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GFX : wait end of transfert using a task notification. 

Code cleaning in SpiMaster.
main
JF 2020-01-26 15:35:18 +07:00
parent 5fa4f5abe0
commit 640e8cd1fe
4 changed files with 82 additions and 63 deletions
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27
src/Components/Gfx/Gfx.cpp
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@ -1,4 +1,6 @@
#include <libraries/svc/nrf_svci.h>
#include <FreeRTOS.h>
#include <task.h>
#include "Gfx.h"
#include "../../drivers/St7789.h"
using namespace Pinetime::Components;
@ -17,10 +19,12 @@ void Gfx::ClearScreen() {
state.currentIteration = 0;
state.busy = true;
state.action = Action::FillRectangle;
state.taskToNotify = xTaskGetCurrentTaskHandle();
lcd.BeginDrawBuffer(0, 0, width, height);
lcd.NextDrawBuffer(reinterpret_cast<const uint8_t *>(buffer), width * 2);
while(state.busy) {} // TODO wait on an event/queue/... instead of polling
WaitTransfertFinished();
}
void Gfx::FillRectangle(uint8_t x, uint8_t y, uint8_t w, uint8_t h, uint16_t color) {
@ -30,10 +34,13 @@ void Gfx::FillRectangle(uint8_t x, uint8_t y, uint8_t w, uint8_t h, uint16_t col
state.currentIteration = 0;
state.busy = true;
state.action = Action::FillRectangle;
state.color = color;
state.taskToNotify = xTaskGetCurrentTaskHandle();
lcd.BeginDrawBuffer(x, y, w, h);
lcd.NextDrawBuffer(reinterpret_cast<const uint8_t *>(buffer), width * 2);
while(state.busy) {} // TODO wait on an event/queue/... instead of polling
WaitTransfertFinished();
}
void Gfx::DrawString(uint8_t x, uint8_t y, uint16_t color, const char *text, const FONT_INFO *p_font, bool wrap) {
@ -100,10 +107,11 @@ void Gfx::DrawChar(const FONT_INFO *font, uint8_t c, uint8_t *x, uint8_t y, uint
state.font = const_cast<FONT_INFO *>(font);
state.character = c;
state.color = color;
state.taskToNotify = xTaskGetCurrentTaskHandle();
lcd.BeginDrawBuffer(*x, y, bytes_in_line*8, font->height);
lcd.NextDrawBuffer(reinterpret_cast<const uint8_t *>(&buffer), bytes_in_line*8*2);
while(state.busy) {} // TODO wait on an event/queue/... instead of polling
WaitTransfertFinished();
*x += font->charInfo[char_idx].widthBits + font->spacePixels;
}
@ -131,6 +139,7 @@ bool Gfx::GetNextBuffer(uint8_t **data, size_t &size) {
state.remainingIterations--;
if (state.remainingIterations == 0) {
state.busy = false;
NotifyEndOfTransfert(state.taskToNotify);
return false;
}
@ -162,4 +171,16 @@ bool Gfx::GetNextBuffer(uint8_t **data, size_t &size) {
return true;
}
void Gfx::NotifyEndOfTransfert(TaskHandle_t task) {
if(task != nullptr) {
BaseType_t xHigherPriorityTaskWoken = pdFALSE;
vTaskNotifyGiveFromISR(task, &xHigherPriorityTaskWoken);
portYIELD_FROM_ISR(xHigherPriorityTaskWoken);
}
}
void Gfx::WaitTransfertFinished() const {
ulTaskNotifyTake(pdTRUE, 500);
}

5
src/Components/Gfx/Gfx.h
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@ -2,6 +2,8 @@
#include <cstdint>
#include <nrf_font.h>
#include <drivers/BufferProvider.h>
#include <FreeRTOS.h>
#include <task.h>
namespace Pinetime {
@ -36,6 +38,7 @@ namespace Pinetime {
volatile FONT_INFO *font;
volatile uint16_t color;
volatile uint8_t character;
volatile TaskHandle_t taskToNotify = nullptr;
};
volatile State state;
@ -45,6 +48,8 @@ namespace Pinetime {
void pixel_draw(uint8_t x, uint8_t y, uint16_t color);
void SetBackgroundColor(uint16_t color);
void WaitTransfertFinished() const;
void NotifyEndOfTransfert(TaskHandle_t task);
};
