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wings.s
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/**
* @brief
* Wings Support Package.
*
* Adafruit wing boards.
* @file
* bsp.s
* @author
* Peter Schmid, peter@spyr.ch
* @date
* 2020-03-26
* @remark
* Language: ARM Assembler, STM32CubeIDE GCC
* @copyright
* Peter Schmid, Switzerland
*
* This project Mecrsip-Cube is free software: you can redistribute it
* and/or modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* Mecrsip-Cube is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Mecrsip-Cube. If not, see http://www.gnu.org/licenses/.
*/
@ -----------------------------------------------------------------------------
Wortbirne Flag_visible, "neopixel!"
set_neopixel:
@ ( n -- ) set neopixel (rgb)
@ -----------------------------------------------------------------------------
push {lr}
movs r0, tos
drop
bl BSP_setNeoPixel
pop {pc}
@ -----------------------------------------------------------------------------
Wortbirne Flag_visible, "neopixel@"
get_neopixel:
@ ( -- n ) get neopixel (rgb)
@ -----------------------------------------------------------------------------
push {lr}
pushdatos
bl BSP_getNeoPixel
movs tos, r0
pop {pc}
@ -----------------------------------------------------------------------------
Wortbirne Flag_visible, "neopixels"
neopixels:
@ ( addr len -- ) set neopixels
// void BSP_setNeoPixels(uint32_t *buffer, unit32_t len)
@ -----------------------------------------------------------------------------
push {lr}
movs r1, tos // len
drop
movs r0, tos // buffer
drop
bl BSP_setNeoPixels
pop {pc}
/*
void BSP_neopixelDataTx(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin, uint32_t rgb);
R0 R1 R2
Cycle = 1 / 168 MHz = 6 ns
*/
.ltorg
.equ T0H, 16 // 0.3 us
.equ T1H, 40 // 0.8 us
.equ T0L, 36 // 0.8 us
.equ T1L, 12 // 0.3 us
// Registers
.equ GPIO_BSRR, 0x18 // GPIOx->BSRR bit set/reset
.global BSP_neopixelDataTx
BSP_neopixelDataTx:
push {r4-r6, lr}
lsl r2, r2, #8 // r2 = rrggbb00
mov r3, r2 // r3 = rrggbb00
bfc r3, #16, #16 // r3 = 0000bb00
rev16 r2, r2 // r2 = ggrr00bb
bfc r2, #0, #16 // r2 = ggrr0000
add r2, r2, r3 // r2 = ggrrbb00
lsl r3, r1, #16 // clear port pin for BSRR
mov r6, #24 // 24 bits
bit_loop:
lsls r2, r2, #1 // get the next bit -> set the carry bit
ittee cs
movcs r4, #T1H
movcs r5, #T1L
movcc r4, #T0H
movcc r5, #T0L
// set DOUT pin high
str r1, [r0, #GPIO_BSRR]
1: subs r4, r4, #1
bne 1b
// set DOUT pin low
str r3, [r0, #GPIO_BSRR]
2: subs r5, r5, #1
bne 2b
subs r6, r6, #1
bne bit_loop
pop {r4-r6, pc}
/*
void BSP_neopixelBufferTx(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin, uint32_t *buffer, uint32_t len);
R0 R1 R2 rgb R3
Cycle = 1 / 168 MHz = 6 ns
R0 GPIOx
R1 GPIO_Pin set
R2 *buffer
R3 pixels
R4 high time
R5 low time
R6 bit count
R7 bits
R8 GPIO_Pin reset
*/
.global BSP_neopixelBufferTx
BSP_neopixelBufferTx:
push {r4-r8, lr}
lsl r8, r1, #16 // clear port pin for BSRR
pixel_loop:
ldr r7, [r2] // r7 = 00rrggbb
lsl r7, r7, #8 // r7 = rrggbb00
mov r6, r7 // r6 = rrggbb00
bfc r6, #16, #16 // r6 = 0000bb00
rev16 r7, r7 // r7 = ggrr00bb
bfc r7, #0, #16 // r7 = ggrr0000
add r7, r7, r6 // r7 = ggrrbb00
mov r6, #24 // 24 bits
bit_loop2:
lsls r7, r7, #1 // get the next bit -> set the carry bit
ittee cs
movcs r4, #T1H
movcs r5, #T1L
movcc r4, #T0H
movcc r5, #T0L
// set DOUT pin high
str r1, [r0, #GPIO_BSRR]
1: subs r4, r4, #1
bne 1b
// set DOUT pin low
str r8, [r0, #GPIO_BSRR]
2: subs r5, r5, #1
bne 2b
subs r6, r6, #1
bne bit_loop2
add r2, r2, #4
subs r3, r3, #1
bne pixel_loop
pop {r4-r8, pc}
// PLEX words only if needed
.if PLEX == 1
@ -----------------------------------------------------------------------------
Wortbirne Flag_visible, "plex-emit"
plex_emit:
@ ( c -- ) Emit one character
// void OLED_sendChar(char ch)
@ -----------------------------------------------------------------------------
push {lr}
movs r0, tos
drop
bl PLEX_putc
pop {pc}
@ -----------------------------------------------------------------------------
Wortbirne Flag_visible, "plex-emit?"
plex_qemit:
@ ( -- ? ) Ready to send a character ?
