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Add beginEPD full implementation with safety concerns and a better init flow

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This commit is contained in:
brentru 2025-08-15 13:41:36 -04:00
parent c308694233
commit fc41a7de82
23 changed files with 148 additions and 64 deletions
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13
.vscode/settings.json vendored
View file

@ -1,7 +1,18 @@
{
"files.associations": {
"limits": "c",
"type_traits": "c"
"type_traits": "c",
"array": "cpp",
"deque": "cpp",
"list": "cpp",
"string": "cpp",
"unordered_map": "cpp",
"unordered_set": "cpp",
"vector": "cpp",
"string_view": "cpp",
"format": "cpp",
"initializer_list": "cpp",
"span": "cpp"
},
"C_Cpp.dimInactiveRegions": true,
"dotnet.defaultSolution": "disable",

98
src/components/display/hardware.cpp
View file

@ -53,14 +53,70 @@ wippersnapper_display_v1_DisplayType DisplayHardware::getType() {
Pointer to the SPI configuration structure for EPD.
@return True if configuration was successful, False otherwise.
*/
bool DisplayHardware::beginEPD(wippersnapper_display_v1_EPDConfig *config, wippersnapper_display_v1_EpdSpiConfig *spi_config) {
// Convert pins in config to int16_t instances
int16_t dc = -1, rst = -1, cs = -1, srcs = -1, busy = -1;
dc = (int16_t)atoi(spi_config->pin_dc+ 1);
rst = (int16_t)atoi(spi_config->pin_rst+ 1);
cs = (int16_t)atoi(spi_config->pin_cs+ 1);
srcs = (int16_t)atoi(spi_config->pin_sram_cs+ 1);
busy = (int16_t)atoi(spi_config->pin_busy+ 1);
bool DisplayHardware::beginEPD(
wippersnapper_display_v1_EPDConfig *config,
wippersnapper_display_v1_EpdSpiConfig *spi_config) {
// Validate pointers
if (config == nullptr || spi_config == nullptr) {
return false;
}
// Validate panel type
if (config->panel ==
wippersnapper_display_v1_EPDThinkInkPanel_EPD_THINK_INK_PANEL_UNSPECIFIED) {
return false; // Unsupported panel type
}
// Validate mode is a correct EPD mode
if (config->mode == wippersnapper_display_v1_EPDMode_EPD_MODE_UNSPECIFIED) {
return false; // Unsupported mode
}
// If we already have a display driver assigned to this hardware instance,
// clean it up!
if (_thinkink_driver ==
wippersnapper_display_v1_EPDThinkInkPanel_EPD_THINK_INK_PANEL_290_GRAYSCALE4_MFGN) {
delete _disp_thinkink_grayscale4_eaamfgn;
_disp_thinkink_grayscale4_eaamfgn = nullptr;
_thinkink_driver =
wippersnapper_display_v1_EPDThinkInkPanel_EPD_THINK_INK_PANEL_UNSPECIFIED;
} else if (
_thinkink_driver ==
wippersnapper_display_v1_EPDThinkInkPanel_EPD_THINK_INK_PANEL_290_GRAYSCALE4_T5) {
delete _disp_thinkink_grayscale4_t5;
_disp_thinkink_grayscale4_t5 = nullptr;
_thinkink_driver =
wippersnapper_display_v1_EPDThinkInkPanel_EPD_THINK_INK_PANEL_UNSPECIFIED;
}
// Parse all SPI bus pins