}
}

109
src/drivers/SpiMaster.cpp
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@ -26,9 +26,9 @@ bool SpiMaster::Init() {
}
/* Configure pins, frequency and mode */
NRF_SPIM0->PSELSCK = params.pinSCK;
NRF_SPIM0->PSELMOSI = params.pinMOSI;
NRF_SPIM0->PSELMISO = params.pinMISO;
spiBaseAddress->PSELSCK = params.pinSCK;
spiBaseAddress->PSELMOSI = params.pinMOSI;
spiBaseAddress->PSELMISO = params.pinMISO;
nrf_gpio_pin_set(pinCsn); /* disable Set slave select (inactive high) */
uint32_t frequency;
@ -36,7 +36,7 @@ bool SpiMaster::Init() {
case Frequencies::Freq8Mhz: frequency = 0x80000000; break;
default: return false;
}
NRF_SPIM0->FREQUENCY = frequency;
spiBaseAddress->FREQUENCY = frequency;
uint32_t regConfig = 0;
switch(params.bitOrder) {
@ -52,26 +52,24 @@ bool SpiMaster::Init() {
default: return false;
}
setup_workaround_for_ftpan_58(NRF_SPIM0, 0, 0);
spiBaseAddress->CONFIG = regConfig;
spiBaseAddress->EVENTS_ENDRX = 0;
spiBaseAddress->EVENTS_ENDTX = 0;
spiBaseAddress->EVENTS_END = 0;
NRF_SPIM0->CONFIG = regConfig;
NRF_SPIM0->EVENTS_ENDRX = 0;
NRF_SPIM0->EVENTS_ENDTX = 0;
NRF_SPIM0->EVENTS_END = 0;
spiBaseAddress->INTENSET = ((unsigned)1 << (unsigned)6);
spiBaseAddress->INTENSET = ((unsigned)1 << (unsigned)1);
spiBaseAddress->INTENSET = ((unsigned)1 << (unsigned)19);
NRF_SPIM0->INTENSET = ((unsigned)1 << (unsigned)6);
NRF_SPIM0->INTENSET = ((unsigned)1 << (unsigned)1);
NRF_SPIM0->INTENSET = ((unsigned)1 << (unsigned)19);
spiBaseAddress->ENABLE = (SPIM_ENABLE_ENABLE_Enabled << SPIM_ENABLE_ENABLE_Pos);
NRF_SPIM0->ENABLE = (SPIM_ENABLE_ENABLE_Enabled << SPIM_ENABLE_ENABLE_Pos);
NRFX_IRQ_PRIORITY_SET(SPIM0_SPIS0_TWIM0_TWIS0_SPI0_TWI0_IRQn,6);
NRFX_IRQ_PRIORITY_SET(SPIM0_SPIS0_TWIM0_TWIS0_SPI0_TWI0_IRQn,2);
NRFX_IRQ_ENABLE(SPIM0_SPIS0_TWIM0_TWIS0_SPI0_TWI0_IRQn);
return true;
}
void SpiMaster::setup_workaround_for_ftpan_58(NRF_SPIM_Type *spim, uint32_t ppi_channel, uint32_t gpiote_channel) {
void SpiMaster::SetupWorkaroundForFtpan58(NRF_SPIM_Type *spim, uint32_t ppi_channel, uint32_t gpiote_channel) {
// Create an event when SCK toggles.
NRF_GPIOTE->CONFIG[gpiote_channel] = (GPIOTE_CONFIG_MODE_Event << GPIOTE_CONFIG_MODE_Pos) |
(spim->PSEL.SCK << GPIOTE_CONFIG_PSEL_Pos) |
@ -81,6 +79,21 @@ void SpiMaster::setup_workaround_for_ftpan_58(NRF_SPIM_Type *spim, uint32_t ppi_
NRF_PPI->CH[ppi_channel].EEP = (uint32_t) &NRF_GPIOTE->EVENTS_IN[gpiote_channel];
NRF_PPI->CH[ppi_channel].TEP = (uint32_t) &spim->TASKS_STOP;
NRF_PPI->CHENSET = 1U << ppi_channel;
// Disable IRQ
spim->INTENCLR = (1<<6);
spim->INTENCLR = (1<<1);
spim->INTENCLR = (1<<19);
}
void SpiMaster::DisableWorkaroundForFtpan58(NRF_SPIM_Type *spim, uint32_t ppi_channel, uint32_t gpiote_channel) {
NRF_GPIOTE->CONFIG[gpiote_channel] = 0;
NRF_PPI->CH[ppi_channel].EEP = 0;
NRF_PPI->CH[ppi_channel].TEP = 0;
NRF_PPI->CHENSET = ppi_channel;
spim->INTENSET = (1<<6);
spim->INTENSET = (1<<1);
spim->INTENSET = (1<<19);
}
void SpiMaster::OnEndEvent(BufferProvider& provider) {
@ -89,19 +102,11 @@ void SpiMaster::OnEndEvent(BufferProvider& provider) {
auto s = currentBufferSize;
if(s > 0) {
auto currentSize = std::min((size_t) 255, s);
NRF_SPIM0->TXD.PTR = (uint32_t) currentBufferAddr;
NRF_SPIM0->TXD.MAXCNT = currentSize;
NRF_SPIM0->TXD.LIST = 0;
PrepareTx(currentBufferAddr, currentSize);
currentBufferAddr += currentSize;
currentBufferSize -= currentSize;
NRF_SPIM0->RXD.PTR = (uint32_t) 0;
NRF_SPIM0->RXD.MAXCNT = 0;
NRF_SPIM0->RXD.LIST = 0;
