 0-15
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.br
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#define PI_BAD_SOCKET_PORT -28 // socket port not 1024-32000
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.br
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#define PI_BAD_FIFO_COMMAND -29 // unrecognized fifo command
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.br
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#define PI_BAD_SECO_CHANNEL -30 // DMA secondary channel not 0-6
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#define PI_BAD_SECO_CHANNEL -30 // DMA secondary channel not 0-15
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.br
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#define PI_NOT_INITIALISED -31 // function called before gpioInitialise
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.br
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@ -10380,6 +10392,12 @@ A 16-bit word value.
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.br
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#define PI_DEFAULT_DMA_SECONDARY_CHANNEL 6
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.br
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#define PI_DEFAULT_DMA_PRIMARY_CH_2711 7
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.br
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#define PI_DEFAULT_DMA_SECONDARY_CH_2711 6
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.br
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#define PI_DEFAULT_DMA_NOT_SET 15
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.br
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#define PI_DEFAULT_SOCKET_PORT 8888
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.br
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#define PI_DEFAULT_SOCKET_PORT_STR "8888"
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@ -10400,6 +10418,8 @@ A 16-bit word value.
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.br
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#define PI_DEFAULT_UPDATE_MASK_PI3B 0x0000000FFFFFFCLL
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.br
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#define PI_DEFAULT_UPDATE_MASK_PI4B 0x0000000FFFFFFCLL
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.br
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#define PI_DEFAULT_UPDATE_MASK_COMPUTE 0x00FFFFFFFFFFFFLL
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.br
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#define PI_DEFAULT_MEM_ALLOC_MODE PI_MEM_ALLOC_AUTO
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171
pigpio.c
171
pigpio.c
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@ -25,7 +25,7 @@ OTHER DEALINGS IN THE SOFTWARE.
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For more information, please refer to <http://unlicense.org/>
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*/
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/* pigpio version 68 */
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/* pigpio version 69 */
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/* include ------------------------------------------------------- */
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@ -114,6 +114,11 @@ For more information, please refer to <http://unlicense.org/>
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39 GPPUDCLK1 GPIO Pin Pull-up/down Enable Clock 1
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40 - Reserved
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41 - Test
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42-56 Reserved
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57 GPPUPPDN1 Pin pull-up/down for pins 15:0
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58 GPPUPPDN1 Pin pull-up/down for pins 31:16
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59 GPPUPPDN2 Pin pull-up/down for pins 47:32
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60 GPPUPPDN3 Pin pull-up/down for pins 57:48
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*/
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/*
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@ -317,7 +322,7 @@ bit 0 READ_LAST_NOT_SET_ERROR
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#define BSCS_LEN 0x40
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#define CLK_LEN 0xA8
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#define DMA_LEN 0x1000 /* allow access to all channels */
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#define GPIO_LEN 0xB4
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#define GPIO_LEN 0xF4 /* 2711 has more registers */
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#define PADS_LEN 0x38
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#define PCM_LEN 0x24
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#define PWM_LEN 0x28
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@ -357,6 +362,13 @@ bit 0 READ_LAST_NOT_SET_ERROR
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#define GPPUDCLK0 38
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#define GPPUDCLK1 39
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/* BCM2711 has different pulls */
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#define GPPUPPDN0 57
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#define GPPUPPDN1 58
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#define GPPUPPDN2 59
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#define GPPUPPDN3 60
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#define DMA_CS 0
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#define DMA_CONBLK_AD 1
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#define DMA_DEBUG 8
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@ -498,8 +510,9 @@ bit 0 READ_LAST_NOT_SET_ERROR
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#define CLK_CTL_SRC_OSC 1
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#define CLK_CTL_SRC_PLLD 6
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#define CLK_OSC_FREQ 19200000
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#define CLK_PLLD_FREQ 500000000