// Check length
if (strlen(spi_config->pin_dc) < 2 || strlen(spi_config->pin_rst) < 2 ||
strlen(spi_config->pin_cs) < 2) {
return false;
}
// SPI pins must start with 'D'
if (spi_config->pin_dc[0] != 'D' || spi_config->pin_rst[0] != 'D' ||
spi_config->pin_cs[0] != 'D') {
return false;
}
// Parse and assign pins
int16_t srcs = -1, busy = -1;
int16_t dc = (int16_t)atoi(spi_config->pin_dc + 1);
int16_t rst = (int16_t)atoi(spi_config->pin_rst + 1);
int16_t cs = (int16_t)atoi(spi_config->pin_cs + 1);
// Optionally parse SRAM CS and BUSY pins
if (strlen(spi_config->pin_sram_cs) >= 2 &&
spi_config->pin_sram_cs[0] == 'D') {
srcs = (int16_t)atoi(spi_config->pin_sram_cs + 1);
}
if (strlen(spi_config->pin_busy) >= 2 && spi_config->pin_busy[0] == 'D') {
busy = (int16_t)atoi(spi_config->pin_busy + 1);
}
// TODO: Configure SPI bus selection (UNUSED AS OF RIGHT NOW)
// Configure EPD mode
thinkinkmode_t epd_mode;
@ -68,17 +124,30 @@ bool DisplayHardware::beginEPD(wippersnapper_display_v1_EPDConfig *config, wippe
epd_mode = THINKINK_GRAYSCALE4;
} else if (config->mode == wippersnapper_display_v1_EPDMode_EPD_MODE_MONO) {
epd_mode = THINKINK_MONO;
} else {
epd_mode = THINKINK_MONO; // Default to mono
}
// Assign driver instance based on panel type
if (config->panel == wippersnapper_display_v1_EPDThinkInkPanel_EPD_THINK_INK_PANEL_213_GRAYSCALE4_MFGN) {
_disp_thinkink_grayscale4_eaamfgn = new ThinkInk_290_Grayscale4_EAAMFGN(dc, rst, cs, srcs, busy);
if (config->panel ==
wippersnapper_display_v1_EPDThinkInkPanel_EPD_THINK_INK_PANEL_290_GRAYSCALE4_MFGN) {
_disp_thinkink_grayscale4_eaamfgn =
new ThinkInk_290_Grayscale4_EAAMFGN(dc, rst, cs, srcs, busy);
if (!_disp_thinkink_grayscale4_eaamfgn)
return false; // Allocation failed
// Initialize the display
_disp_thinkink_grayscale4_eaamfgn->begin(epd_mode);
} else if (config->panel == wippersnapper_display_v1_EPDThinkInkPanel_EPD_THINK_INK_PANEL_213_GRAYSCALE4_T5) {
_disp_thinkink_grayscale4_t5 = new ThinkInk_290_Grayscale4_T5(dc, rst, cs, srcs, busy);
_thinkink_driver =
wippersnapper_display_v1_EPDThinkInkPanel_EPD_THINK_INK_PANEL_290_GRAYSCALE4_MFGN;
} else if (
config->panel ==
wippersnapper_display_v1_EPDThinkInkPanel_EPD_THINK_INK_PANEL_290_GRAYSCALE4_T5) {
_disp_thinkink_grayscale4_t5 =
new ThinkInk_290_Grayscale4_T5(dc, rst, cs, srcs, busy);
if (!_disp_thinkink_grayscale4_t5)
return false; // Allocation failed
// Initialize the display
_disp_thinkink_grayscale4_t5->begin(epd_mode);
_thinkink_driver =
wippersnapper_display_v1_EPDThinkInkPanel_EPD_THINK_INK_PANEL_290_GRAYSCALE4_T5;
} else {
return false; // Unsupported panel type
}
@ -104,4 +173,3 @@ bool DisplayHardware::begin(bool reset) {
void setTextSize(uint8_t sz) {
// Placeholder for setting text size on the display TODO
}