NRF_SPIM0->TASKS_START = 1;
spiBaseAddress->TASKS_START = 1;
} else {
uint8_t* buffer = nullptr;
size_t size = 0;
@ -110,18 +115,11 @@ void SpiMaster::OnEndEvent(BufferProvider& provider) {
currentBufferSize = size;
auto s = currentBufferSize;
auto currentSize = std::min((size_t)255, s);
NRF_SPIM0->TXD.PTR = (uint32_t) currentBufferAddr;
NRF_SPIM0->TXD.MAXCNT = currentSize;
NRF_SPIM0->TXD.LIST = 0;
PrepareTx(currentBufferAddr, currentSize);
currentBufferAddr += currentSize;
currentBufferSize -= currentSize;
NRF_SPIM0->RXD.PTR = (uint32_t) 0;
NRF_SPIM0->RXD.MAXCNT = 0;
NRF_SPIM0->RXD.LIST = 0;
NRF_SPIM0->TASKS_START = 1;
spiBaseAddress->TASKS_START = 1;
} else {
busy = false;
nrf_gpio_pin_set(pinCsn);
@ -133,6 +131,16 @@ void SpiMaster::OnStartedEvent(BufferProvider& provider) {
if(!busy) return;
}
void SpiMaster::PrepareTx(const volatile uint32_t bufferAddress, const volatile size_t size) {
spiBaseAddress->TXD.PTR = bufferAddress;
spiBaseAddress->TXD.MAXCNT = size;
spiBaseAddress->TXD.LIST = 0;
spiBaseAddress->RXD.PTR = 0;
spiBaseAddress->RXD.MAXCNT = 0;
spiBaseAddress->RXD.LIST = 0;
spiBaseAddress->EVENTS_END = 0;
}
bool SpiMaster::Write(const uint8_t *data, size_t size) {
if(data == nullptr) return false;
@ -141,18 +149,9 @@ bool SpiMaster::Write(const uint8_t *data, size_t size) {
}
if(size == 1) {
setup_workaround_for_ftpan_58(NRF_SPIM0, 0,0);
NRF_SPIM0->INTENCLR = (1<<6);
NRF_SPIM0->INTENCLR = (1<<1);
NRF_SPIM0->INTENCLR = (1<<19);
SetupWorkaroundForFtpan58(spiBaseAddress, 0,0);
} else {
NRF_GPIOTE->CONFIG[0] = 0;
NRF_PPI->CH[0].EEP = 0;
NRF_PPI->CH[0].TEP = 0;
NRF_PPI->CHENSET = 0;
NRF_SPIM0->INTENSET = (1<<6);
NRF_SPIM0->INTENSET = (1<<1);
NRF_SPIM0->INTENSET = (1<<19);
DisableWorkaroundForFtpan58(spiBaseAddress, 0, 0);
}
nrf_gpio_pin_clear(pinCsn);
@ -162,21 +161,13 @@ bool SpiMaster::Write(const uint8_t *data, size_t size) {
busy = true;
auto currentSize = std::min((size_t)255, (size_t)currentBufferSize);
NRF_SPIM0->TXD.PTR = currentBufferAddr;
NRF_SPIM0->TXD.MAXCNT = currentSize;
NRF_SPIM0->TXD.LIST = 0;
PrepareTx(currentBufferAddr, currentSize);
currentBufferSize -= currentSize;
currentBufferAddr += currentSize;
NRF_SPIM0->RXD.PTR = (uint32_t) 0;
NRF_SPIM0->RXD.MAXCNT = 0;
NRF_SPIM0->RXD.LIST = 0;
NRF_SPIM0->EVENTS_END = 0;
NRF_SPIM0->TASKS_START = 1;
spiBaseAddress->TASKS_START = 1;
if(size == 1) {
while (NRF_SPIM0->EVENTS_END == 0);
while (spiBaseAddress->EVENTS_END == 0);
busy = false;
}
@ -184,8 +175,8 @@ bool SpiMaster::Write(const uint8_t *data, size_t size) {
}
void SpiMaster::Sleep() {
while(NRF_SPIM0->ENABLE != 0) {
NRF_SPIM0->ENABLE = (SPIM_ENABLE_ENABLE_Disabled << SPIM_ENABLE_ENABLE_Pos);
while(spiBaseAddress->ENABLE != 0) {
spiBaseAddress->ENABLE = (SPIM_ENABLE_ENABLE_Disabled << SPIM_ENABLE_ENABLE_Pos);
}
nrf_gpio_cfg_default(params.pinSCK);
nrf_gpio_cfg_default(params.pinMOSI);

4
src/drivers/SpiMaster.h
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@ -34,7 +34,9 @@ namespace Pinetime {
void Wakeup();
private:
void setup_workaround_for_ftpan_58(NRF_SPIM_Type *spim, uint32_t ppi_channel, uint32_t gpiote_channel);
void SetupWorkaroundForFtpan58(NRF_SPIM_Type *spim, uint32_t ppi_channel, uint32_t gpiote_channel);
void DisableWorkaroundForFtpan58(NRF_SPIM_Type *spim, uint32_t ppi_channel, uint32_t gpiote_channel);
void PrepareTx(const volatile uint32_t bufferAddress, const volatile size_t size);
NRF_SPIM_Type * spiBaseAddress;
uint8_t pinCsn;