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Diffstat (limited to 'src/stm/ao_spi_stm.c')
-rw-r--r--src/stm/ao_spi_stm.c216
1 files changed, 126 insertions, 90 deletions
diff --git a/src/stm/ao_spi_stm.c b/src/stm/ao_spi_stm.c
index ade86a27..56329c24 100644
--- a/src/stm/ao_spi_stm.c
+++ b/src/stm/ao_spi_stm.c
@@ -24,7 +24,7 @@ struct ao_spi_stm_info {
};
static uint8_t ao_spi_mutex[STM_NUM_SPI];
-static uint8_t ao_spi_config[STM_NUM_SPI];
+static uint8_t ao_spi_index[STM_NUM_SPI];
static const struct ao_spi_stm_info ao_spi_stm_info[STM_NUM_SPI] = {
{
@@ -160,6 +160,8 @@ ao_spi_recv(void *block, uint16_t len, uint8_t spi_index)
uint8_t mosi_dma_index = ao_spi_stm_info[AO_SPI_INDEX(spi_index)].mosi_dma_index;
uint8_t miso_dma_index = ao_spi_stm_info[AO_SPI_INDEX(spi_index)].miso_dma_index;
+ spi_dev_null = 0xff;
+
/* Set up transmit DMA to make the SPI hardware actually run */
ao_dma_set_transfer(mosi_dma_index,
&stm_spi->dr,
@@ -267,97 +269,100 @@ ao_spi_duplex(void *out, void *in, uint16_t len, uint8_t spi_index)
ao_dma_done_transfer(miso_dma_index);
}
-void
-ao_spi_get(uint8_t spi_index, uint32_t speed)
+static void
+ao_spi_disable_index(uint8_t spi_index)
{
- struct stm_spi *stm_spi = ao_spi_stm_info[AO_SPI_INDEX(spi_index)].stm_spi;
- uint8_t config = AO_SPI_CONFIG(spi_index);
-
- ao_mutex_get(&ao_spi_mutex[AO_SPI_INDEX(spi_index)]);
- if (config != ao_spi_config[AO_SPI_INDEX(spi_index)]) {
-
- /* Disable current config
- */
- switch (AO_SPI_INDEX(spi_index)) {
- case STM_SPI_INDEX(1):
- switch (ao_spi_config[AO_SPI_INDEX(spi_index)]) {
- case AO_SPI_1_CONFIG_PA5_PA6_PA7:
- stm_gpio_set(&stm_gpioa, 5, 0);
- stm_moder_set(&stm_gpioa, 5, STM_MODER_OUTPUT);
- stm_moder_set(&stm_gpioa, 6, STM_MODER_INPUT);
- stm_moder_set(&stm_gpioa, 7, STM_MODER_OUTPUT);
- break;
- case AO_SPI_1_CONFIG_PB3_PB4_PB5:
- stm_gpio_set(&stm_gpiob, 3, 0);
- stm_moder_set(&stm_gpiob, 3, STM_MODER_OUTPUT);
- stm_moder_set(&stm_gpiob, 4, STM_MODER_INPUT);
- stm_moder_set(&stm_gpiob, 5, STM_MODER_OUTPUT);
- break;
- case AO_SPI_1_CONFIG_PE13_PE14_PE15:
- stm_gpio_set(&stm_gpioe, 13, 0);
- stm_moder_set(&stm_gpioe, 13, STM_MODER_OUTPUT);
- stm_moder_set(&stm_gpioe, 14, STM_MODER_INPUT);
- stm_moder_set(&stm_gpioe, 15, STM_MODER_OUTPUT);
- break;
- }
+ /* Disable current config
+ */