13
src/components/display/hardware.h
View file

@ -33,15 +33,20 @@ public:
// High-level API functions
void setType(wippersnapper_display_v1_DisplayType type);
wippersnapper_display_v1_DisplayType getType();
void beginEPD(wippersnapper_display_v1_EPDConfig *config, wippersnapper_display_v1_EpdSpiConfig *spi_config);
void beginEPD(wippersnapper_display_v1_EPDConfig *config,
wippersnapper_display_v1_EpdSpiConfig *spi_config);
bool begin(bool reset = true);
// API functions to abstract Adafruit_GFX
void setTextSize(uint8_t sz);
private:
private:
wippersnapper_display_v1_DisplayType _type; ///< Display type
wippersnapper_display_v1_EPDThinkInkPanel
_thinkink_driver; ///< ThinkInk driver type
// TODO: Make these drivers instead?
ThinkInk_290_Grayscale4_EAAMFGN *_disp_thinkink_grayscale4_eaamfgn = nullptr; //< 2025 MagTag with SSD1680Z chipset
ThinkInk_290_Grayscale4_T5 *_disp_thinkink_grayscale4_t5 = nullptr; ///< Pre-2025 MagTag with IL0373 chipset
ThinkInk_290_Grayscale4_EAAMFGN *_disp_thinkink_grayscale4_eaamfgn =
nullptr; //< 2025 MagTag with SSD1680Z chipset
ThinkInk_290_Grayscale4_T5 *_disp_thinkink_grayscale4_t5 =
nullptr; ///< Pre-2025 MagTag with IL0373 chipset
};
#endif // WS_DISPLAY_HARDWARE_H

2
src/wippersnapper/description/v1/description.pb.c
View file

@ -1,5 +1,5 @@
/* Automatically generated nanopb constant definitions */
/* Generated by nanopb-0.4.5-dev at Fri Aug 15 16:18:27 2025. */
/* Generated by nanopb-0.4.5-dev at Fri Aug 15 17:34:50 2025. */
#include "wippersnapper/description/v1/description.pb.h"
#if PB_PROTO_HEADER_VERSION != 40

2
src/wippersnapper/description/v1/description.pb.h
View file

@ -1,5 +1,5 @@
/* Automatically generated nanopb header */
/* Generated by nanopb-0.4.5-dev at Fri Aug 15 16:18:27 2025. */
/* Generated by nanopb-0.4.5-dev at Fri Aug 15 17:34:50 2025. */
#ifndef PB_WIPPERSNAPPER_DESCRIPTION_V1_WIPPERSNAPPER_DESCRIPTION_V1_DESCRIPTION_PB_H_INCLUDED
#define PB_WIPPERSNAPPER_DESCRIPTION_V1_WIPPERSNAPPER_DESCRIPTION_V1_DESCRIPTION_PB_H_INCLUDED

2
src/wippersnapper/display/v1/display.pb.c
View file

@ -1,5 +1,5 @@
/* Automatically generated nanopb constant definitions */
/* Generated by nanopb-0.4.5-dev at Fri Aug 15 16:18:27 2025. */
/* Generated by nanopb-0.4.5-dev at Fri Aug 15 17:34:50 2025. */
#include "wippersnapper/display/v1/display.pb.h"
#if PB_PROTO_HEADER_VERSION != 40