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#define CLK_OSC_FREQ 19200000
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#define CLK_PLLD_FREQ 500000000
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#define CLK_PLLD_FREQ_2711 750000000
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#define CLK_DIV_DIVI(x) ((x)<<12)
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#define CLK_DIV_DIVF(x) ((x)<< 0)
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@ -1199,11 +1212,13 @@ typedef struct
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/* initialise once then preserve */
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static volatile uint32_t piCores = 0;
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static volatile uint32_t pi_ispi = 0;
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static volatile uint32_t pi_peri_phys = 0x20000000;
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static volatile uint32_t pi_dram_bus = 0x40000000;
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static volatile uint32_t pi_mem_flag = 0x0C;
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static volatile uint32_t piCores = 0;
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static volatile uint32_t pi_peri_phys = 0x20000000;
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static volatile uint32_t pi_dram_bus = 0x40000000;
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static volatile uint32_t pi_mem_flag = 0x0C;
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static volatile uint32_t pi_ispi = 0;
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static volatile uint32_t pi_is_2711 = 0;
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static volatile uint32_t clk_plld_freq = CLK_PLLD_FREQ;
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static int libInitialised = 0;
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@ -1341,8 +1356,8 @@ static volatile gpioCfg_t gpioCfg =
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PI_DEFAULT_BUFFER_MILLIS,
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PI_DEFAULT_CLK_MICROS,
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PI_DEFAULT_CLK_PERIPHERAL,
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PI_DEFAULT_DMA_PRIMARY_CHANNEL,
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PI_DEFAULT_DMA_SECONDARY_CHANNEL,
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PI_DEFAULT_DMA_NOT_SET, /* primary DMA */
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PI_DEFAULT_DMA_NOT_SET, /* secondary DMA */
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PI_DEFAULT_SOCKET_PORT,
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PI_DEFAULT_IF_FLAGS,
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PI_DEFAULT_MEM_ALLOC_MODE,
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@ -4336,7 +4351,7 @@ static void spiGoA(
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cs = PI_SPI_FLAGS_GET_CSPOLS(flags) & (1<<channel);
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spiDefaults = AUXSPI_CNTL0_SPEED(125000000/speed) |
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spiDefaults = AUXSPI_CNTL0_SPEED((125000000/speed)-1)|
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AUXSPI_CNTL0_IN_RISING(bit_ir[mode]) |
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AUXSPI_CNTL0_OUT_RISING(bit_or[mode]) |
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AUXSPI_CNTL0_INVERT_CLK(bit_ic[mode]) |
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@ -7259,36 +7274,41 @@ static int initCheckPermitted(void)
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static int initPeripherals(void)
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{
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uint32_t dmaBase;
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DBG(DBG_STARTUP, "");
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gpioReg = initMapMem(fdMem, GPIO_BASE, GPIO_LEN);
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if (gpioReg == MAP_FAILED)
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SOFT_ERROR(PI_INIT_FAILED, "mmap gpio failed (%m) GPIO_BASE=%08X GPIO_LEN=%08X REV=%08X",GPIO_BASE,GPIO_LEN,gpioHardwareRevision());
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SOFT_ERROR(PI_INIT_FAILED, "mmap gpio failed (%m)");
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/* dma channels 0-14 share one page, 15 has another */
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if (gpioCfg.DMAprimaryChannel < 15)
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{
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dmaBase = DMA_BASE;
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}
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else dmaBase = DMA15_BASE;
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dmaReg = initMapMem(fdMem, dmaBase, DMA_LEN);
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dmaReg = initMapMem(fdMem, DMA_BASE, DMA_LEN);
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if (dmaReg == MAP_FAILED)
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SOFT_ERROR(PI_INIT_FAILED, "mmap dma failed (%m)");
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if (gpioCfg.DMAprimaryChannel < 15)
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{
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dmaIn = dmaReg + (gpioCfg.DMAprimaryChannel * 0x40);
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dmaOut = dmaReg + (gpioCfg.DMAsecondaryChannel * 0x40);
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}
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/* we should know if we are running on a BCM2711 by now */
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DBG(DBG_STARTUP, "DMA #%d @ %08X @ %08"PRIXPTR,
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gpioCfg.DMAprimaryChannel, dmaBase, (uintptr_t)dmaIn);
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if (gpioCfg.DMAprimaryChannel == PI_DEFAULT_DMA_NOT_SET)
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{
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if (pi_is_2711)
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gpioCfg.DMAprimaryChannel = PI_DEFAULT_DMA_PRIMARY_CH_2711;