+ switch (AO_SPI_INDEX(spi_index)) {
+ case STM_SPI_INDEX(1):
+ switch (spi_index) {
+ case AO_SPI_1_PA5_PA6_PA7:
+ stm_gpio_set(&stm_gpioa, 5, 1);
+ stm_moder_set(&stm_gpioa, 5, STM_MODER_OUTPUT);
+ stm_moder_set(&stm_gpioa, 6, STM_MODER_INPUT);
+ stm_moder_set(&stm_gpioa, 7, STM_MODER_OUTPUT);
+ break;
+ case AO_SPI_1_PB3_PB4_PB5:
+ stm_gpio_set(&stm_gpiob, 3, 1);
+ stm_moder_set(&stm_gpiob, 3, STM_MODER_OUTPUT);
+ stm_moder_set(&stm_gpiob, 4, STM_MODER_INPUT);
+ stm_moder_set(&stm_gpiob, 5, STM_MODER_OUTPUT);
+ break;
+ case AO_SPI_1_PE13_PE14_PE15:
+ stm_gpio_set(&stm_gpioe, 13, 1);
+ stm_moder_set(&stm_gpioe, 13, STM_MODER_OUTPUT);
+ stm_moder_set(&stm_gpioe, 14, STM_MODER_INPUT);
+ stm_moder_set(&stm_gpioe, 15, STM_MODER_OUTPUT);
break;
- case STM_SPI_INDEX(2):
- switch (ao_spi_config[AO_SPI_INDEX(spi_index)]) {
- case AO_SPI_2_CONFIG_PB13_PB14_PB15:
- stm_gpio_set(&stm_gpiob, 13, 0);
- stm_moder_set(&stm_gpiob, 13, STM_MODER_OUTPUT);
- stm_moder_set(&stm_gpiob, 14, STM_MODER_INPUT);
- stm_moder_set(&stm_gpiob, 15, STM_MODER_OUTPUT);
- break;
- case AO_SPI_2_CONFIG_PD1_PD3_PD4:
- stm_gpio_set(&stm_gpiod, 1, 0);
- stm_moder_set(&stm_gpiod, 1, STM_MODER_OUTPUT);
- stm_moder_set(&stm_gpiod, 3, STM_MODER_INPUT);
- stm_moder_set(&stm_gpiod, 4, STM_MODER_OUTPUT);
- break;
- }
+ }
+ break;
+ case STM_SPI_INDEX(2):
+ switch (spi_index) {
+ case AO_SPI_2_PB13_PB14_PB15:
+ stm_gpio_set(&stm_gpiob, 13, 1);
+ stm_moder_set(&stm_gpiob, 13, STM_MODER_OUTPUT);
+ stm_moder_set(&stm_gpiob, 14, STM_MODER_INPUT);
+ stm_moder_set(&stm_gpiob, 15, STM_MODER_OUTPUT);
+ break;
+ case AO_SPI_2_PD1_PD3_PD4:
+ stm_gpio_set(&stm_gpiod, 1, 1);
+ stm_moder_set(&stm_gpiod, 1, STM_MODER_OUTPUT);
+ stm_moder_set(&stm_gpiod, 3, STM_MODER_INPUT);
+ stm_moder_set(&stm_gpiod, 4, STM_MODER_OUTPUT);
break;
}
+ break;
+ }
+}
- /* Enable new config
- */
- switch (AO_SPI_INDEX(spi_index)) {
- case 0:
- switch (AO_SPI_CONFIG(spi_index)) {
- case AO_SPI_1_CONFIG_PA5_PA6_PA7:
- stm_afr_set(&stm_gpioa, 5, STM_AFR_AF5);
- stm_afr_set(&stm_gpioa, 6, STM_AFR_AF5);
- stm_afr_set(&stm_gpioa, 7, STM_AFR_AF5);
- break;
- case AO_SPI_1_CONFIG_PB3_PB4_PB5:
- stm_afr_set(&stm_gpiob, 3, STM_AFR_AF5);
- stm_afr_set(&stm_gpiob, 4, STM_AFR_AF5);
- stm_afr_set(&stm_gpiob, 5, STM_AFR_AF5);
- break;
- case AO_SPI_1_CONFIG_PE13_PE14_PE15:
