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   1 /*
   2  * Copyright © 2012 Keith Packard <keithp@keithp.com>
   3  *
   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.
   7  *
   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.
  12  *
  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.
  16  */
  17
  18 #ifndef _AO_ARCH_FUNCS_H_
  19 #define _AO_ARCH_FUNCS_H_
  20
  21 /* ao_spi_stm.c
  22  */
  23 extern uint8_t  ao_spi_mutex[STM_NUM_SPI];
  24
  25 #define AO_SPI_SPEED_FAST       STM_SPI_CR1_BR_PCLK_4
  26 #define AO_SPI_SPEED_1MHz       STM_SPI_CR1_BR_PCLK_16
  27 #define AO_SPI_SPEED_200kHz     STM_SPI_CR1_BR_PCLK_256
  28
  29 void
  30 ao_spi_get(uint8_t spi_index, uint32_t speed);
  31
  32 void
  33 ao_spi_put(uint8_t spi_index);
  34
  35 void
  36 ao_spi_send(void *block, uint16_t len, uint8_t spi_index);
  37
  38 void
  39 ao_spi_send_fixed(uint8_t value, uint16_t len, uint8_t spi_index);
  40
  41 void
  42 ao_spi_recv(void *block, uint16_t len, uint8_t spi_index);
  43
  44 void
  45 ao_spi_duplex(void *out, void *in, uint16_t len, uint8_t spi_index);
  46
  47 extern uint16_t ao_spi_speed[STM_NUM_SPI];
  48
  49 void
  50 ao_spi_init(void);
  51
  52 #define ao_spi_get_mask(reg,mask,bus, speed) do {               \
  53                 ao_spi_get(bus, speed);                         \
  54                 (reg)->bsrr = ((uint32_t) mask) << 16;  \
  55         } while (0)
  56
  57 #define ao_spi_put_mask(reg,mask,bus) do {      \
  58                 (reg)->bsrr = mask;             \
  59                 ao_spi_put(bus);                \
  60         } while (0)
  61
  62 #define ao_spi_get_bit(reg,bit,pin,bus,speed) ao_spi_get_mask(reg,(1<<bit),bus,speed)
  63 #define ao_spi_put_bit(reg,bit,pin,bus) ao_spi_put_mask(reg,(1<<bit),bus)
  64
  65 #define ao_enable_port(port) do {                                       \
  66                 if ((port) == &stm_gpioa)                               \
  67                         stm_rcc.ahbenr |= (1 << STM_RCC_AHBENR_GPIOAEN); \
  68                 else if ((port) == &stm_gpiob)                          \
  69                         stm_rcc.ahbenr |= (1 << STM_RCC_AHBENR_GPIOBEN); \
  70                 else if ((port) == &stm_gpioc)                          \
  71                         stm_rcc.ahbenr |= (1 << STM_RCC_AHBENR_GPIOCEN); \
  72                 else if ((port) == &stm_gpiod)                          \
  73                         stm_rcc.ahbenr |= (1 << STM_RCC_AHBENR_GPIODEN); \
  74                 else if ((port) == &stm_gpioe)                          \
  75                         stm_rcc.ahbenr |= (1 << STM_RCC_AHBENR_GPIOEEN); \
  76         } while (0)
  77
  78
  79 #define ao_gpio_set(port, bit, pin, v) stm_gpio_set(port, bit, v)
  80
  81 #define ao_gpio_get(port, bit, pin) stm_gpio_get(port, bit)
  82
  83 #define ao_enable_output(port,bit,pin,v) do {                   \
  84                 ao_enable_port(port);                           \
  85                 ao_gpio_set(port, bit, pin, v);                 \
  86                 stm_moder_set(port, bit, STM_MODER_OUTPUT);\
  87         } while (0)
  88
  89 #define ao_enable_input(port,bit,mode) do {                             \
  90                 ao_enable_port(port);                                   \