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else
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gpioCfg.DMAprimaryChannel = PI_DEFAULT_DMA_PRIMARY_CHANNEL;
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}
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if (gpioCfg.DMAsecondaryChannel == PI_DEFAULT_DMA_NOT_SET)
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{
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if (pi_is_2711)
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gpioCfg.DMAsecondaryChannel = PI_DEFAULT_DMA_SECONDARY_CH_2711;
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else
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gpioCfg.DMAsecondaryChannel = PI_DEFAULT_DMA_SECONDARY_CHANNEL;
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}
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dmaIn = dmaReg + (gpioCfg.DMAprimaryChannel * 0x40);
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dmaOut = dmaReg + (gpioCfg.DMAsecondaryChannel * 0x40);
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DBG(DBG_STARTUP, "DMA #%d @ %08"PRIXPTR,
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gpioCfg.DMAprimaryChannel, (uintptr_t)dmaIn);
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DBG(DBG_STARTUP, "debug reg is %08X", dmaIn[DMA_DEBUG]);
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@ -7780,7 +7800,7 @@ static void initClock(int mainClock)
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}
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clkSrc = CLK_CTL_SRC_PLLD;
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clkDivI = 50 * micros; /* 10 MHz - 1 MHz */
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clkDivI = clk_plld_freq / (10000000 / micros); /* 10 MHz - 1 MHz */
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clkBits = BITS; /* 10/BITS MHz - 1/BITS MHz */
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clkDivF = 0;
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clkMash = 0;
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@ -8732,6 +8752,10 @@ int gpioGetMode(unsigned gpio)
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int gpioSetPullUpDown(unsigned gpio, unsigned pud)
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{
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int shift = (gpio & 0xf) << 1;
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uint32_t bits;
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uint32_t pull;
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DBG(DBG_USER, "gpio=%d pud=%d", gpio, pud);
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CHECK_INITED;
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@ -8742,17 +8766,34 @@ int gpioSetPullUpDown(unsigned gpio, unsigned pud)
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if (pud > PI_PUD_UP)
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SOFT_ERROR(PI_BAD_PUD, "gpio %d, bad pud (%d)", gpio, pud);
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*(gpioReg + GPPUD) = pud;
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if (pi_is_2711)
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{
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switch (pud)
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{
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case PI_PUD_OFF: pull = 0; break;
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case PI_PUD_UP: pull = 1; break;
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case PI_PUD_DOWN: pull = 2; break;
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}
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myGpioDelay(1);
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bits = *(gpioReg + GPPUPPDN0 + (gpio>>4));
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bits &= ~(3 << shift);
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bits |= (pull << shift);
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*(gpioReg + GPPUPPDN0 + (gpio>>4)) = bits;
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}
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else
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{
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*(gpioReg + GPPUD) = pud;
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*(gpioReg + GPPUDCLK0 + BANK) = BIT;
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myGpioDelay(1);
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myGpioDelay(1);
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*(gpioReg + GPPUDCLK0 + BANK) = BIT;
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*(gpioReg + GPPUD) = 0;
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myGpioDelay(1);
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*(gpioReg + GPPUDCLK0 + BANK) = 0;
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*(gpioReg + GPPUD) = 0;
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*(gpioReg + GPPUDCLK0 + BANK) = 0;
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}
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return 0;
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}
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@ -12611,7 +12652,7 @@ int gpioHardwareClock(unsigned gpio, unsigned frequency)
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int cctl[] = {CLK_GP0_CTL, CLK_GP1_CTL, CLK_GP2_CTL};
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int cdiv[] = {CLK_GP0_DIV, CLK_GP1_DIV, CLK_GP2_DIV};
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int csrc[CLK_SRCS] = {CLK_CTL_SRC_OSC, CLK_CTL_SRC_PLLD};
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uint32_t cfreq[CLK_SRCS]={CLK_OSC_FREQ, CLK_PLLD_FREQ};
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uint32_t cfreq[CLK_SRCS]={CLK_OSC_FREQ, clk_plld_freq};
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unsigned clock, mode, mash;
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int password = 0;
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double f;
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@ -12722,13 +12763,13 @@ int gpioHardwarePWM(
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if (frequency)
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{