- stm_afr_set(&stm_gpioe, 13, STM_AFR_AF5);
- stm_afr_set(&stm_gpioe, 14, STM_AFR_AF5);
- stm_afr_set(&stm_gpioe, 15, STM_AFR_AF5);
- break;
- }
+static void
+ao_spi_enable_index(uint8_t spi_index)
+{
+ switch (AO_SPI_INDEX(spi_index)) {
+ case STM_SPI_INDEX(1):
+ switch (spi_index) {
+ case AO_SPI_1_PA5_PA6_PA7:
+ stm_afr_set(&stm_gpioa, 5, STM_AFR_AF5);
+ stm_afr_set(&stm_gpioa, 6, STM_AFR_AF5);
+ stm_afr_set(&stm_gpioa, 7, STM_AFR_AF5);
break;
- case 1:
- switch (AO_SPI_CONFIG(spi_index)) {
- case AO_SPI_2_CONFIG_PB13_PB14_PB15:
- stm_afr_set(&stm_gpiob, 13, STM_AFR_AF5);
- stm_afr_set(&stm_gpiob, 14, STM_AFR_AF5);
- stm_afr_set(&stm_gpiob, 15, STM_AFR_AF5);
- break;
- case AO_SPI_2_CONFIG_PD1_PD3_PD4:
- stm_afr_set(&stm_gpiod, 1, STM_AFR_AF5);
- stm_afr_set(&stm_gpiod, 3, STM_AFR_AF5);
- stm_afr_set(&stm_gpiod, 4, STM_AFR_AF5);
- break;
- }
+ case AO_SPI_1_PB3_PB4_PB5:
+ stm_afr_set(&stm_gpiob, 3, STM_AFR_AF5);
+ stm_afr_set(&stm_gpiob, 4, STM_AFR_AF5);
+ stm_afr_set(&stm_gpiob, 5, STM_AFR_AF5);
+ break;
+ case AO_SPI_1_PE13_PE14_PE15:
+ stm_afr_set(&stm_gpioe, 13, STM_AFR_AF5);
+ stm_afr_set(&stm_gpioe, 14, STM_AFR_AF5);
+ stm_afr_set(&stm_gpioe, 15, STM_AFR_AF5);
break;
}
- ao_spi_config[AO_SPI_INDEX(spi_index)] = AO_SPI_CONFIG(spi_index);
+ break;
+ case STM_SPI_INDEX(2):
+ switch (spi_index) {
+ case AO_SPI_2_PB13_PB14_PB15:
+ stm_afr_set(&stm_gpiob, 13, STM_AFR_AF5);
+ stm_afr_set(&stm_gpiob, 14, STM_AFR_AF5);
+ stm_afr_set(&stm_gpiob, 15, STM_AFR_AF5);
+ break;
+ case AO_SPI_2_PD1_PD3_PD4:
+ stm_afr_set(&stm_gpiod, 1, STM_AFR_AF5);
+ stm_afr_set(&stm_gpiod, 3, STM_AFR_AF5);
+ stm_afr_set(&stm_gpiod, 4, STM_AFR_AF5);
+ break;
+ }
+ break;
}
+}
+
+void
+ao_spi_get(uint8_t spi_index, uint32_t speed)
+{
+ uint8_t id = AO_SPI_INDEX(spi_index);
+ struct stm_spi *stm_spi = ao_spi_stm_info[id].stm_spi;
+
+ ao_mutex_get(&ao_spi_mutex[id]);
stm_spi->cr1 = ((0 << STM_SPI_CR1_BIDIMODE) | /* Three wire mode */
(0 << STM_SPI_CR1_BIDIOE) |
(0 << STM_SPI_CR1_CRCEN) | /* CRC disabled */
@@ -372,21 +377,39 @@ ao_spi_get(uint8_t spi_index, uint32_t speed)
(1 << STM_SPI_CR1_MSTR) |
(0 << STM_SPI_CR1_CPOL) | /* Format 0 */
(0 << STM_SPI_CR1_CPHA));
+ if (spi_index != ao_spi_index[id]) {
+
+ /* Disable old config
+ */
+ ao_spi_disable_index(ao_spi_index[id]);
+
+ /* Enable new config
+ */
+ ao_spi_enable_index(spi_index);