@ -----------------------------------------------------------------------------
push {lr}
pushdatos
bl PLEX_Ready
movs tos, r0
pop {pc}
@ -----------------------------------------------------------------------------
Wortbirne Flag_visible, "plexpos!"
plex_get_pos:
@ ( x -- ) Set OLED position
// void PLEX_setPos(uint8_t x)
@ -----------------------------------------------------------------------------
push {lr}
movs r0, tos // x
drop
bl PLEX_setPos
pop {pc}
@ -----------------------------------------------------------------------------
Wortbirne Flag_visible, "plexpos@"
plex_set_pos:
@ ( -- x ) Get OLED position
// void PLEX_getPos(uint8_t x)
@ -----------------------------------------------------------------------------
push {lr}
pushdatos
bl PLEX_getPosX
movs tos, r0 // x
pushdatos
pop {pc}
@ -----------------------------------------------------------------------------
Wortbirne Flag_visible, "plexshutdown"
plexshutdown:
@ ( u -- )
// void PLEX_shutdown(uint8_t status)
@ -----------------------------------------------------------------------------
push {lr}
movs r0, tos // leds
drop
bl PLEX_shutdown
pop {pc}
@ -----------------------------------------------------------------------------
Wortbirne Flag_visible, "plexclr"
plexclr:
@ ( -- )
// void PLEX_clear(void);
@ -----------------------------------------------------------------------------
push {lr}
bl PLEX_clear
pop {pc}
@ -----------------------------------------------------------------------------
Wortbirne Flag_visible, "plexfont"
plexfont:
@ ( u -- ) select font for the Plex
// void PLEX_setFont(OLED_FontT font);
@ -----------------------------------------------------------------------------
push {lr}
movs r0, tos // font
drop
bl PLEX_setFont
pop {pc}
@ -----------------------------------------------------------------------------
Wortbirne Flag_visible, "plexpwm"
plexpwm:
@ ( u -- ) select PWM (brightness) for the Plex emit
// void PLEX_setPWM(int PWM)
@ -----------------------------------------------------------------------------
push {lr}
movs r0, tos // font
drop
bl PLEX_setPWM
pop {pc}
@ -----------------------------------------------------------------------------
Wortbirne Flag_visible, "plexcolumn!"
set_plexcolumn:
@ ( u1 u2 u3 -- )
// void PLEX_setColumn(uint8_t col, uint8_t leds, int brightness)
@ -----------------------------------------------------------------------------
push {lr}
movs r2, tos // brightness
drop
movs r1, tos // leds
drop
movs r0, tos // col
drop
bl PLEX_setColumn
pop {pc}
@ -----------------------------------------------------------------------------
Wortbirne Flag_visible, "plexcolumn@"
get_plexcolumn:
@ ( u -- )
// int PLEX_getColumn(uint8_t col)
@ -----------------------------------------------------------------------------
push {lr}
movs r0, tos // col
bl PLEX_getColumn
movs tos, r0
pop {pc}
@ -----------------------------------------------------------------------------
Wortbirne Flag_visible, "plexpixel!"
set_plexpixel:
@ ( u1 u2 u3 -- )
// void PLEX_setPixel(uint8_t x, uint8_t y, int brightness
@ -----------------------------------------------------------------------------
push {lr}
movs r2, tos // brightness
drop
movs r1, tos // y
drop
movs r0, tos // x
drop
bl PLEX_setPixel
pop {pc}
@ -----------------------------------------------------------------------------
Wortbirne Flag_visible, "plexpixel@"
get_plexpixel:
@ ( u -- )
// int PLEX_getPixel(uint8_t col, uint8_t row)
@ -----------------------------------------------------------------------------
push {lr}
movs r0, tos // col
bl PLEX_getPixel
movs tos, r0
pop {pc}
@ -----------------------------------------------------------------------------
Wortbirne Flag_visible, "plexframe!"
set_plexframe:
@ ( u -- )
// void PLEX_setFrame(uint8_t frame)
@ -----------------------------------------------------------------------------
push {lr}
movs r0, tos // frame
drop
bl PLEX_setFrame
pop {pc}
@ -----------------------------------------------------------------------------
Wortbirne Flag_visible, "plexframe@"
get_plexframe:
@ ( u -- )
// int PLEX_getFrame(void);
@ -----------------------------------------------------------------------------
push {lr}
bl PLEX_getFrame
pushdatos
movs tos, r0 // frame
pop {pc}
@ -----------------------------------------------------------------------------
Wortbirne Flag_visible, "plexdisplay!"
set_plexdisplay:
@ ( u -- )
// void PLEX_setDisplay(uint8_t frame)
@ -----------------------------------------------------------------------------
push {lr}
movs r0, tos // frame
drop
bl PLEX_setDisplay
pop {pc}
@ -----------------------------------------------------------------------------
Wortbirne Flag_visible, "plexdisplay@"
get_plexdisplay:
@ ( u -- )
// int PLEX_getDisplay(void);
@ -----------------------------------------------------------------------------
push {lr}
bl PLEX_getDisplay
pushdatos
movs tos, r0 // frame
pop {pc}
.endif // PLEX
// DOTSTAR words only if needed
.if DOTSTAR == 1
@ -----------------------------------------------------------------------------
Wortbirne Flag_visible, "dotstarpixel!"
set_dotstarpixel:
@ ( u -- ) set dotstar pixel (irgb)
// void DOTSTAR_setPixel(uint32_t irgb)
@ -----------------------------------------------------------------------------
push {lr}
movs r0, tos
drop
bl DOTSTAR_setPixel
pop {pc}
@ -----------------------------------------------------------------------------
Wortbirne Flag_visible, "dotstarpixels"
dotstarpixels:
@ ( addr len -- ) set dotstar pixels
// void DOTSTAR_setPixels(uint32_t *buffer, uint32_t len)
@ -----------------------------------------------------------------------------
push {lr}
movs r1, tos // len
drop
movs r0, tos // buffer
drop
bl DOTSTAR_setPixels
pop {pc}
.endif // DOTSTAR