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| 1 | +#include <stdint.h> |
| 2 | +#include <stddef.h> |
| 3 | +#include "board.h" |
| 4 | +#include <wolfHAL/platform/st/stm32f091xx.h> |
| 5 | +#include "peripheral.h" |
| 6 | + |
| 7 | +volatile uint32_t g_tick = 0; |
| 8 | +volatile uint8_t g_waiting = 0; |
| 9 | +volatile uint8_t g_tickOverflow = 0; |
| 10 | + |
| 11 | +void SysTick_Handler() |
| 12 | +{ |
| 13 | + uint32_t tickBefore = g_tick++; |
| 14 | + if (g_waiting) { |
| 15 | + if (tickBefore > g_tick) |
| 16 | + g_tickOverflow = 1; |
| 17 | + } |
| 18 | +} |
| 19 | + |
| 20 | +uint32_t Board_GetTick(void) |
| 21 | +{ |
| 22 | + return g_tick; |
| 23 | +} |
| 24 | + |
| 25 | +whal_Timeout g_whalTimeout = { |
| 26 | + .timeoutTicks = 1000, |
| 27 | + .GetTick = Board_GetTick, |
| 28 | +}; |
| 29 | + |
| 30 | +/* Clock — PLL at 48 MHz (HSI/2 * 12) */ |
| 31 | +whal_Clock g_whalClock = { |
| 32 | + .regmap = { WHAL_STM32F091_RCC_REGMAP }, |
| 33 | + |
| 34 | + .cfg = &(whal_Stm32f0Rcc_Cfg) { |
| 35 | + .sysClkSrc = WHAL_STM32F0_RCC_SYSCLK_SRC_PLL, |
| 36 | + .pllCfg = &(whal_Stm32f0Rcc_PllCfg) { |
| 37 | + .clkSrc = WHAL_STM32F0_RCC_PLLSRC_HSI_DIV2, |
| 38 | + .prediv = 1, |
| 39 | + .pllmul = 12, |
| 40 | + }, |
| 41 | + }, |
| 42 | +}; |
| 43 | + |
| 44 | +static const whal_Stm32f0Rcc_Clk g_clocks[] = { |
| 45 | + {WHAL_STM32F091_GPIOA_CLOCK}, |
| 46 | + {WHAL_STM32F091_GPIOB_CLOCK}, |
| 47 | + {WHAL_STM32F091_GPIOC_CLOCK}, |
| 48 | + {WHAL_STM32F091_USART2_CLOCK}, |
| 49 | + {WHAL_STM32F091_SPI1_CLOCK}, |
| 50 | + {WHAL_STM32F091_I2C1_CLOCK}, |
| 51 | +}; |
| 52 | +#define CLOCK_COUNT (sizeof(g_clocks) / sizeof(g_clocks[0])) |
| 53 | + |
| 54 | +/* GPIO */ |
| 55 | +whal_Gpio g_whalGpio = { |
| 56 | + .regmap = { WHAL_STM32F091_GPIO_REGMAP }, |
| 57 | + |
| 58 | + .cfg = &(whal_Stm32f0Gpio_Cfg) { |
| 59 | + .pinCfg = (whal_Stm32f0Gpio_PinCfg[PIN_COUNT]) { |
| 60 | + /* LD2 Green LED on PA5 */ |
| 61 | + [LED_PIN] = WHAL_STM32F0_GPIO_PIN( |
| 62 | + WHAL_STM32F0_GPIO_PORT_A, 5, WHAL_STM32F0_GPIO_MODE_OUT, |
| 63 | + WHAL_STM32F0_GPIO_OUTTYPE_PUSHPULL, WHAL_STM32F0_GPIO_SPEED_LOW, |
| 64 | + WHAL_STM32F0_GPIO_PULL_NONE, 0), |
| 65 | + /* USART2 TX on PA2, AF1 */ |
| 66 | + [UART_TX_PIN] = WHAL_STM32F0_GPIO_PIN( |
| 67 | + WHAL_STM32F0_GPIO_PORT_A, 2, WHAL_STM32F0_GPIO_MODE_ALTFN, |