+
+ /* Remember current config
+ */
+ ao_spi_index[id] = spi_index;
+ }
}
void
ao_spi_put(uint8_t spi_index)
{
- struct stm_spi *stm_spi = ao_spi_stm_info[AO_SPI_INDEX(spi_index)].stm_spi;
+ uint8_t id = AO_SPI_INDEX(spi_index);
+ struct stm_spi *stm_spi = ao_spi_stm_info[id].stm_spi;
stm_spi->cr1 = 0;
- ao_mutex_put(&ao_spi_mutex[AO_SPI_INDEX(spi_index)]);
+ ao_mutex_put(&ao_spi_mutex[id]);
}
static void
ao_spi_channel_init(uint8_t spi_index)
{
- struct stm_spi *stm_spi = ao_spi_stm_info[AO_SPI_INDEX(spi_index)].stm_spi;
+ uint8_t id = AO_SPI_INDEX(spi_index);
+ struct stm_spi *stm_spi = ao_spi_stm_info[id].stm_spi;
+
+ ao_spi_disable_index(spi_index);
stm_spi->cr1 = 0;
(void) stm_spi->sr;
@@ -404,29 +427,42 @@ ao_spi_init(void)
#if HAS_SPI_1
# if SPI_1_PA5_PA6_PA7
stm_rcc.ahbenr |= (1 << STM_RCC_AHBENR_GPIOAEN);
+ stm_ospeedr_set(&stm_gpioa, 5, SPI_1_OSPEEDR);
+ stm_ospeedr_set(&stm_gpioa, 6, SPI_1_OSPEEDR);
+ stm_ospeedr_set(&stm_gpioa, 7, SPI_1_OSPEEDR);
# endif
# if SPI_1_PB3_PB4_PB5
stm_rcc.ahbenr |= (1 << STM_RCC_AHBENR_GPIOBEN);
+ stm_ospeedr_set(&stm_gpiob, 3, SPI_1_OSPEEDR);
+ stm_ospeedr_set(&stm_gpiob, 4, SPI_1_OSPEEDR);
+ stm_ospeedr_set(&stm_gpiob, 5, SPI_1_OSPEEDR);
# endif
# if SPI_1_PE13_PE14_PE15
stm_rcc.ahbenr |= (1 << STM_RCC_AHBENR_GPIOEEN);
+ stm_ospeedr_set(&stm_gpioe, 13, SPI_1_OSPEEDR);
+ stm_ospeedr_set(&stm_gpioe, 14, SPI_1_OSPEEDR);
+ stm_ospeedr_set(&stm_gpioe, 15, SPI_1_OSPEEDR);
# endif
stm_rcc.apb2enr |= (1 << STM_RCC_APB2ENR_SPI1EN);
- ao_spi_config[0] = AO_SPI_CONFIG_NONE;
+ ao_spi_index[0] = AO_SPI_CONFIG_NONE;
ao_spi_channel_init(0);
#endif
#if HAS_SPI_2
# if SPI_2_PB13_PB14_PB15
stm_rcc.ahbenr |= (1 << STM_RCC_AHBENR_GPIOBEN);
+ stm_ospeedr_set(&stm_gpiob, 13, SPI_2_OSPEEDR);
+ stm_ospeedr_set(&stm_gpiob, 14, SPI_2_OSPEEDR);
+ stm_ospeedr_set(&stm_gpiob, 15, SPI_2_OSPEEDR);
# endif
# if SPI_2_PD1_PD3_PD4
stm_rcc.ahbenr |= (1 << STM_RCC_AHBENR_GPIODEN);
+ stm_ospeedr_set(&stm_gpiod, 1, SPI_2_OSPEEDR);
+ stm_ospeedr_set(&stm_gpiod, 3, SPI_2_OSPEEDR);
+ stm_ospeedr_set(&stm_gpiod, 4, SPI_2_OSPEEDR);
# endif
-
stm_rcc.apb1enr |= (1 << STM_RCC_APB1ENR_SPI2EN);
- ao_spi_config[1] = AO_SPI_CONFIG_NONE;
-
+ ao_spi_index[1] = AO_SPI_CONFIG_NONE;
ao_spi_channel_init(1);
#endif
}
generated by cgit v1.2.3 (git 2.39.1) at 2025-11-04 02:00:08 +0000