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rp2pio: Add pull up/down support for the "jmp pin"

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This is needed so that the floppy flux reader can enable the pull up
on the index pin while using it as a pio jmp pin.

Also fixes a doc bug where the `jmp_pin` was omitted in one spot in the docs.
This commit is contained in:
Jeff Epler 2022-02-01 10:19:17 -06:00
parent 8e895e1986
commit bf57f3606a
No known key found for this signature in database
GPG Key ID: D5BF15AB975AB4DE
8 changed files with 26 additions and 9 deletions
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9
ports/raspberrypi/bindings/rp2pio/StateMachine.c
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@ -79,6 +79,8 @@
//| initial_sideset_pin_state: int = 0,
//| initial_sideset_pin_direction: int = 0x1f,
//| sideset_enable: bool = False,
//| jmp_pin: Optional[microcontroller.Pin] = None,
//| jmp_pin_pull: Optional[digitalio.Pull] = None,
//| exclusive_pin_use: bool = True,
//| auto_pull: bool = False,
//| pull_threshold: int = 32,
@ -113,6 +115,7 @@
//| :param int initial_sideset_pin_direction: the initial output direction for sideset pins starting at first_sideset_pin
//| :param bool sideset_enable: True when the top sideset bit is to enable. This should be used with the ".side_set # opt" directive
//| :param ~microcontroller.Pin jmp_pin: the pin which determines the branch taken by JMP PIN instructions
//| :param ~digitalio.Pull jmp_pin_pull: The pull value for the jmp pin, default is no pull.
//| :param bool exclusive_pin_use: When True, do not share any pins with other state machines. Pins are never shared with other peripherals
//| :param bool auto_pull: When True, automatically load data from the tx FIFO into the
//| output shift register (OSR) when an OUT instruction shifts more than pull_threshold bits
@ -150,7 +153,7 @@ STATIC mp_obj_t rp2pio_statemachine_make_new(const mp_obj_type_t *type, size_t n
ARG_first_set_pin, ARG_set_pin_count, ARG_initial_set_pin_state, ARG_initial_set_pin_direction,
ARG_first_sideset_pin, ARG_sideset_pin_count, ARG_initial_sideset_pin_state, ARG_initial_sideset_pin_direction,
ARG_sideset_enable,
ARG_jmp_pin,
ARG_jmp_pin, ARG_jmp_pin_pull,
ARG_exclusive_pin_use,
ARG_auto_pull, ARG_pull_threshold, ARG_out_shift_right,
ARG_wait_for_txstall,
@ -184,6 +187,7 @@ STATIC mp_obj_t rp2pio_statemachine_make_new(const mp_obj_type_t *type, size_t n
{ MP_QSTR_sideset_enable, MP_ARG_KW_ONLY | MP_ARG_BOOL, {.u_bool = false} },
{ MP_QSTR_jmp_pin, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = mp_const_none} },
{ MP_QSTR_jmp_pin_pull, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = mp_const_none} },
{ MP_QSTR_exclusive_pin_use, MP_ARG_KW_ONLY | MP_ARG_BOOL, {.u_bool = true} },
{ MP_QSTR_auto_pull, MP_ARG_KW_ONLY | MP_ARG_BOOL, {.u_bool = false} },
@ -230,6 +234,7 @@ STATIC mp_obj_t rp2pio_statemachine_make_new(const mp_obj_type_t *type, size_t n
}
const mcu_pin_obj_t *jmp_pin = validate_obj_is_pin_or_none(args[ARG_jmp_pin].u_obj);
digitalio_pull_t jmp_pin_pull = validate_pull(args[ARG_jmp_pin_pull].u_rom_obj, MP_QSTR_jmp_pull);
mp_int_t pull_threshold = args[ARG_pull_threshold].u_int;
mp_int_t push_threshold = args[ARG_push_threshold].u_int;
@ -263,7 +268,7 @@ STATIC mp_obj_t rp2pio_statemachine_make_new(const mp_obj_type_t *type, size_t n
first_set_pin, args[ARG_set_pin_count].u_int, args[ARG_initial_set_pin_state].u_int, args[ARG_initial_set_pin_direction].u_int,
first_sideset_pin, args[ARG_sideset_pin_count].u_int, args[ARG_initial_sideset_pin_state].u_int, args[ARG_initial_sideset_pin_direction].u_int,
args[ARG_sideset_enable].u_bool,
jmp_pin,
jmp_pin, jmp_pin_pull,
0,
args[ARG_exclusive_pin_use].u_bool,
args[ARG_auto_pull].u_bool, pull_threshold, args[ARG_out_shift_right].u_bool,

3
ports/raspberrypi/bindings/rp2pio/StateMachine.h
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@ -29,6 +29,7 @@
#include "py/obj.h"
#include "shared-bindings/digitalio/Pull.h"
#include "common-hal/microcontroller/Pin.h"
#include "common-hal/rp2pio/StateMachine.h"
@ -45,7 +46,7 @@ void common_hal_rp2pio_statemachine_construct(rp2pio_statemachine_obj_t *self,
const mcu_pin_obj_t *first_set_pin, uint8_t set_pin_count, uint32_t initial_set_pin_state, uint32_t initial_set_pin_direction,
const mcu_pin_obj_t *first_sideset_pin, uint8_t sideset_pin_count, uint32_t initial_sideset_pin_state, uint32_t initial_sideset_pin_direction,
bool sideset_enable,
const mcu_pin_obj_t *jmp_pin,
const mcu_pin_obj_t *jmp_pin, digitalio_pull_t jmp_pin_pull,
uint32_t wait_gpio_mask,
bool exclusive_pin_use,
bool auto_pull, uint8_t pull_threshold, bool out_shift_right,