| 68 | + WHAL_STM32F0_GPIO_OUTTYPE_PUSHPULL, WHAL_STM32F0_GPIO_SPEED_FAST, |
| 69 | + WHAL_STM32F0_GPIO_PULL_UP, 1), |
| 70 | + /* USART2 RX on PA3, AF1 */ |
| 71 | + [UART_RX_PIN] = WHAL_STM32F0_GPIO_PIN( |
| 72 | + WHAL_STM32F0_GPIO_PORT_A, 3, WHAL_STM32F0_GPIO_MODE_ALTFN, |
| 73 | + WHAL_STM32F0_GPIO_OUTTYPE_PUSHPULL, WHAL_STM32F0_GPIO_SPEED_FAST, |
| 74 | + WHAL_STM32F0_GPIO_PULL_UP, 1), |
| 75 | + /* SPI1 SCK on PB3, AF0 */ |
| 76 | + [SPI_SCK_PIN] = WHAL_STM32F0_GPIO_PIN( |
| 77 | + WHAL_STM32F0_GPIO_PORT_B, 3, WHAL_STM32F0_GPIO_MODE_ALTFN, |
| 78 | + WHAL_STM32F0_GPIO_OUTTYPE_PUSHPULL, WHAL_STM32F0_GPIO_SPEED_FAST, |
| 79 | + WHAL_STM32F0_GPIO_PULL_NONE, 0), |
| 80 | + /* SPI1 MISO on PB4, AF0 */ |
| 81 | + [SPI_MISO_PIN] = WHAL_STM32F0_GPIO_PIN( |
| 82 | + WHAL_STM32F0_GPIO_PORT_B, 4, WHAL_STM32F0_GPIO_MODE_ALTFN, |
| 83 | + WHAL_STM32F0_GPIO_OUTTYPE_PUSHPULL, WHAL_STM32F0_GPIO_SPEED_FAST, |
| 84 | + WHAL_STM32F0_GPIO_PULL_NONE, 0), |
| 85 | + /* SPI1 MOSI on PB5, AF0 */ |
| 86 | + [SPI_MOSI_PIN] = WHAL_STM32F0_GPIO_PIN( |
| 87 | + WHAL_STM32F0_GPIO_PORT_B, 5, WHAL_STM32F0_GPIO_MODE_ALTFN, |
| 88 | + WHAL_STM32F0_GPIO_OUTTYPE_PUSHPULL, WHAL_STM32F0_GPIO_SPEED_FAST, |
| 89 | + WHAL_STM32F0_GPIO_PULL_NONE, 0), |
| 90 | + /* SPI CS on PB6, output, push-pull */ |
| 91 | + [SPI_CS_PIN] = WHAL_STM32F0_GPIO_PIN( |
| 92 | + WHAL_STM32F0_GPIO_PORT_B, 6, WHAL_STM32F0_GPIO_MODE_OUT, |
| 93 | + WHAL_STM32F0_GPIO_OUTTYPE_PUSHPULL, WHAL_STM32F0_GPIO_SPEED_FAST, |
| 94 | + WHAL_STM32F0_GPIO_PULL_UP, 0), |
| 95 | + /* I2C1 SCL on PB8, AF1, open-drain */ |
| 96 | + [I2C_SCL_PIN] = WHAL_STM32F0_GPIO_PIN( |
| 97 | + WHAL_STM32F0_GPIO_PORT_B, 8, WHAL_STM32F0_GPIO_MODE_ALTFN, |
| 98 | + WHAL_STM32F0_GPIO_OUTTYPE_OPENDRAIN, WHAL_STM32F0_GPIO_SPEED_FAST, |
| 99 | + WHAL_STM32F0_GPIO_PULL_UP, 1), |
| 100 | + /* I2C1 SDA on PB9, AF1, open-drain */ |
| 101 | + [I2C_SDA_PIN] = WHAL_STM32F0_GPIO_PIN( |
| 102 | + WHAL_STM32F0_GPIO_PORT_B, 9, WHAL_STM32F0_GPIO_MODE_ALTFN, |
| 103 | + WHAL_STM32F0_GPIO_OUTTYPE_OPENDRAIN, WHAL_STM32F0_GPIO_SPEED_FAST, |
| 104 | + WHAL_STM32F0_GPIO_PULL_UP, 1), |
| 105 | + }, |
| 106 | + .pinCount = PIN_COUNT, |
| 107 | + }, |
| 108 | +}; |
| 109 | + |
| 110 | +/* Timer — SysTick at 1 ms */ |
| 111 | +whal_Timer g_whalTimer = { |
| 112 | + .regmap = { WHAL_CORTEX_M0_SYSTICK_REGMAP }, |
| 113 | + .driver = WHAL_CORTEX_M0_SYSTICK_DRIVER, |