10
src/wippersnapper/display/v1/display.pb.h
View file

@ -1,5 +1,5 @@
/* Automatically generated nanopb header */
/* Generated by nanopb-0.4.5-dev at Fri Aug 15 16:18:27 2025. */
/* Generated by nanopb-0.4.5-dev at Fri Aug 15 17:34:50 2025. */
#ifndef PB_WIPPERSNAPPER_DISPLAY_V1_WIPPERSNAPPER_DISPLAY_V1_DISPLAY_PB_H_INCLUDED
#define PB_WIPPERSNAPPER_DISPLAY_V1_WIPPERSNAPPER_DISPLAY_V1_DISPLAY_PB_H_INCLUDED
@ -37,8 +37,8 @@ typedef enum _wippersnapper_display_v1_EPDColors {
typedef enum _wippersnapper_display_v1_EPDThinkInkPanel {
wippersnapper_display_v1_EPDThinkInkPanel_EPD_THINK_INK_PANEL_UNSPECIFIED = 0,
wippersnapper_display_v1_EPDThinkInkPanel_EPD_THINK_INK_PANEL_213_GRAYSCALE4_MFGN = 1,
wippersnapper_display_v1_EPDThinkInkPanel_EPD_THINK_INK_PANEL_213_GRAYSCALE4_T5 = 2
wippersnapper_display_v1_EPDThinkInkPanel_EPD_THINK_INK_PANEL_290_GRAYSCALE4_MFGN = 1,
wippersnapper_display_v1_EPDThinkInkPanel_EPD_THINK_INK_PANEL_290_GRAYSCALE4_T5 = 2
} wippersnapper_display_v1_EPDThinkInkPanel;
/* Struct definitions */
@ -112,8 +112,8 @@ typedef struct _wippersnapper_display_v1_DisplayWrite {
#define _wippersnapper_display_v1_EPDColors_ARRAYSIZE ((wippersnapper_display_v1_EPDColors)(wippersnapper_display_v1_EPDColors_EPD_COLORS_YELLOW+1))
#define _wippersnapper_display_v1_EPDThinkInkPanel_MIN wippersnapper_display_v1_EPDThinkInkPanel_EPD_THINK_INK_PANEL_UNSPECIFIED
#define _wippersnapper_display_v1_EPDThinkInkPanel_MAX wippersnapper_display_v1_EPDThinkInkPanel_EPD_THINK_INK_PANEL_213_GRAYSCALE4_T5
#define _wippersnapper_display_v1_EPDThinkInkPanel_ARRAYSIZE ((wippersnapper_display_v1_EPDThinkInkPanel)(wippersnapper_display_v1_EPDThinkInkPanel_EPD_THINK_INK_PANEL_213_GRAYSCALE4_T5+1))
#define _wippersnapper_display_v1_EPDThinkInkPanel_MAX wippersnapper_display_v1_EPDThinkInkPanel_EPD_THINK_INK_PANEL_290_GRAYSCALE4_T5
#define _wippersnapper_display_v1_EPDThinkInkPanel_ARRAYSIZE ((wippersnapper_display_v1_EPDThinkInkPanel)(wippersnapper_display_v1_EPDThinkInkPanel_EPD_THINK_INK_PANEL_290_GRAYSCALE4_T5+1))
#ifdef __cplusplus

2
src/wippersnapper/ds18x20/v1/ds18x20.pb.c
View file

@ -1,5 +1,5 @@
/* Automatically generated nanopb constant definitions */
/* Generated by nanopb-0.4.5-dev at Fri Aug 15 16:18:27 2025. */
/* Generated by nanopb-0.4.5-dev at Fri Aug 15 17:34:50 2025. */
#include "wippersnapper/ds18x20/v1/ds18x20.pb.h"
#if PB_PROTO_HEADER_VERSION != 40

2
src/wippersnapper/ds18x20/v1/ds18x20.pb.h
View file

@ -1,5 +1,5 @@
/* Automatically generated nanopb header */
/* Generated by nanopb-0.4.5-dev at Fri Aug 15 16:18:27 2025. */
/* Generated by nanopb-0.4.5-dev at Fri Aug 15 17:34:50 2025. */
#ifndef PB_WIPPERSNAPPER_DS18X20_V1_WIPPERSNAPPER_DS18X20_V1_DS18X20_PB_H_INCLUDED
#define PB_WIPPERSNAPPER_DS18X20_V1_WIPPERSNAPPER_DS18X20_V1_DS18X20_PB_H_INCLUDED

2
src/wippersnapper/i2c/v1/i2c.pb.c
View file

@ -1,5 +1,5 @@
/* Automatically generated nanopb constant definitions */
/* Generated by nanopb-0.4.5-dev at Fri Aug 15 16:18:27 2025. */
/* Generated by nanopb-0.4.5-dev at Fri Aug 15 17:34:50 2025. */
#include "wippersnapper/i2c/v1/i2c.pb.h"
#if PB_PROTO_HEADER_VERSION != 40

