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130 lines
3.1 KiB
130 lines
3.1 KiB
#include "dotmatrix.h"
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#include "malloc_safe.h"
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#include "com/debug.h"
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DotMatrix_Cfg *dmtx;
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DotMatrix_Cfg* dmtx_init(DotMatrix_Init *init)
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{
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DotMatrix_Cfg *disp = calloc_s(1, sizeof(DotMatrix_Cfg));
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disp->drv.SPIx = init->SPIx;
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disp->drv.CS_GPIOx = init->CS_GPIOx;
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disp->drv.CS_PINx = init->CS_PINx;
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disp->drv.chain_len = init->cols * init->rows;
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disp->cols = init->cols;
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disp->rows = init->rows;
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disp->screen = calloc_s(init->cols * init->rows * 8, 1); // 8 bytes per driver
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max2719_cmd_all(&disp->drv, MAX2719_CMD_DECODE_MODE, 0x00); // no decode
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max2719_cmd_all(&disp->drv, MAX2719_CMD_SCAN_LIMIT, 0x07); // scan all 8
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max2719_cmd_all(&disp->drv, MAX2719_CMD_SHUTDOWN, 0x01); // not shutdown
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max2719_cmd_all(&disp->drv, MAX2719_CMD_DISPLAY_TEST, 0x00); // not test
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max2719_cmd_all(&disp->drv, MAX2719_CMD_INTENSITY, 0x07); // half intensity
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// clear
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for (uint8_t i = 0; i < 8; i++) {
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max2719_cmd_all(&disp->drv, MAX2719_CMD_DIGIT0+i, 0);
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}
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return disp;
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}
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void dmtx_show(DotMatrix_Cfg* disp)
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{
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for (uint8_t i = 0; i < 8; i++) {
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// show each digit's array in turn
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max2719_cmd_all_data(&disp->drv, MAX2719_CMD_DIGIT0+i, disp->screen + (i * disp->drv.chain_len));
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}
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}
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void dmtx_clear(DotMatrix_Cfg* disp)
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{
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memset(disp->screen, 0, disp->drv.chain_len*8);
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}
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void dmtx_intensity(DotMatrix_Cfg* disp, uint8_t intensity)
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{
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max2719_cmd_all(&disp->drv, MAX2719_CMD_INTENSITY, intensity & 0x0F);
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}
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void dmtx_blank(DotMatrix_Cfg* disp, bool blank)
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{
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max2719_cmd_all(&disp->drv, MAX2719_CMD_SHUTDOWN, (!blank) & 0x01);
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}
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/**
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* @brief Get a cell pointer
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* @param disp : driver inst
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* @param x : x coord
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* @param y : y coord
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* @param xd : pointer to store the offset in the cell
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* @return cell ptr
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*/
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static uint8_t* cell_ptr(DotMatrix_Cfg* disp, int32_t x, int32_t y, uint8_t *xd)
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{
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if (x < 0 || y < 0) return NULL;
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if ((uint32_t)x >= disp->cols*8 || (uint32_t)y >= disp->rows*8) return NULL;
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uint32_t cell_x = (uint32_t)x >> 3;
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*xd = x & 7;
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// resolve cell
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uint32_t digit = y & 7;
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cell_x += ((uint32_t)y >> 3) * disp->cols;
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uint32_t cell_idx = (digit * disp->drv.chain_len) + cell_x;
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return &disp->screen[cell_idx];
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}
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bool dmtx_get(DotMatrix_Cfg* disp, int32_t x, int32_t y)
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{
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uint8_t xd;
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uint8_t *cell = cell_ptr(disp, x, y, &xd);
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if (cell == NULL) return 0;
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return (*cell >> xd) & 1;
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}
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void dmtx_toggle(DotMatrix_Cfg* disp, int32_t x, int32_t y)
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{
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uint8_t xd;
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uint8_t *cell = cell_ptr(disp, x, y, &xd);
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if (cell == NULL) return;
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*cell ^= 1 << xd;
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}
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void dmtx_set(DotMatrix_Cfg* disp, int32_t x, int32_t y, bool bit)
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{
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uint8_t xd;
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uint8_t *cell = cell_ptr(disp, x, y, &xd);
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if (cell == NULL) return;
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if (bit) {
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*cell |= 1 << xd;
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} else {
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*cell &= ~(1 << xd);
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}
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}
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void dmtx_set_block(DotMatrix_Cfg* disp, int32_t startX, int32_t startY, uint32_t *data_rows, uint32_t width, uint16_t height)
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{
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for (uint32_t y = 0; y < height; y++) {
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uint32_t row = data_rows[y];
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for (uint32_t x = 0; x < width; x++) {
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int xx = startX + (int)x;
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int yy = startY + (int)y;
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bool val = (row >> (width - x - 1)) & 1;
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dmtx_set(disp, xx, yy, val);
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}
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}
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}
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