eddy/stm32samples
1
0
Fork 0
mirror of https://github.com/eddyem/stm32samples.git synced 2026-05-09 14:26:53 +03:00
Code Issues Packages Projects Releases Wiki Activity

seems like it works; later TODO: add USART for RS232

Browse Source
This commit is contained in:
Edward Emelianov
2026-04-14 23:42:52 +03:00
parent c93c2ac6ab
commit 40c8f23e36
15 changed files with 455 additions and 78 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
F1:F103/AS3935-lightning/spi.c
View File

@@ -26,6 +26,7 @@
static const uint32_t SPI_CR1 = SPI_CR1_MSTR | SPI_CR1_BR_2 | SPI_CR1_BR_0 | SPI_CR1_SSM | SPI_CR1_SSI | SPI_CR1_CPHA /* | SPI_CR1_CPOL*/;
spiStatus SPI_status = SPI_NOTREADY;
uint8_t as3935_channel = 0;
void spi_setup(){
// master, no slave select, BR=F/16, CPOL/CPHA - polarity.
@@ -46,6 +47,7 @@ volatile uint32_t wctr;
uint8_t SPI_transmit(uint8_t *buf, uint8_t len){
if(!buf || !len) return 0; // bad data format
if(SPI_status != SPI_READY) return 0; // spi not ready to transmit data
CS(as3935_channel);
for(uint8_t x = 0; x < len; ++x){
WAITX(!(SPI1->SR & SPI_SR_TXE));
SPI1->DR = buf[x];
@@ -53,6 +55,7 @@ uint8_t SPI_transmit(uint8_t *buf, uint8_t len){
WAITX(!(SPI1->SR & SPI_SR_RXNE));
buf[x] = SPI1->DR;
}
CS_OFF();
return len;
}