| 114 | + |
| 115 | + .cfg = &(whal_SysTick_Cfg) { |
| 116 | + .cyclesPerTick = 48000000 / 1000, |
| 117 | + .clkSrc = WHAL_SYSTICK_CLKSRC_SYSCLK, |
| 118 | + .tickInt = WHAL_SYSTICK_TICKINT_ENABLED, |
| 119 | + }, |
| 120 | +}; |
| 121 | + |
| 122 | +/* UART — USART2 at 115200 baud */ |
| 123 | +whal_Uart g_whalUart = { |
| 124 | + .regmap = { WHAL_STM32F091_USART2_REGMAP }, |
| 125 | + |
| 126 | + .cfg = &(whal_Stm32f0Uart_Cfg) { |
| 127 | + .timeout = &g_whalTimeout, |
| 128 | + .brr = WHAL_STM32F0_UART_BRR(48000000, 115200), |
| 129 | + }, |
| 130 | +}; |
| 131 | + |
| 132 | +/* SPI */ |
| 133 | +whal_Spi g_whalSpi = { |
| 134 | + .regmap = { WHAL_STM32F091_SPI1_REGMAP }, |
| 135 | + |
| 136 | + .cfg = &(whal_Stm32f0Spi_Cfg) { |
| 137 | + .pclk = 48000000, |
| 138 | + .timeout = &g_whalTimeout, |
| 139 | + }, |
| 140 | +}; |
| 141 | + |
| 142 | +/* I2C — I2C1 */ |
| 143 | +whal_I2c g_whalI2c = { |
| 144 | + .regmap = { WHAL_STM32F091_I2C1_REGMAP }, |
| 145 | + |
| 146 | + .cfg = &(whal_Stm32f0I2c_Cfg) { |
| 147 | + .pclk = 48000000, |
| 148 | + .timeout = &g_whalTimeout, |
| 149 | + }, |
| 150 | +}; |
| 151 | + |
| 152 | +/* Flash — 256 KB */ |
| 153 | +whal_Flash g_whalFlash = { |
| 154 | + .regmap = { WHAL_STM32F091_FLASH_REGMAP }, |
| 155 | + .driver = WHAL_STM32F091_FLASH_DRIVER, |
| 156 | + |
| 157 | + .cfg = &(whal_Stm32f0Flash_Cfg) { |
| 158 | + .startAddr = 0x08000000, |
| 159 | + .size = 0x40000, |
| 160 | + .timeout = &g_whalTimeout, |
| 161 | + }, |
| 162 | +}; |
| 163 | + |
| 164 | +#ifdef BOARD_WATCHDOG_IWDG |
| 165 | +whal_Watchdog g_whalWatchdog = { |
| 166 | + .regmap = { WHAL_STM32F091_IWDG_REGMAP }, |
| 167 | + .driver = WHAL_STM32F091_IWDG_DRIVER, |
| 168 | + |
| 169 | + .cfg = &(whal_Stm32f0Iwdg_Cfg) { |
| 170 | + .prescaler = WHAL_STM32F0_IWDG_PR_64, |
| 171 | + .reload = 500, |
| 172 | + .timeout = &g_whalTimeout, |
| 173 | + }, |
| 174 | +}; |
| 175 | +#endif |
| 176 | + |
| 177 | +void Board_WaitMs(size_t ms) |
| 178 | +{ |
| 179 | + uint32_t startCount = g_tick; |
| 180 | + while ((g_tick - startCount) < ms) |
| 181 | + ; |
| 182 | +} |
| 183 | + |
| 184 | +whal_Error Board_Init(void) |
| 185 | +{ |
| 186 | + whal_Error err; |
| 187 | + |
| 188 | + /* Set flash latency before increasing clock speed */ |
| 189 | + err = whal_Stm32f0Flash_Ext_SetLatency(&g_whalFlash, |
| 190 | + WHAL_STM32F0_FLASH_LATENCY_1); |
