2 * Copyright © 2011 Keith Packard <keithp@keithp.com>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; version 2 of the License.
8 * This program is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
13 * You should have received a copy of the GNU General Public License along
14 * with this program; if not, write to the Free Software Foundation, Inc.,
15 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
20 struct ao_task demo_task;
22 static inline int min(int a, int b) { return a < b ? a : b; }
27 char message[] = "Hello, Mike & Bdale --- ";
30 int len = sizeof(message) - 1;
35 ao_delay(AO_MS_TO_TICKS(150));
36 first = min(6, len - i);
38 memcpy(part, message + i, first);
39 memcpy(part + first, message, second);
40 ao_lcd_font_string(part);
56 static char src[20] = "hello, world";
60 ao_dma_set_transfer(STM_DMA_INDEX(1), dst, src, 13,
61 (1 << STM_DMA_CCR_MEM2MEM) |
62 (STM_DMA_CCR_PL_LOW << STM_DMA_CCR_PL) |
63 (STM_DMA_CCR_MSIZE_8 << STM_DMA_CCR_MSIZE) |
64 (STM_DMA_CCR_PSIZE_8 << STM_DMA_CCR_PSIZE) |
65 (1 << STM_DMA_CCR_MINC) |
66 (1 << STM_DMA_CCR_PINC) |
67 (0 << STM_DMA_CCR_CIRC) |
68 (STM_DMA_CCR_DIR_MEM_TO_PER << STM_DMA_CCR_DIR));
69 ao_dma_start(STM_DMA_INDEX(1));
71 while (!ao_dma_done[STM_DMA_INDEX(1)])
72 ao_sleep(&ao_dma_done[STM_DMA_INDEX(1)]);
74 printf ("copied %s\n", dst);
79 unsigned char data[] = { 0x55, 0xaa, 0xff, 0x00 };
82 for (i = 0; i < 10; i++) {
84 stm_gpio_set(&stm_gpioc, 12, 0);
85 ao_spi_send(data, 4, 0);
86 stm_gpio_set(&stm_gpioc, 12, 1);
96 unsigned char data[4];
99 for (i = 0; i < 10; i++) {
101 stm_gpio_set(&stm_gpioc, 12, 0);
102 ao_spi_recv(data, 4, 0);
103 stm_gpio_set(&stm_gpioc, 12, 1);
111 __code struct ao_cmds ao_demo_cmds[] = {
112 { ao_dma_test, "D\0DMA test" },
113 { ao_spi_write, "W\0SPI write" },
114 { ao_spi_read, "R\0SPI read" },
127 // ao_lcd_stm_init();
128 // ao_lcd_font_init();
131 ao_cmd_register(&ao_demo_cmds[0]);
133 stm_rcc.ahbenr |= (1 << STM_RCC_AHBENR_GPIOCEN);
134 stm_gpio_set(&stm_gpioc, 12, 1);
135 stm_moder_set(&stm_gpioc, 12, STM_MODER_OUTPUT);
136 stm_otyper_set(&stm_gpioc, 12, STM_OTYPER_PUSH_PULL);
138 ao_start_scheduler();