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real_range = ((double)CLK_PLLD_FREQ / (2.0 * frequency)) + 0.5;
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real_range = ((double)clk_plld_freq / (2.0 * frequency)) + 0.5;
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real_dutycycle = ((uint64_t)dutycycle * real_range) / PI_HW_PWM_RANGE;
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/* record the set PWM frequency and dutycycle */
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hw_pwm_freq[pwm] =
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((double)CLK_PLLD_FREQ / ( 2.0 * real_range)) + 0.5;
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((double)clk_plld_freq / ( 2.0 * real_range)) + 0.5;
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hw_pwm_duty[pwm] = dutycycle;
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@ -13391,9 +13432,15 @@ unsigned gpioHardwareRevision(void)
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}
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}
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if (!strncasecmp("hardware\t: BCM", buf, 14)) {
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if (!strncasecmp("hardware\t: BCM", buf, 14))
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{
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int bcmno = atoi(buf+14);
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if ((bcmno == 2708) || (bcmno == 2709) || (bcmno == 2710) || (bcmno == 2835) || (bcmno == 2836) || (bcmno == 2837))
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if ((bcmno == 2708) ||
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(bcmno == 2709) ||
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(bcmno == 2710) ||
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(bcmno == 2835) ||
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(bcmno == 2836) ||
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(bcmno == 2837))
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{
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pi_ispi = 1;
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}
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@ -13405,12 +13452,37 @@ unsigned gpioHardwareRevision(void)
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{
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if (term != '\n') rev = 0;
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else rev &= 0xFFFFFF; /* mask out warranty bit */
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switch (rev&0xFFF0) /* just interested in BCM model */
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{
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case 0x3110: /* Pi4B */
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piCores = 4;
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pi_peri_phys = 0xFE000000;
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pi_dram_bus = 0xC0000000;
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pi_mem_flag = 0x04;
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pi_is_2711 = 1;
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pi_ispi = 1;
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clk_plld_freq = CLK_PLLD_FREQ_2711;
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fclose(filp);
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if (!gpioMaskSet)
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{
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gpioMaskSet = 1;
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gpioMask = PI_DEFAULT_UPDATE_MASK_PI4B;
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}
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return rev;
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break;
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}
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}
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}
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}
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fclose(filp);
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//raspberry pi 3 running arm64 don't put all the information we need in /proc/cpuinfo, but we can get it elsewhere.
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/*
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Raspberry pi 3 running arm64 don't put all the
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information we need in /proc/cpuinfo, but we can
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get it elsewhere.
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*/
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if (!pi_ispi)
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{
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filp = fopen ("/proc/device-tree/model", "r");
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@ -13430,6 +13502,7 @@ unsigned gpioHardwareRevision(void)
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}
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fclose(filp);
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}
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if (rev == 0)
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{
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filp = fopen ("/proc/device-tree/system/linux,revision", "r");
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@ -13438,8 +13511,11 @@ unsigned gpioHardwareRevision(void)
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uint32_t tmp;
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if (fread(&tmp,1 , 4, filp) == 4)
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{
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// for some reason the value returned by reading this
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// /proc entry seems to be big endian, convert it.
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/*
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for some reason the value returned by reading
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this /proc entry seems to be big endian,
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convert it.