| 191 | + if (err) |
| 192 | + return err; |
| 193 | + |
| 194 | + err = whal_Clock_Init(&g_whalClock); |
| 195 | + if (err) |
| 196 | + return err; |
| 197 | + |
| 198 | + for (size_t i = 0; i < CLOCK_COUNT; i++) { |
| 199 | + err = whal_Clock_Enable(&g_whalClock, &g_clocks[i]); |
| 200 | + if (err) |
| 201 | + return err; |
| 202 | + } |
| 203 | + |
| 204 | + err = whal_Gpio_Init(&g_whalGpio); |
| 205 | + if (err) |
| 206 | + return err; |
| 207 | + |
| 208 | + err = whal_Uart_Init(&g_whalUart); |
| 209 | + if (err) |
| 210 | + return err; |
| 211 | + |
| 212 | + err = whal_Spi_Init(&g_whalSpi); |
| 213 | + if (err) |
| 214 | + return err; |
| 215 | + |
| 216 | + err = whal_I2c_Init(&g_whalI2c); |
| 217 | + if (err) |
| 218 | + return err; |
| 219 | + |
| 220 | + err = whal_Timer_Init(&g_whalTimer); |
| 221 | + if (err) |
| 222 | + return err; |
| 223 | + |
| 224 | + err = whal_Timer_Start(&g_whalTimer); |
| 225 | + if (err) |
| 226 | + return err; |
| 227 | + |
| 228 | + err = Peripheral_Init(); |
| 229 | + if (err) |
| 230 | + return err; |
| 231 | + |
| 232 | + return WHAL_SUCCESS; |
| 233 | +} |
| 234 | + |
| 235 | +whal_Error Board_Deinit(void) |
| 236 | +{ |
| 237 | + whal_Error err; |
| 238 | + |
| 239 | + err = Peripheral_Deinit(); |
| 240 | + if (err) |
| 241 | + return err; |
| 242 | + |
| 243 | + err = whal_Timer_Stop(&g_whalTimer); |
| 244 | + if (err) |
| 245 | + return err; |
| 246 | + |
| 247 | + err = whal_Timer_Deinit(&g_whalTimer); |
| 248 | + if (err) |
| 249 | + return err; |
| 250 | + |
| 251 | + err = whal_Spi_Deinit(&g_whalSpi); |
| 252 | + if (err) |
| 253 | + return err; |
| 254 | + |
| 255 | + err = whal_I2c_Deinit(&g_whalI2c); |
| 256 | + if (err) |
| 257 | + return err; |
| 258 | + |
| 259 | + err = whal_Uart_Deinit(&g_whalUart); |
| 260 | + if (err) |
| 261 | + return err; |
| 262 | + |
| 263 | + err = whal_Gpio_Deinit(&g_whalGpio); |
| 264 | + if (err) |
| 265 | + return err; |
| 266 | + |
| 267 | + for (size_t i = 0; i < CLOCK_COUNT; i++) { |
| 268 | + err = whal_Clock_Disable(&g_whalClock, &g_clocks[i]); |
| 269 | + if (err) |
| 270 | + return err; |
| 271 | + } |
| 272 | + |
| 273 | + err = whal_Clock_Deinit(&g_whalClock); |
| 274 | + if (err) |
| 275 | + return err; |
| 276 | + |
| 277 | + return WHAL_SUCCESS; |
| 278 | +} |
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