2
src/wippersnapper/i2c/v1/i2c.pb.h
View file

@ -1,5 +1,5 @@
/* Automatically generated nanopb header */
/* Generated by nanopb-0.4.5-dev at Fri Aug 15 16:18:27 2025. */
/* Generated by nanopb-0.4.5-dev at Fri Aug 15 17:34:50 2025. */
#ifndef PB_WIPPERSNAPPER_I2C_V1_WIPPERSNAPPER_I2C_V1_I2C_PB_H_INCLUDED
#define PB_WIPPERSNAPPER_I2C_V1_WIPPERSNAPPER_I2C_V1_I2C_PB_H_INCLUDED

2
src/wippersnapper/pin/v1/pin.pb.c
View file

@ -1,5 +1,5 @@
/* Automatically generated nanopb constant definitions */
/* Generated by nanopb-0.4.5-dev at Fri Aug 15 16:18:27 2025. */
/* Generated by nanopb-0.4.5-dev at Fri Aug 15 17:34:50 2025. */
#include "wippersnapper/pin/v1/pin.pb.h"
#if PB_PROTO_HEADER_VERSION != 40

2
src/wippersnapper/pin/v1/pin.pb.h
View file

@ -1,5 +1,5 @@
/* Automatically generated nanopb header */
/* Generated by nanopb-0.4.5-dev at Fri Aug 15 16:18:27 2025. */
/* Generated by nanopb-0.4.5-dev at Fri Aug 15 17:34:50 2025. */
#ifndef PB_WIPPERSNAPPER_PIN_V1_WIPPERSNAPPER_PIN_V1_PIN_PB_H_INCLUDED
#define PB_WIPPERSNAPPER_PIN_V1_WIPPERSNAPPER_PIN_V1_PIN_PB_H_INCLUDED

2
src/wippersnapper/pixels/v1/pixels.pb.c
View file

@ -1,5 +1,5 @@
/* Automatically generated nanopb constant definitions */
/* Generated by nanopb-0.4.5-dev at Fri Aug 15 16:18:27 2025. */
/* Generated by nanopb-0.4.5-dev at Fri Aug 15 17:34:50 2025. */
#include "wippersnapper/pixels/v1/pixels.pb.h"
#if PB_PROTO_HEADER_VERSION != 40

2
src/wippersnapper/pixels/v1/pixels.pb.h
View file

@ -1,5 +1,5 @@
/* Automatically generated nanopb header */
/* Generated by nanopb-0.4.5-dev at Fri Aug 15 16:18:27 2025. */
/* Generated by nanopb-0.4.5-dev at Fri Aug 15 17:34:50 2025. */
#ifndef PB_WIPPERSNAPPER_PIXELS_V1_WIPPERSNAPPER_PIXELS_V1_PIXELS_PB_H_INCLUDED
#define PB_WIPPERSNAPPER_PIXELS_V1_WIPPERSNAPPER_PIXELS_V1_PIXELS_PB_H_INCLUDED

2
src/wippersnapper/pwm/v1/pwm.pb.c
View file

@ -1,5 +1,5 @@
/* Automatically generated nanopb constant definitions */
/* Generated by nanopb-0.4.5-dev at Fri Aug 15 16:18:27 2025. */
/* Generated by nanopb-0.4.5-dev at Fri Aug 15 17:34:50 2025. */
#include "wippersnapper/pwm/v1/pwm.pb.h"
#if PB_PROTO_HEADER_VERSION != 40