2
ports/raspberrypi/common-hal/audiobusio/I2SOut.c
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@ -127,7 +127,7 @@ void common_hal_audiobusio_i2sout_construct(audiobusio_i2sout_obj_t *self,
0, 0, // in pulls
NULL, 0, 0, 0x1f, // set pins
bit_clock, 2, 0, 0x1f, // sideset pins
NULL, // jump pin
NULL, PULL_NONE, // jump pin
0, // wait gpio pins
true, // exclusive pin use
false, 32, false, // shift out left to start with MSB

2
ports/raspberrypi/common-hal/audiobusio/PDMIn.c
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@ -71,7 +71,7 @@ void common_hal_audiobusio_pdmin_construct(audiobusio_pdmin_obj_t *self,
0, 0, // in pulls
NULL, 0, 0, 0x1f, // set pins
clock_pin, 1, 0, 0x1f, // sideset pins
NULL, // jump pin
NULL, PULL_NONE, // jump pin
0, // wait gpio pins
true, // exclusive pin use
false, 32, false, // out settings

2
ports/raspberrypi/common-hal/imagecapture/ParallelImageCapture.c
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@ -112,7 +112,7 @@ void common_hal_imagecapture_parallelimagecapture_construct(imagecapture_paralle
NULL, 0, 0, 0, // sideset pins
#endif
false, // No sideset enable
NULL, // jump pin
NULL, PULL_NONE, // jump pin
(1 << vertical_sync->number) | (1 << horizontal_reference->number) | (1 << data_clock->number), // wait gpio pins
true, // exclusive pin use
false, 32, false, // out settings

2
ports/raspberrypi/common-hal/paralleldisplay/ParallelBus.c
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@ -100,7 +100,7 @@ void common_hal_paralleldisplay_parallelbus_construct(paralleldisplay_parallelbu
NULL, 0, 0, 0, // first set pin
write, 1, 0, 1, // first sideset pin
false, // No sideset enable
NULL, // jump pin
NULL, PULL_NONE, // jump pin
0, // wait gpio pins
true, // exclusive pin usage
true, 8, true, // TX, auto pull every 8 bits. shift left to output msb first

2
ports/raspberrypi/common-hal/rotaryio/IncrementalEncoder.c
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@ -86,7 +86,7 @@ void common_hal_rotaryio_incrementalencoder_construct(rotaryio_incrementalencode
NULL, 0, 0, 0x1f, // set pins
NULL, 0, 0, 0x1f, // sideset pins
false, // No sideset enable
NULL, // jump pin
NULL, PULL_NONE, // jump pin
0, // wait gpio pins
true, // exclusive pin use
false, 32, false, // out settings

13
ports/raspberrypi/common-hal/rp2pio/StateMachine.c
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@ -27,6 +27,7 @@
#include "bindings/rp2pio/StateMachine.h"
#include "common-hal/microcontroller/__init__.h"
#include "shared-bindings/digitalio/Pull.h"
#include "shared-bindings/microcontroller/__init__.h"
#include "shared-bindings/microcontroller/Pin.h"
@ -342,7 +343,7 @@ void common_hal_rp2pio_statemachine_construct(rp2pio_statemachine_obj_t *self,
const mcu_pin_obj_t *first_set_pin, uint8_t set_pin_count, uint32_t initial_set_pin_state, uint32_t initial_set_pin_direction,
const mcu_pin_obj_t *first_sideset_pin, uint8_t sideset_pin_count, uint32_t initial_sideset_pin_state, uint32_t initial_sideset_pin_direction,
bool sideset_enable,
const mcu_pin_obj_t *jmp_pin,
const mcu_pin_obj_t *jmp_pin, digitalio_pull_t jmp_pull,
uint32_t wait_gpio_mask,
bool exclusive_pin_use,
bool auto_pull, uint8_t pull_threshold, bool out_shift_right,
@ -489,6 +490,16 @@ void common_hal_rp2pio_statemachine_construct(rp2pio_statemachine_obj_t *self,
// Deal with pull up/downs
uint32_t pull_up = mask_and_rotate(first_in_pin, in_pin_count, pull_pin_up);
uint32_t pull_down = mask_and_rotate(first_in_pin, in_pin_count, pull_pin_down);
if (jmp_pin) {
uint32_t jmp_mask = mask_and_rotate(jmp_pin, 1, 0x1f);
if (jmp_pull == PULL_UP) {
pull_up |= jmp_mask;
}
if (jmp_pull == PULL_DOWN) {
pull_up |= jmp_mask;
}
}
if (initial_pin_direction & (pull_up | pull_down)) {
mp_raise_ValueError(translate("pull masks conflict with direction masks"));
}