  91                 stm_moder_set(port, bit, STM_MODER_INPUT);              \
  92                 if (mode == AO_EXTI_MODE_PULL_UP)                       \
  93                         stm_pupdr_set(port, bit, STM_PUPDR_PULL_UP);    \
  94                 else if (mode == AO_EXTI_MODE_PULL_DOWN)                \
  95                         stm_pupdr_set(port, bit, STM_PUPDR_PULL_DOWN);  \
  96                 else                                                    \
  97                         stm_pupdr_set(port, bit, STM_PUPDR_NONE);       \
  98         } while (0)
  99
 100 #define ao_enable_cs(port,bit) do {                             \
 101                 stm_gpio_set((port), bit, 1);                   \
 102                 stm_moder_set((port), bit, STM_MODER_OUTPUT);   \
 103         } while (0)
 104
 105 #define ao_spi_init_cs(port, mask) do {                         \
 106                 ao_enable_port(port);                           \
 107                 if ((mask) & 0x0001) ao_enable_cs(port, 0);     \
 108                 if ((mask) & 0x0002) ao_enable_cs(port, 1);     \
 109                 if ((mask) & 0x0004) ao_enable_cs(port, 2);     \
 110                 if ((mask) & 0x0008) ao_enable_cs(port, 3);     \
 111                 if ((mask) & 0x0010) ao_enable_cs(port, 4);     \
 112                 if ((mask) & 0x0020) ao_enable_cs(port, 5);     \
 113                 if ((mask) & 0x0040) ao_enable_cs(port, 6);     \
 114                 if ((mask) & 0x0080) ao_enable_cs(port, 7);     \
 115                 if ((mask) & 0x0100) ao_enable_cs(port, 8);     \
 116                 if ((mask) & 0x0200) ao_enable_cs(port, 9);     \
 117                 if ((mask) & 0x0400) ao_enable_cs(port, 10);\
 118                 if ((mask) & 0x0800) ao_enable_cs(port, 11);\
 119                 if ((mask) & 0x1000) ao_enable_cs(port, 12);\
 120                 if ((mask) & 0x2000) ao_enable_cs(port, 13);\
 121                 if ((mask) & 0x4000) ao_enable_cs(port, 14);\
 122                 if ((mask) & 0x8000) ao_enable_cs(port, 15);\
 123         } while (0)
 124
 125 /* ao_dma_stm.c
 126  */
 127
 128 extern uint8_t ao_dma_done[STM_NUM_DMA];
 129
 130 void
 131 ao_dma_set_transfer(uint8_t             index,
 132                     volatile void       *peripheral,
 133                     void                *memory,
 134                     uint16_t            count,
 135                     uint32_t            ccr);
 136
 137 void
 138 ao_dma_set_isr(uint8_t index, void (*isr)(int index));
 139
 140 void
 141 ao_dma_start(uint8_t index);
 142
 143 void
 144 ao_dma_done_transfer(uint8_t index);
 145
 146 void
 147 ao_dma_abort(uint8_t index);
 148
 149 void
 150 ao_dma_alloc(uint8_t index);
 151
 152 void
 153 ao_dma_init(void);
 154
 155 /* ao_i2c_stm.c */
 156
 157 void
 158 ao_i2c_get(uint8_t i2c_index);
 159
 160 uint8_t
 161 ao_i2c_start(uint8_t i2c_index, uint16_t address);
 162
 163 void
 164 ao_i2c_put(uint8_t i2c_index);
 165
 166 uint8_t
 167 ao_i2c_send(void *block, uint16_t len, uint8_t i2c_index, uint8_t stop);
 168
 169 uint8_t
 170 ao_i2c_recv(void *block, uint16_t len, uint8_t i2c_index, uint8_t stop);
 171
 172 void
 173 ao_i2c_init(void);
 174
 175 #endif /* _AO_ARCH_FUNCS_H_ */