2
src/wippersnapper/pwm/v1/pwm.pb.h
View file

@ -1,5 +1,5 @@
/* Automatically generated nanopb header */
/* Generated by nanopb-0.4.5-dev at Fri Aug 15 16:18:27 2025. */
/* Generated by nanopb-0.4.5-dev at Fri Aug 15 17:34:50 2025. */
#ifndef PB_WIPPERSNAPPER_PWM_V1_WIPPERSNAPPER_PWM_V1_PWM_PB_H_INCLUDED
#define PB_WIPPERSNAPPER_PWM_V1_WIPPERSNAPPER_PWM_V1_PWM_PB_H_INCLUDED

2
src/wippersnapper/servo/v1/servo.pb.c
View file

@ -1,5 +1,5 @@
/* Automatically generated nanopb constant definitions */
/* Generated by nanopb-0.4.5-dev at Fri Aug 15 16:18:27 2025. */
/* Generated by nanopb-0.4.5-dev at Fri Aug 15 17:34:50 2025. */
#include "wippersnapper/servo/v1/servo.pb.h"
#if PB_PROTO_HEADER_VERSION != 40

2
src/wippersnapper/servo/v1/servo.pb.h
View file

@ -1,5 +1,5 @@
/* Automatically generated nanopb header */
/* Generated by nanopb-0.4.5-dev at Fri Aug 15 16:18:27 2025. */
/* Generated by nanopb-0.4.5-dev at Fri Aug 15 17:34:50 2025. */
#ifndef PB_WIPPERSNAPPER_SERVO_V1_WIPPERSNAPPER_SERVO_V1_SERVO_PB_H_INCLUDED
#define PB_WIPPERSNAPPER_SERVO_V1_WIPPERSNAPPER_SERVO_V1_SERVO_PB_H_INCLUDED

2
src/wippersnapper/signal/v1/signal.pb.c
View file

@ -1,5 +1,5 @@
/* Automatically generated nanopb constant definitions */
/* Generated by nanopb-0.4.5-dev at Fri Aug 15 16:18:27 2025. */
/* Generated by nanopb-0.4.5-dev at Fri Aug 15 17:34:50 2025. */
#include "wippersnapper/signal/v1/signal.pb.h"
#if PB_PROTO_HEADER_VERSION != 40

2
src/wippersnapper/signal/v1/signal.pb.h
View file

@ -1,5 +1,5 @@
/* Automatically generated nanopb header */
/* Generated by nanopb-0.4.5-dev at Fri Aug 15 16:18:27 2025. */
/* Generated by nanopb-0.4.5-dev at Fri Aug 15 17:34:50 2025. */
#ifndef PB_WIPPERSNAPPER_SIGNAL_V1_WIPPERSNAPPER_SIGNAL_V1_SIGNAL_PB_H_INCLUDED
#define PB_WIPPERSNAPPER_SIGNAL_V1_WIPPERSNAPPER_SIGNAL_V1_SIGNAL_PB_H_INCLUDED

2
src/wippersnapper/uart/v1/uart.pb.c
View file

@ -1,5 +1,5 @@
/* Automatically generated nanopb constant definitions */
/* Generated by nanopb-0.4.5-dev at Fri Aug 15 16:18:27 2025. */
/* Generated by nanopb-0.4.5-dev at Fri Aug 15 17:34:50 2025. */
#include "wippersnapper/uart/v1/uart.pb.h"
#if PB_PROTO_HEADER_VERSION != 40

2
src/wippersnapper/uart/v1/uart.pb.h
View file

@ -1,5 +1,5 @@
/* Automatically generated nanopb header */
/* Generated by nanopb-0.4.5-dev at Fri Aug 15 16:18:27 2025. */
/* Generated by nanopb-0.4.5-dev at Fri Aug 15 17:34:50 2025. */
#ifndef PB_WIPPERSNAPPER_UART_V1_WIPPERSNAPPER_UART_V1_UART_PB_H_INCLUDED
#define PB_WIPPERSNAPPER_UART_V1_WIPPERSNAPPER_UART_V1_UART_PB_H_INCLUDED