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*/
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rev = ntohl(tmp);
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rev &= 0xFFFFFF; /* mask out warranty bit */
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}
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@ -13523,7 +13599,8 @@ int gpioCfgDMAchannels(unsigned primaryChannel, unsigned secondaryChannel)
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primaryChannel);
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if ((secondaryChannel > PI_MAX_DMA_CHANNEL) ||
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(secondaryChannel == primaryChannel))
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((secondaryChannel == primaryChannel) &&
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(secondaryChannel != PI_DEFAULT_DMA_NOT_SET)))
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SOFT_ERROR(PI_BAD_SECO_CHANNEL, "bad secondary channel (%d)",
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secondaryChannel);
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35
pigpio.h
35
pigpio.h
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@ -31,7 +31,7 @@ For more information, please refer to <http://unlicense.org/>
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#include <stdint.h>
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#include <pthread.h>
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#define PIGPIO_VERSION 68
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#define PIGPIO_VERSION 6904
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/*TEXT
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@ -831,10 +831,10 @@ typedef void *(gpioThreadFunc_t) (void *);
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#define PI_CLOCK_PWM 0
|
||||
#define PI_CLOCK_PCM 1
|
||||
|
||||
/* DMA channel: 0-14 */
|
||||
/* DMA channel: 0-15, 15 is unset */
|
||||
|
||||
#define PI_MIN_DMA_CHANNEL 0
|
||||
#define PI_MAX_DMA_CHANNEL 14
|
||||
#define PI_MAX_DMA_CHANNEL 15
|
||||
|
||||
/* port */
|
||||
|
||||
|
|
@ -4745,8 +4745,7 @@ D*/
|
|||
|
||||
|
||||
/*F*/
|
||||
int gpioCfgDMAchannels(
|
||||
unsigned primaryChannel, unsigned secondaryChannel);
|
||||
int gpioCfgDMAchannels(unsigned primaryChannel, unsigned secondaryChannel);
|
||||
/*D
|
||||
Configures pigpio to use the specified DMA channels.
|
||||
|
||||
|
|
@ -4757,8 +4756,14 @@ This function is only effective if called before [*gpioInitialise*].
|
|||
secondaryChannel: 0-14
|
||||
. .
|
||||
|
||||
The default setting is to use channel 14 for the primary channel and
|
||||
channel 6 for the secondary channel.
|
||||
The default setting depends on whether the Pi has a BCM2711 chip or
|
||||
not (currently only the Pi4B has a BCM2711).
|
||||
|
||||
The default setting for a non-BCM2711 is to use channel 14 for the
|
||||
primary channel and channel 6 for the secondary channel.
|
||||
|
||||
The default setting for a BCM2711 is to use channel 7 for the
|
||||
primary channel and channel 6 for the secondary channel.
|
||||
|
||||
The secondary channel is only used for the transmission of waves.
|
||||
|
||||
|
|
@ -5331,10 +5336,10 @@ PI_MIN_WAVE_DATABITS 1
|
|||
PI_MAX_WAVE_DATABITS 32
|
||||
. .
|
||||
|
||||
DMAchannel::0-14
|
||||
DMAchannel::0-15
|
||||
. .
|
||||
PI_MIN_DMA_CHANNEL 0
|
||||
PI_MAX_DMA_CHANNEL 14
|
||||
PI_MAX_DMA_CHANNEL 15
|
||||
. .
|
||||
|
||||
double::
|
||||
|
|
@ -5718,7 +5723,7 @@ The port used to bind to the pigpio socket. Defaults to 8888.
|
|||
pos::
|
||||
The position of an item.
|
||||
|
||||
primaryChannel:: 0-14
|
||||
primaryChannel:: 0-15
|
||||
The DMA channel used to time the sampling of GPIO and to time servo and
|
||||
PWM pulses.
|
||||
|
||||
|
|
@ -6301,11 +6306,11 @@ after this command is issued.
|
|||
#define PI_NO_HANDLE -24 // no handle available
|
||||
#define PI_BAD_HANDLE -25 // unknown handle
|
||||
#define PI_BAD_IF_FLAGS -26 // ifFlags > 4
|
||||
#define PI_BAD_CHANNEL -27 // DMA channel not 0-14
|
||||
#define PI_BAD_PRIM_CHANNEL -27 // DMA primary channel not 0-14
|
||||
#define PI_BAD_CHANNEL -27 // DMA channel not 0-15
|
||||
#define PI_BAD_PRIM_CHANNEL -27 // DMA primary channel not 0-15
|
||||
#define PI_BAD_SOCKET_PORT -28 // socket port not 1024-32000
|
||||
#define PI_BAD_FIFO_COMMAND -29 // unrecognized fifo command
|
||||
#define PI_BAD_SECO_CHANNEL -30 // DMA secondary channel not 0-6
|
||||
#define PI_BAD_SECO_CHANNEL -30 // DMA secondary channel not 0-15
|
||||
#define PI_NOT_INITIALISED -31 // function called before gpioInitialise
|
||||
#define PI_INITIALISED -32 // function called after gpioInitialise
|
||||
#define PI_BAD_WAVE_MODE -33 // waveform mode not 0-3
|
||||
|
|
@ -6440,6 +6445,9 @@ after this command is issued.
|
|||
#define PI_DEFAULT_DMA_CHANNEL 14
|
||||
#define PI_DEFAULT_DMA_PRIMARY_CHANNEL 14
|
||||
#define PI_DEFAULT_DMA_SECONDARY_CHANNEL 6
|
||||
#define PI_DEFAULT_DMA_PRIMARY_CH_2711 7
|
||||
#define PI_DEFAULT_DMA_SECONDARY_CH_2711 6
|
||||
#define PI_DEFAULT_DMA_NOT_SET 15
|
||||
#define PI_DEFAULT_SOCKET_PORT 8888
|
||||
#define PI_DEFAULT_SOCKET_PORT_STR "8888"
|
||||
#define PI_DEFAULT_SOCKET_ADDR_STR "127.0.0.1"
|
||||
|
|
@ -6450,6 +6458,7 @@ after this command is issued.
|
|||
#define PI_DEFAULT_UPDATE_MASK_ZERO 0x0080000FFFFFFCLL
|
||||
#define PI_DEFAULT_UPDATE_MASK_PI2B 0x0080480FFFFFFCLL
|
||||
#define PI_DEFAULT_UPDATE_MASK_PI3B 0x0000000FFFFFFCLL
|
||||
#define PI_DEFAULT_UPDATE_MASK_PI4B 0x0000000FFFFFFCLL
|
||||
#define PI_DEFAULT_UPDATE_MASK_COMPUTE 0x00FFFFFFFFFFFFLL
|
||||
#define PI_DEFAULT_MEM_ALLOC_MODE PI_MEM_ALLOC_AUTO
|
||||
|
||||
|
|
|
|||
|
|
@ -26,7 +26,7 @@ For more information, please refer to <http://unlicense.org/>
|
|||
*/
|
||||
|
||||
/*
|
||||
This version is for pigpio version 65+
|
||||
This version is for pigpio version 69+
|
||||
*/
|
||||
|
||||
#include <sys/types.h>
|
||||
|
|
@ -56,8 +56,8 @@ static unsigned clockMicros = PI_DEFAULT_CLK_MICROS;
|
|||
static unsigned clockPeripheral = PI_DEFAULT_CLK_PERIPHERAL;
|
||||
static unsigned ifFlags = PI_DEFAULT_IF_FLAGS;
|
||||
static int foreground = PI_DEFAULT_FOREGROUND;
|
||||
static unsigned DMAprimaryChannel = PI_DEFAULT_DMA_PRIMARY_CHANNEL;
|
||||
static unsigned DMAsecondaryChannel = PI_DEFAULT_DMA_SECONDARY_CHANNEL;
|
||||
static unsigned DMAprimaryChannel = PI_DEFAULT_DMA_NOT_SET;
|
||||
static unsigned DMAsecondaryChannel = PI_DEFAULT_DMA_NOT_SET;
|
||||
static unsigned socketPort = PI_DEFAULT_SOCKET_PORT;
|
||||
static unsigned memAllocMode = PI_DEFAULT_MEM_ALLOC_MODE;
|
||||
static uint64_t updateMask = -1;
|
||||
|
|
|
|||
Loading…
Reference in New Issue